Before you Build | Getting Started

Planning to build with reclaimed wood but still need more information?
Here are 5 steps from choosing wood to production

 
  • TO RECLAIM OR NOT?

Get clear on whether you want to use reclaimed timber or just timber.

Reclaimed wood isn't as convenient to buy as warped wood, but then again nothing matches reclaimed wood's uniqueness and character. Being reclaimed, our wood is a unique product full of character and "imperfections" that adds to the flavour and richness of any building. Each installation holds a history, and being a natural product, will vary in grain, texture and coloring. Our wood is salvaged from misused structures, so expect it to contain bolt holes, seasoning checks, patina and natural erosion which enhances the natural beauty of the wood.

If you are looking for a uniform product devoid of unique characteristics, you are probably not looking for reclaimed timber. Likewise, if budget is you highest priority this also isn't for you as reclaimed timber is generally more expensive.

However, if you want to build a structure that will last and will not need to be replaced for many years due to rot or termites, then Kaltimber's reclaimed woods can save you money in the long term.

Think of it as an investment!

Now that you have decided to use reclaimed wood, let’s have a look at the products themselves.

  • PRODUCT DESCRIPTIONS & SPECIFICATIONS

Decide on specific products and what do you need them for.

Do you want to build your whole house out of reclaimed timber? Do you just want certain elements such as the floor, deck, posts?

Feel free to visit our products section from the main navigation to get a better idea of what standard products we carry and contact us for any additional questions.

Get a bill of materials from your architect/contractor which outlines the dimensions and specifications for each product you require and send us an e-mail.

Now that you have a clear idea of what you are looking for and an approximate quantities and dimensions it’s time to meet!

  • INITIAL CONSULTATION

Come and meet with us for an initial consultation along with your project team. In this meeting we will discuss the look and feel your project is aiming for, the timing, as well as the specifics of each product, including timber qualities, application, finish, dimensions and quantities.

We will try to match our product to your specifications to reduce waste in-line with your engineer's structural specifications.

This meeting will take place at Kaltimber's office/showroom, where standard samples are available to view or for purchase.

Now that you have provided us with specifications we can prepare your quote.

  • QUOTE

Kaltimber quote will be based on the specifications you provided, according to what was discussed as well as what we have in stock.

This quote includes: dimensions, specifications, finishing, payment terms and other policies and the price.

Now that everything is clear on your quote, it is time to produce!

  • PRODUCTION

Once we receive the signed invoice with a 60% deposit, we will begin to process your order according to factory schedule. We only keep a limited quantity of ready to use stock on our shelves. Most of our products are made to order and require some degree of processing. Production times are dependent on each order and will be discussed at the quote stage.

All the production is made in house as we own all the machinery needed. We do not use third party therefor control all the production and can ensure consistent quality.

Rustic natural top face decking reclaimed from a building in East Kalimantan

 

Top 10 questions to ask

when buying wood flooring

  1. Which type of wood floor is right for me, solid or engineered?

That depends on where you want to install it. Both solid and engineered wood floors are made using real wood, so both are environmentally friendly. 

Solid wood flooring is exactly what the name implies: a solid piece of wood from top to bottom. The thickness of solid wood flooring can vary, but generally ranges from 1.8cm to 2.2cm. Solid wood can be used in any room that is above grade (above ground). One of the many benefits of solid wood flooring is that it can be sanded and refinished many times.  Solid wood floors are ideal in family/living rooms, dining rooms, bedrooms, and even kitchens and powder rooms. About the only place you can’t use solid wood flooring is in the basement, but there’s a solution for that area too. 

Engineered wood floors are real wood floors that are manufactured using multiple layers of wood veneers.  The layers that you can’t see can be of the same species, or of different species. The grain of each layer runs in perpendicular directions, which makes it very dimensionally stable. This means that the wood will expand and contract less than solid wood flooring during fluctuations in humidity and temperature.

Engineered floors can be nailed or stapled to a wood subfloor, or glued down to a wood or concrete subfloor. This makes engineered wood floors ideal for slab and basement installations, but they can be used in any room above, on or below grade. While this type of flooring can be sanded and refinished, it cannot be done as many times as solid wood flooring.

 

2. Which wood species is right for me?

Choosing the right species of wood flooring for you is strictly a matter of your style, budget and personal preference.

Do you like light woods like teak? These species generally make a room appear more open and airy.

Do you like medium woods like bangkirai? These species generally make a room appear more warm and cozy.

Do you like darker woods like ulin? These species generally make a room appear more stately and refined.

Finishing can offer even more color options.

Once you decide on a look, you should consider how your floors will be used. Are you a retired couple living alone, or a busy family with young children and pets? Each wood species is rated for its hardness and durability using something called a Janka scale (the Janka scale gives a good indication of how likely a wood is to dent or show other wear).

 

3. Is a factory-finished floor or a site-finished floor better for me?

Each method has its own benefits and advantages, and choosing the right method will depend on the level of customization you want to achieve, and your personal preference.  

A job-site finish is one that applied on the job site, in the room where the flooring is being installed. With a job-site finished floor, you can choose the type of finish to be applied to your floor, which will impact maintenance, as well as the stain, if any, and sheen of the final product. In other words, a job-site finished wood floor offers you unlimited possibilities for customizing the final appearance of your floor.

However, because your floors will be sanded and finished in your home, you should expect noise, dust, and some disruption to your home. In the past few years, many dust containment systems have been developed to help control dust and debris, so be sure to ask your contractor if one can be used for your installation. You also will need to allow time for the finish to dry on-site, during which time you will not be able to walk on your floor.  

With factory-finished wood floors, the finish is applied at the factory, long before it reaches your home. While many options are available with factory finished floors, you will not be able to achieve the same level of customization as you can with job-site finished wood floors.

A major benefit of factory finished floors, however, is that there is minimal dust and noise during the installation process. You also will be able to walk on your floors immediately after they are installed.

 

4. My room is 40 square meters, but we’re being told to order 44 square meters of flooring.  Is this really necessary?

Yes. As a general rule, you should plan to order 10% more flooring than is needed for the installation.  Much of the material will be cut to fit the exact space, and once the boards are cut, they likely cannot be used elsewhere in the room because the end tongue or groove will have been removed. Once that happens, that board can no longer adjoin with another board, so there is some waste involved.  

You may need to order slightly more or less depending on the room. For example, if you need to work around stairs, a bay window, a fireplace, and a closet, you may need to have more than 10%, but if the room is square with no interruptions, less than 10% may work. Your contractor is your best resource for helping you estimate the material that will be needed to complete the job.

Feel free to contact us to get in touch with a professional installer.

5. I’ve seen different finish sheens on wood floors; some are shiny and some are not.  Which is better?

It really is a matter of preference. If you choose to install a site-finished floor, you can choose any sheen that you like. Gloss finishes offer the most shine, and will reflect the most light. Semi-gloss finishes offer some shine, and will reflect some light. Satin or matte finishes offer the least shine, and will reflect the least light.

Generally speaking, the less sheen, the less you will notice small scratches and other wear that is normal with wood floors. If you choose to install a factory-finished floor, you will be limited to the sheen available for the material you select. All sheens will offer the same protection for your floor, so it truly is a matter of which look you like best.

 

   6. I’m concerned about pets scratching my floors.  Is there anything I can do to prevent this?

There are several things you can do to minimize scratches from pets on your wood floors. Place scatter rugs at all doors to minimize the amount of dirt and grit being tracked in, especially if your pet likes to dig. Your best defense, however, is to trim your pet’s nails regularly. If scratches occur, as they might whether pets live in the home or not, keep in mind that the scratches most likely will be in the finish only, and not in the wood. If this situation occurs, consult with a professional wood flooring contractor for specific recommendations about how to repair the scratches, and minimize them in the future.

Feel free to contact us for any further questions.

 

7. How do I keep my floors looking new?

All hardwood floors should be cleaned regularly. To accomplish that, simply sweep, dust mop or vacuum the floors with the beater bar turned off to remove dirt and grit from between the floor boards.  

Avoid using a wet mop or steam mop on hardwood floors as water and steam can dull the finish, or even damage the wood over long periods of time.

Place throw rugs at all entrances, avoiding those with rubber backs, which can discolor wood floors.

Special rug mats can be purchased from a wood flooring retailer that will protect the floors from discoloration. Throw rugs will help keep outside dirt and other debris from scratching the floors. Scratches also can be prevented by placing floor protector pads on the bottoms of the legs of any furniture that comes into direct contact with the floors.  

When spills occur, be sure to clean them immediately with a dry or slightly damp cloth. Allowing spills to remain on the wood floors could damage the finish, and possibly the wood. Avoid walking on the floors with sports cleats or high heel shoes that are in disrepair. These can scratch the finish, or even dent the floor. 

Finally, when the floor begins to look a little dull, use a wood flooring cleaner recommended by your installer to renew the luster. Be sure to use the product as directed, and use only products that are compatible with your wood floor as using the wrong type of cleaning product could damage the finish, and possibly damage the wood as well.

 

8. How long after I order my floors will it take before they are installed?

That depends. Site-finished floors will take longer to install than factory-finished floors since the finish needs to be applied, and dry, on site. 

Depending on the type of finish used, you can expect that there will be multiple coats applied, and that each coat will need to be sanded before the next coat is applied, and also will need to dry thoroughly before the floor can be walked on. In addition, all wood flooring, whether job-site finished or factory-finished, will need to be delivered to the job site and allowed to acclimate for a period of time before the installation can begin. This can take several days depending on the material being used.

This is a very important part of the installation process because the wood must reach equilibrium moisture content (EMC) with the job site conditions to ensure a long-lasting, high-quality installation.

 

9. I’ve seen instances where wood floors fade over time.  Is there anything I can do to prevent this?

Wood floors are one of the few flooring options that become more beautiful with age. Like all natural things that experience change over time, wood floors will experience subtle color changes as they age. This is a natural process that will add to the beauty and character of the floor.

Different species of wood flooring will experience color changes at different rates. These changes are natural, but can be minimized with a little prevention. 

Two factors influence color changes in wood floors: sun exposure and the finish that is applied to the floor.  Over time, prolonged sun exposure will cause wood floors to change color. Think about how skin reacts when exposed to sunlight. Wood reacts in much the same way, and you can minimize this effect by periodically moving rugs and furniture to limit that exposure.

The second factor that can cause wood floors to change color over time is the finish used. Oil-modified finishes will amber over time, giving the floor a slightly yellow appearance. In contrast, water-based finishes generally will remain clear over time, minimizing long-term color changes.

 

10. Installation is so expensive.  Why can’t I just do it myself?

Installing wood floors is a lot more complicated than painting your walls or replacing the hardware on your kitchen cabinets!

First of all, you will be spending several thousand dollars on material alone, so if you damage it, it’s not as easy as buying another $30 gallon of paint or $200 of hardware and starting over again. Plus, wood flooring requires special tools that you will likely have to rent and will have little experience using.  

More importantly, however, you will need to make sure the room you’re working in is flat, that the subfloor material will work for wood flooring, and that no moisture issues are present that will damage the wood long-term. Testing for moisture requires special tools as well, and you must test both the subfloor and the flooring to ensure a successful installation.

In addition, you will need to know how to center the room, how much space should be left for expansion gaps, how to work around obstructions like closets, fireplaces, bay windows, staircases, and cabinets, and if you make cutting mistakes, you may end up running short on your material and not have enough to finish the job.

In some cases, you may not be able to exactly match the lot, much like running short of paint sometimes results in a slight color difference when mixing a new gallon.

The bottom line is that installing wood floors is not recommended as a DIY project.  In the long run, you will save money and time by using a professional.

Feel free to contact to get in touch with a professional installer.

 

Frequently Asked Questions

Comprehensive Wood Flooring & Decking FAQ

Find below some of the most often asked questions and answers. If you can't find the answer of your specific questions here please contact us either using the online form at the bottom of this page or send us an email on info@kaltimber.com, you can also give us a call in our office number at (+62) 361 975 219 or reach us by whatsapp at (+62) 878 6020 4246 from Monday to Friday 8.30-16.30h. We will gladly answer all of your questions.

Understanding the Basics

  • An outdoor platform structure typically made from timber, used for leisure and functional purposes.

  • Extends living space outdoors, perfect for entertaining, relaxing, or dining.

  • For outdoor living space, aesthetic appeal, and increased property value.

  • No, a deck is raised and built from wood/composites, while a patio is ground-level and usually stone/concrete.

  • Suitable for backyards, front yards, rooftops, and balconies.

  • Yes, suits most home types (modern, traditional, tropical).

  • Timber surface, support frame, and optional railings/coverings.

Materials & Types of Wood

  • Ulin (ironwood), teak, cedar, pine, ipe, and other tropical/reclaimed hardwoods.

  • Reclaimed ironwood (Ulin) - naturally weather/insect resistant and sustainable!

    • Pressure-treated: Chemically treated

    • Hardwood: Dense/durable

    • Softwood: More affordable

    • Composite: Wood-plastic blend

  • Excellent - adds unique character and eco-friendly appeal.

  • More stable (seasoned over time), sustainable, and one-of-a-kind.

  • Yes, we use responsibly salvaged materials with no deforestation.

  • High-quality woods resist these issues with minimal yet proper maintenance.

  • Often longer than new wood - already "seasoned" for decades. Ultimately it will depend on the wood itself. Our reclaimed Ulin ironwood is rated 50+years.

Wood Floor Installation

  • Unload in dry weather, avoid rain. Leave wrapped to acclimate for 2-3 days up to 2 weeks.

  • Solid hardwood isn't ideal for basements; use engineered wood below grade.

  • Yes, if linoleum is tightly glued to the subfloor.

  • Yes, but may be slippery - consider household (kids/pets).

  • Depends on product/subfloor: nail-down, glue-down, or floating.

  • Laid over underlay without subfloor attachment (not ideal for solid wood).

    • Glued: 15mm

    • Floating: 5mm per meter width + 15mm lengthwise

  • 7-10% for cutting/imperfections.

  • Yes - light woods darken; dark woods darken further.

Parquet Flooring

  • Natural, durable, renewable, hypoallergenic, and stylish.

  • Absolutely - works beautifully with custom patterns.

  • No - we create custom designs for any space. Our only limitation is the reclaimed nature of the wood, we have to adapt sizes to what’s available.

  • Yes - we tailor finishes/colors for perfect blending without a certain range.

Deck Construction & Installation

  • Yes with proper tools, but complex designs need professionals.

  • Saw, drill, measuring tape, level, screws, and safety gear.

  • Plan → Measure → Frame → Secure boards → Finish (seal/stain).

  • No - we can level with posts/supports.

  • Typically 3-7 days depending on size.

  • Usually yes. You need to contact your local authorities or ask your contractor.

Maintenance & Care

  • Annual cleaning + resealing recommended. If you go with reclaimed Ulin ironwood none of the above are necessary.

  • Broom + mild cleaner; avoid pressure washers.

  • Keep dry and use mold-resistant sealers.

  • Fill with wood filler; replace damaged boards. Hairline cracks are normal.

  • Yes - sanding and refinishing can restore beauty. It can also damage the wood if not properly done.

Sustainability

  • Extremely - reduces landfill waste and deforestation.

  • Yes - we specialize in salvaging/refurbishing.

  • Minimal - we use eco-friendly finishes and practices.

Raw boards – Square edges – Semi process - Full process

What are the differences?

  • This is the raw material, board, as we reclaim it from our Kalimantan dismantling. Most of the boards still have nail, surface cracks, end split and are often a little muddy.

    It is in general 2.3cm thick, 17 to 19cm wide and 380 to 400cm long.

  • We take raw board on top of the stock pile and process it. It is going once in our double planner to reach a fix thickness then process it once on our single rip to get straight square edge.

    Top face can be left rustic (natural) or smooth (double planner process).

    Nail holes, surface cracks and end split are left untouched.

    Board is always washed with high pressure water to clean it on its rustic form.

    It is in general 2cm thick, 17cm wide and 380 to 400cm long. Other sizes available.

  • We take raw board on top of the stock pile and process it such as square edge above and in addition it goes through our molding to put a profile on.

    Top face can be left rustic (natural) or smooth (double planner process).

    Nail holes, surface cracks and end split are left untouched.

    Board is always washed with high pressure water to clean it on its rustic form.

    Due to the texture of Ulin in its raw form we do not recommend using rustic for semi-process decking.

    It is in general 2cm thick, 15cm wide and 380 to 400cm long. Other sizes available.

  • We select each board to perfectly match the end product. It is going through the whole production process from double planner to final touch made by the hand of skillful carpenter.

    Nail holes are either glued or plugged, surface crack is glued, end split is either cut off or glue back, top face is fully sanded to minimum 120 grit for the smooth option, or wire brushed for the rustic option.

    Sizes are detailed in our catalogs.

 

Any unanswered question?
Please complete the form below

 

Kaltimber's Cost Estimator: Calculate Your Project Costs Easily

Welcome to Kaltimber's Cost Estimator!
Use this tool to get a quick estimate of your project costs based on the product type and quantity you need. Follow the simple steps below to calculate your costs.

How to Use Our Cost Estimator

  1. Select Product Type: Choose from our range of products such as decking, flooring or ceiling.

  2. Choose Finishing Type: Select the finishing type that is associated with a specific size (in cm) for your chosen product.

  3. Enter Quantity: Input the number of square meters you wish to order.

  4. Calculate Price: Click on the "Calculate Price" button to see the estimated cost of your order.

Example: If you need 20 square meters of decking with a smooth finish, select "Decking" as the product type, "Smooth Finish" as the finishing type, at this stage you also need to make sure you select the processing (Full or Semi) and the proper sizes displayed by order of thickness and width, enter "20" for the quantity, and click "Calculate Price."

Important Notes

  • Unavailable Variations: If the calculator shows a result of Rp.0, it indicates that the selected variation is currently unavailable.

  • More Information: For detailed information on finishing types, please visit the specific product page catalogue or see the shop page.

  • Additional Products: Other types of products, such as panelling and duckboard, are not included in the price calculator.

  • Reach Out for More Options: For additional options and customizations, please contact our sales representatives via whatsApp or email. We're here to help!

  • Indicative Pricing: Please note that the prices provided by the calculator are indicative only. Final prices may vary based on specific order details and custom requirements.

We aim to provide you with the best service and quality products. For any questions or further assistance, do not hesitate to get in touch with us.

Calculate Your Price

Total Price: Rp.0

Biji Begawan project featuring stunning Kaltimber recycled ironwood built by Global Wood Tech

Instruction Manual

See the instruction manual for comprehensive, step-by-step instructions on how to use and take care of our products. Our handbook guarantees you get the most out of your investment by guiding you through proper care and handling practices, whether you're installing new pieces or maintaining existing ones.

What will you find in our manual?

Responsibility

  1. Installer & Owner responsibilities

  2. Product quality inspection guidelines

  3. Color matching considerations

Transport & Storage

  1. Guidelines for transporting from port to destination

  2. Proper storage techniques

Job Site Conditions

  1. Acclimatization and room atmosphere recommendations

  2. Managing EMC (Equilibrium Moisture Content) levels

Installation interior

  1. Support requirements during installation

  2. Wood preparation tips

  3. Expansion space guidelines

  4. Underfloor heating considerations

Installation Exterior

  1. Support requirements for exterior installations

  2. Preparing wood for outdoor use

  3. Expansion space requirements

Finishing

  1. Choosing between oiling, varnish, lacquer, or sealant

  2. Finishing guidelines for interior applications

  3. Finishing guidelines for exterior applications

Care & Maintenance

  1. Tips for ongoing care

  2. Recommended maintenance practices

Feel free to have a look at Limited Warranty page for further information.

 

Our reclaim Ulin ironwood and hardwood

Kaltimber provide a certified 100% recycled Ulin ironwood supply to every single wood lover.

We are carefully reclaiming from disused structures and work in close relation with the Forest Ministry to ensure a fully legal wood supply ready for local sale as well as export.

With extremely competitive price Kaltimber is making sure no wood lover is left behind, from small private project to hotels and nationwide distributors.

 
Ulin decking smooth natural finish

Ulin decking smooth natural finish

Our specialty, Ulin Kalimantan!

We are specialized in reclaiming ironwood from Kalimantan. All our wood comes from legal and verified sources, and we transform it, for the most part, into decking and flooring.

More information can be found in the categories Decking and/or Flooring.

More about Ulin

Ulin is a remarkable wood. It's extremely slow growth rate at less than 0.5mm a year results in a highly dense wood ideal for exterior applications. Ulin is a rare tree native to Indonesia. It is threatened by habitat loss.

The government of Indonesia and the state government of Sarawak have formally banned the export of this species. Illegal smuggling continues to be a major problem. It grows in lowland primary and secondary forest up to 625m altitude. It is commonly found along rivers and adjacent hills. It requires an average annual rainfall of 2500–4000 mm.

This very important tree is one of the most durable and heaviest timbers in the world. Ulin trees can grow to attain over 1,000 years of age. Common commercially exploitable trees attain a height of 30 or more metres (100 ft) with trunk diameters of exploitable trees up to 92 cm (36 inches).

Trade & local names: Borneo ironwood, billion, belian, biliran, Kalimantan ironwood

Found in: Indonesia, East Malaysia, Philippines

Qualities: Growth ring boundaries indistinct or absent. Heartwood basically brown to yellow, without streaks. Sapwood colour distinct from heartwood colour. Odor has faint lemon scent. Heartwood with yellowish to greenish (olive) hues when fresh, dark brown to almost black upon exposure.

Density: 0.85–1.1 g/cm³

Durability: Class 1

Uses: Heavy engineering, ulin ironwood decking. Due to the excellent resistance to bacterial, fungal, insect and marine borer attack the wood is highly prized for many outdoor uses. Internationally, it is renowned for heavy construction such as a buffer between transportation trailers and heavy steel fabrications (such as boilers, pressure vessels, reactors and many others). It is also frequently found in dry docks as a timber to separate the hull of ships from the steel supporting stands. Can be used on exposed flooring.

Status: Listed as vulnerable by the IUCN (World Conservation Union). The species is threatened by over-exploitation, predominantly by illegal loggers. Current demand for the timber is fueled for its esteem among Chinese as a coffin wood (as it is resistant to insect and rot). Included in list of vanishing timber species of the Philippines and considered almost extinct in Sabah. In Java and Sumatra it exists solely in National Parks. Currently the situation is assessed as a serious depletion of stands.

Teak flooring wirebrushed

Teak flooring wirebrushed

Reclaimed Hardwoods from Kitaru Lumberyard


Located just a short distance from our main site in Bali, our trusted partner, Kitaru Lumberyard, specializes in reclaiming premium tropical hardwoods from East Kalimantan and Central Java. All wood is legally sourced, verified, and expertly repurposed for sustainable use in decking, flooring, cladding, and bespoke joinery projects.

More about our wood species

Teak (Tectona grandis)

Teak is a legendary hardwood prized for its golden-brown hue, high oil content, and unmatched durability. Naturally resistant to water, termites, and decay, it’s a preferred choice for marine applications, outdoor furniture, and luxury architecture. Over time, untreated teak develops a graceful silver-grey patina. Native to Southeast Asia, teak remains a sustainable option thanks to regulated plantations in Indonesia and beyond.

Bangkirai (Shorea laevis)

Also known as Yellow Balau, Bangkirai is a dense, heavy-duty hardwood ideal for outdoor use. Its natural resistance to rot, fungi, and pests makes it perfect for decking, docks, and high-traffic exterior spaces. With a golden to deep honey tone, Bangkirai brings both strength and beauty to any project, aging into a weathered grey without compromising structural integrity.

Kapur (Dryobalanops lanceolata)

Kapur is a reddish-brown hardwood known for its strength, termite resistance, and versatility. Often used in both structural and decorative applications, it's ideal for roofing frameworks, exterior cladding, and interior flooring. Its balanced density makes it easy to work with, while its natural durability ensures longevity in exposed environments.

Meranti (Shorea spp.)

Meranti offers rich, warm tones and fine grain, making it a favorite for interior design, cabinetry, and paneling. Lightweight yet structurally sound, this species blends aesthetic appeal with everyday performance. Available in red, yellow, and white varieties, reclaimed Meranti delivers a sustainable and elegant solution for high-end joinery and decorative finishes.

For more information or to request detailed wood data sheets, feel free to contact us or follow this link to reach Kitaru Lumberyard directly.

Picture by Kaltimber taken in East Kalimantan while surveying on the Sungai Mahakam

Ulin Ironwood: An In-Depth Guide to This Unique and Valuable Hardwood

Introduction to Ulin Ironwood

Ulin ironwood, scientifically known as Eusideroxylon zwageri, is one of the most remarkable and valuable tropical hardwoods found in Southeast Asia, particularly in the rainforests of Borneo and Sumatra. Known for its extreme durability and resistance to environmental factors, Ulin ironwood is often referred to as "Bornean ironwood" or "kayu besi" (ironwood) in Indonesia, and it has earned a legendary status among builders and artisans for its strength and longevity.

Botanical Characteristics and Growth

The Ulin tree is an evergreen species that belongs to the family Lauraceae. This species is monotypic, meaning that it is the only species within the genus Eusideroxylon. Ulin trees can reach towering heights of up to 50 meters (164 feet), with diameters that can exceed 2 meters (6.5 feet). The tree has a straight bole that is usually host to a parasitic vine called Cassytha, with leaves reduced to scales, often extending up to half of the tree's height. The trunk often displays small, rounded buttresses at the base, giving it an appearance reminiscent of an elephant’s foot. These features make the Ulin tree one of the giants of the Southeast Asian rainforest.

Leaves and Flowers: The leaves of the Ulin tree are dark green, simple, and leathery, with an elliptical to ovate shape measuring 14–18 cm long and 5–11 cm wide. These leaves are glossy due to a waxy coating, and young leaves exhibit a reddish-brown to yellowish-red hue. The flowers of the Ulin tree are pale yellow and hermaphroditic, featuring six tepals and an actinomorphic structure, meaning they are radially symmetrical. Pollination is primarily carried out by bees and other insects, while its fruits, which are drupes, are dispersed by vertebrate animals such as birds, monkeys, bats, and rodents.

Habitat and Ecology

Ulin ironwood thrives in lowland tropical rainforests and is commonly found in valleys, hillsides, and low ridges where there is sufficient soil moisture, ranging from sea level up to elevations of 625 meters. This species prefers partial shade in its early years but requires abundant sunlight as it matures. Ulin trees are a significant component of primary forests, contributing to the forest canopy. The slow growth rate of the Ulin tree, with an average radial growth of just 0.058 cm per year, reflects its adaptation to the nutrient-poor soils and competitive environment of the tropical rainforest.

Conservation Status and Efforts

The Ulin tree is currently listed as vulnerable on the IUCN Red List, primarily due to overexploitation and habitat loss. Extensive logging over the past decades has significantly reduced the population of mature Ulin trees, making them increasingly rare in their natural habitat. The government of Indonesia, along with the state government of Sarawak in Malaysia, has implemented bans on the export of Ulin wood to curb illegal logging and promote conservation efforts. However, illegal logging and smuggling remain significant threats to the species, necessitating stringent enforcement and sustainable management practices.

Conservation efforts are critical for ensuring the survival of Ulin ironwood. Initiatives include the establishment of protected areas such as national parks and reserves, where logging is strictly prohibited. In addition, sustainable forestry practices, including selective logging and replanting, are being promoted to balance the economic benefits of Ulin wood with the need for conservation.

Properties of Ulin Ironwood

Ulin ironwood is prized for its exceptional physical properties:

  • Durability: The heartwood of Ulin is renowned for its extreme durability and resistance to decay, insects, and marine borers. It has a service life of up to 100 years even in direct soil contact and more than 20 years in tropical marine environments, making it ideal for both terrestrial and maritime applications.

  • Density and Hardness: Ulin wood is incredibly dense, with a fine and even texture. It is resistant to termites and other wood-boring insects, which contributes to its longevity. The high density of the wood makes it heavy and challenging to work with, but this also ensures its robustness and durability.

  • Resistance to Environmental Factors: Ulin ironwood is highly resistant to changes in temperature, humidity, and the corrosive effects of seawater. This resistance makes it an excellent choice for outdoor and marine applications, where it can withstand harsh environmental conditions without deteriorating.

  • Aesthetic Qualities: The wood of Ulin is naturally glossy and has a pleasant lemon scent when freshly cut. Over time, the wood darkens from a light brown to a deep reddish-brown or nearly black, adding to its aesthetic appeal. The grain is typically straight, but it can also be slightly interlocked, giving the wood a distinctive appearance.

Uses of Ulin Ironwood

Due to its remarkable properties, Ulin ironwood has a wide range of uses:

  1. Construction: Ulin wood is extensively used in construction, particularly in areas with high moisture levels, such as Kalimantan. Traditional houses in these regions are often built entirely from Ulin wood, including the roof shingles, which are known as "atap sirap." The wood's resistance to decay and termites makes it an ideal material for building homes that last for generations.

  2. Maritime and Industrial Applications: Ulin wood's resistance to marine borers and other environmental factors makes it highly suitable for maritime construction, including shipbuilding, dock construction, and wharfs. It is also used in heavy industrial applications, such as railway sleepers, power line poles, and industrial flooring.

  3. Furniture and Decorative Items: The fine grain and natural luster of Ulin wood make it a popular choice for high-quality furniture and decorative items. Its ability to take on a high polish enhances its appeal for use in fine cabinetry and specialty woodcrafts.

  4. Cultural and Traditional Uses: In addition to its practical uses, Ulin wood holds cultural significance in many communities. It is often used to make traditional tools, weapons, and ceremonial objects, reflecting its importance in local customs and traditions.

Challenges and Sustainability of Ulin Ironwood

The increasing rarity and high demand for Ulin ironwood have raised significant sustainability concerns. Overharvesting and illegal logging have depleted many natural stands of Ulin, and the slow growth rate of the species means that it cannot easily recover from heavy exploitation. To address these challenges, several measures are being implemented:

  • Sustainable Forestry Practices: Sustainable forestry practices, including selective logging and controlled harvesting, are crucial for the conservation of Ulin ironwood. By limiting the number of trees cut and ensuring that young trees are allowed to mature, these practices help maintain healthy forest ecosystems and ensure the continued availability of Ulin wood.

  • Regulations and Enforcement: Strict regulations and enforcement are necessary to combat illegal logging and ensure that Ulin wood is harvested sustainably…if sustainable harvest is even possible in the first place! Governments and environmental organizations are working together to monitor forests, enforce laws, and promote sustainable management practices.

  • Community Involvement: Engaging local communities in conservation efforts is essential for the success of sustainability initiatives. By involving communities in forest management and providing economic incentives for sustainable practices, conservation programs can help protect Ulin ironwood while supporting local livelihoods.

Conclusion

Ulin ironwood is a truly unique and valuable hardwood with a rich history and a wide range of applications. Its exceptional durability, resistance to environmental factors, and aesthetic qualities make it highly sought after for construction, maritime use, and fine woodworking. However, the increasing rarity of Ulin wood and the challenges associated with its conservation highlight the need for sustainable management practices and effective enforcement of regulations. By balancing the economic benefits of Ulin wood with the need for conservation, we can ensure that this remarkable species continues to thrive in its natural habitat for generations to come.

Explore More about Ulin Ironwood

For more information on Ulin ironwood and sustainable forestry practices, visit our website or contact us directly. Together, we can work towards a more sustainable future for this incredible resource.

Source used & reference.

Photo by Kaltimber

Kenapa Harus Memilih Kayu Ulin Bekas?

Kayu Ulin Kalimantan dikenal sebagai kayu terbaik untuk berbagai kebutuhan konstruksi. Dikenal karena kekuatan, ketahanan terhadap air, dan serangga, kayu Ulin adalah pilihan unggul di dunia konstruksi. Namun, seiring waktu, kayu Ulin semakin langka karena pohon Ulin membutuhkan waktu sangat lama untuk tumbuh, sehingga sulit untuk panen secara cepat. Di sinilah Kaltimber hadir sebagai pionir dalam jual kayu ulin bekas yang berkualitas dan 100% reclaim, membantu memenuhi kebutuhan pasar tanpa merusak lingkungan.

Kaltimber: Pusat Jual Kayu Ulin Bekas Berkualitas

Kaltimber bangga menjadi pemasok jual kayu Ulin bekas asli dan berkualitas tinggi. Kami tidak menjual kayu Ulin "palsu" atau kayu yang hanya berumur beberapa bulan yang sering diklaim sebagai reclaim. Semua kayu kami adalah hasil reclaim dari proyek-proyek bongkaran, dengan kualitas terjamin dan daya tahan yang sudah teruji. Kami melayani penjualan kayu Ulin bekas di berbagai kota besar di Indonesia, termasuk:

  • Jual kayu Ulin bekas Banjarmasin

  • Jual kayu Ulin bekas Jogja

  • Jual kayu Ulin bekas Bandung

  • Jual kayu Ulin bekas Jakarta

Kaltimber memastikan kayu yang Anda dapatkan adalah kayu Ulin bekas asli dari bongkaran, dengan kualitas terbaik yang siap digunakan untuk berbagai proyek, seperti pagar kayu bekas, lantai, atau konstruksi lainnya.

Kayu Ulin Kalimantan: Kualitas yang Tak Tertandingi

Apa yang membuat kayu Ulin Kalimantan begitu istimewa? Kayu ini terkenal karena seratnya yang sangat padat, membuatnya tahan terhadap kelembapan dan serangan hama. Inilah sebabnya kayu Ulin sering digunakan dalam proyek-proyek yang terekspos kondisi cuaca ekstrem. Balok kayu Ulin dari kami sangat cocok untuk proyek bangunan yang membutuhkan daya tahan tinggi.

Jual Balok Kayu Ulin Bekas Jogja dan Kota Lainnya

Untuk proyek-proyek konstruksi di Jogja, kami juga menyediakan jual balok kayu Ulin bekas Jogja. Produk balok kayu Ulin kami sangat ideal untuk proyek renovasi maupun bangunan baru. Selain itu, bagi Anda yang berada di Yogyakarta, kami juga menyediakan layanan jual kayu Ulin bekas Jogyakarta.

Harga Kayu Ulin Bekas: Solusi Ekonomis

Mungkin Anda bertanya-tanya, berapa harga kayu Ulin per batang atau harga kayu Ulin per m3? Dibandingkan dengan kayu Ulin baru, kayu Ulin bekas dari Kaltimber menawarkan nilai ekonomis yang lebih baik. Meski harga kayu Ulin baru bisa tampak lebih murah di awal, risiko deformasi dan penyusutan lebih tinggi. Dengan kayu Ulin bekas, Anda mendapatkan stabilitas yang lebih baik karena kayu sudah mengalami pengeringan alami selama bertahun-tahun.

Produk Tambahan: Minyak Kayu Ulin dan Potongan Kayu Ulin

Selain jual kayu Ulin bekas potongan, Kaltimber juga menyediakan produk perawatan kayu, seperti minyak Ulin. Minyak ini berfungsi untuk menjaga dan memperpanjang umur kayu Anda, melindunginya dari cuaca ekstrem dan serangga. Kami juga memiliki jual kayu Ulin bekas bongkaran untuk proyek yang membutuhkan bahan dalam jumlah besar.

Kepercayaan pada Sumber Terpercaya

Saat membeli kayu Ulin, sangat penting untuk memastikan Anda mendapatkannya dari pemasok yang terpercaya. Kaltimber memastikan semua kayu Ulin yang kami jual diperoleh secara bertanggung jawab, 100% reclaim, dan berkomitmen pada keberlanjutan. Jangan sampai Anda tergoda dengan penawaran murah dari penjual "dadakan" yang mungkin menawarkan kayu Ulin yang tidak asli atau kayu baru yang diklaim sebagai bekas.

Kesimpulan

Jika Anda mencari kayu Ulin berkualitas untuk proyek konstruksi, Kaltimber adalah pilihan yang tepat. Kami menawarkan jual kayu Ulin bekas di Jakarta, Jogja, Bandung, Banjarmasin, dan berbagai kota besar lainnya. Dengan pengalaman bertahun-tahun dan komitmen kuat terhadap keberlanjutan, kami menyediakan kayu Ulin bekas asli yang berkualitas tinggi, jauh lebih baik daripada kayu baru yang rentan terhadap deformasi. Harga kayu Ulin yang kami tawarkan kompetitif, memberikan Anda solusi yang tidak hanya ekonomis tetapi juga ramah lingkungan.

Hubungi kami sekarang dan dapatkan kayu Ulin bekas terbaik untuk proyek Anda!

 

What is reclaimed wood anyway?

Reclaimed wood is an umbrella term used to define wood that has been previously logged and used for building or other projects. It can also be referred to as recycled timber or reclaimed timber. This can include post-consumer, water-recovered, and post-industrial. By using lumber that would otherwise become trash, we can create a sustainable building practice, while creating high quality wood for structural and other purposes.  
 

We know exactly where each piece of Kaltimber wood comes from, ensuring that we can account for it and guarantee it comes from a disused structure that was being demolished.

Why choosing reclaimed timber?

Indonesia’s rain forests are facing unprecedented pressure. Given that up to 90% of hardwood logging in Indonesia is illegal and destructive, it is most likely that new timber purchased here has been harvested unsustainably, and has contributed to forest (new and old growth as well as copse) destruction. Indonesia is also the world's third largest emitter of carbon, due to its high deforestation rate.

By choosing reclaimed hardwood over new sawn timber, you are actively contributing to reducing deforestation and carbon emissions in Indonesia. Aged reclaimed timbers are in many cases of superior quality to many commercially available timbers as, due to dwindling stock, younger and smaller trees of inferior quality are being increasingly relied on to supply the domestic timber market. Reclaimed timbers have character and warmth, and can be left in a rustic state or finished to a clean even cut.

Terms you might hear when talking about reclaimed wood: 

Post-Consumer Reclaimed
Wood reclaimed primarily from old structures such as old buildings, bridges and other sources.

Post-Industrial Reclaimed
Wood reclaimed from the waste produced by wood processing and manufacturing, such as small or thin scrap material from furniture manufacturing. 

Underwater Reclaimed
Wood harvested from underwater forests flooded decades ago to create reservoirs for water storage and power generation. 

 

Wood Glossary

 Learn all about the wood related vocabulary you might find on our website

Back Relieved

grooves on the back face of the board that allow the board to expand an contract

Bolt Hole

a hole made by putting a bolt through

Bow

a lengthwise bend in the wood

Check

a crack across the growth rings not extending from one surface to another

Cup

a bend in the width of the wood so that it doesn’t lie flat on the ground

Knot

base of a side branch or dormant bud, it is an imperfection in the wood 

Mortise

a hold through the piece of wood

Notch

a piece of the wood missing making it non-uniform

Pith

a dark spot which was once an upward growing twig when the tree was young

Sap Wood

the outer layer of the wood of a tree, which, when the tree was living, contained tissue which provided water and food materials to the tree

Split

a crack across the growth rings extending from one surface to another

Twist

a spiral distortion along the length of a piece of timber

Variation

a natural variation of colour in the wood that is neither sap wood or pith is considered normal 

Environmental Policy

Our Commitment to Sustainability 🌿

At Kaltimber, sustainability is at the core of everything we do. We believe that high-quality timber doesn’t have to come at the cost of the environment. That’s why we specialize in ethically sourced, reclaimed wood—giving new life to materials from decommissioned structures while reducing deforestation and waste.

Our environmental policy reflects our deep commitment to responsible business practices. From minimizing energy and water consumption to promoting waste reduction and ethical sourcing, we continuously strive to lower our ecological footprint. We work closely with local communities, artisans, and designers to maximize resource efficiency and support a more sustainable future.
In partnership with various NGOs, we have actively replanted thousands of Ulin (ironwood) trees to ensure the preservation of this precious species for future generations. Starting January 2025, we are expanding our reforestation efforts to include other essential native species, further enhancing biodiversity and ecosystem restoration.

We hold ourselves accountable by setting clear environmental goals, training our team, and regularly reviewing our practices to ensure continuous improvement. By choosing Kaltimber, you are supporting a company dedicated to preserving natural resources and promoting a circular economy.

Read our full Environmental Policy to learn more about our initiatives and commitments.

Decommissioned building visit before demolition and reclaining

 

Privacy Policy for Kaltimber

At Kaltimber, accessible from www.kaltimber.com, one of our main priorities is the privacy of our visitors. This Privacy Policy document contains types of information that is collected and recorded by Kaltimber and how we use it.

If you have additional questions or require more information about our Privacy Policy, do not hesitate to contact us.

This Privacy Policy applies only to our online activities and is valid for visitors to our website with regards to the information that they shared and/or collect in Kaltimber. This policy is not applicable to any information collected offline or via channels other than this website.

Consent

By using our website, you hereby consent to our Privacy Policy and agree to its terms.

Information we collect

The personal information that you are asked to provide, and the reasons why you are asked to provide it, will be made clear to you at the point we ask you to provide your personal information.

If you contact us directly, we may receive additional information about you such as your name, email address, phone number, the contents of the message and/or attachments you may send us, and any other information you may choose to provide.

We may ask for your contact information, including items such as name, company name, address, email address, and telephone number.

How we use your information

We use the information we collect in various ways, including to:

  • Provide, operate, and maintain our website

  • Improve, personalize, and expand our website

  • Understand and analyze how you use our website

  • Develop new products, services, features, and functionality

  • Communicate with you, either directly or through one of our partners, including for customer service, to provide you with updates and other information relating to the website, and for marketing and promotional purposes

  • Send you emails

  • Find and prevent fraud

Log Files

Kaltimber follows a standard procedure of using log files. These files log visitors when they visit websites. All hosting companies do this and a part of hosting services' analytics. The information collected by log files include internet protocol (IP) addresses, browser type, Internet Service Provider (ISP), date and time stamp, referring/exit pages, and possibly the number of clicks. These are not linked to any information that is personally identifiable. The purpose of the information is for analyzing trends, administering the site, tracking users' movement on the website, and gathering demographic information.

Advertising Partners Privacy Policies

You may consult this list to find the Privacy Policy for each of the advertising partners of Kaltimber.

Third-party ad servers or ad networks uses technologies like cookies, JavaScript, or Web Beacons that are used in their respective advertisements and links that appear on Kaltimber, which are sent directly to users' browser. They automatically receive your IP address when this occurs. These technologies are used to measure the effectiveness of their advertising campaigns and/or to personalize the advertising content that you see on websites that you visit.

Note that Kaltimber has no access to or control over these cookies that are used by third-party advertisers.

Third Party Privacy Policies

Kaltimber's Privacy Policy does not apply to other advertisers or websites. Thus, we are advising you to consult the respective Privacy Policies of these third-party ad servers for more detailed information. It may include their practices and instructions about how to opt-out of certain options.

You can choose to disable cookies through your individual browser options. To know more detailed information about cookie management with specific web browsers, it can be found at the browsers' respective websites.

CCPA Privacy Rights (Do Not Sell My Personal Information)

Under the CCPA, among other rights, California consumers have the right to:

Request that a business that collects a consumer's personal data disclose the categories and specific pieces of personal data that a business has collected about consumers.

Request that a business delete any personal data about the consumer that a business has collected.

Request that a business that sells a consumer's personal data, not sell the consumer's personal data.

If you make a request, we have one month to respond to you. If you would like to exercise any of these rights, please contact us.

GDPR Data Protection Rights

We would like to make sure you are fully aware of all of your data protection rights. Every user is entitled to the following:

The right to access – You have the right to request copies of your personal data. We may charge you a small fee for this service.

The right to rectification – You have the right to request that we correct any information you believe is inaccurate. You also have the right to request that we complete the information you believe is incomplete.

The right to erasure – You have the right to request that we erase your personal data, under certain conditions.

The right to restrict processing – You have the right to request that we restrict the processing of your personal data, under certain conditions.

The right to object to processing – You have the right to object to our processing of your personal data, under certain conditions.

The right to data portability – You have the right to request that we transfer the data that we have collected to another organization, or directly to you, under certain conditions.

If you make a request, we have one month to respond to you. If you would like to exercise any of these rights, please contact us.

Children's Information

Another part of our priority is adding protection for children while using the internet. We encourage parents and guardians to observe, participate in, and/or monitor and guide their online activity.

Kaltimber does not knowingly collect any Personal Identifiable Information from children under the age of 13. If you think that your child provided this kind of information on our website, we strongly encourage you to contact us immediately and we will do our best efforts to promptly remove such information from our records.

 
 

Terms & Conditions


Here you will find the terms and conditions when making a purchase with Kaltimber, where we outline what you are agreeing to when entering into a purchase with Kaltimber. 

Please review them to limit confusion and enable us to provide you with the highest possible customer service experience.

You can always contact us with any questions at info@kaltimber.com
 

 

We guarantee the lowest price!

As a market leader we understand our clients needs for high quality products, reliable warranty and affordable prices.

Here under, our price promise.

If you find cheaper elsewhere we price match and add 5% discount!

You can claim a refund for the difference if you happen to find your product cheaper on another website.

Storage | Delivery | Installation

What we can help you with as part of our services and recommendations

 STORAGE

As a service to you, Kaltimber will store your purchased products for up to 30 days under some terms and conditions. Your materials will be stored directly on Kaltimber’s premises or in a similarly controlled storage space as determined by Kaltimber.  Your materials will be segregated and clearly marked with your name (including project name if available).
Buyer is ultimately responsible of his material once production is done.

DELIVERY

Delivery requirements are usually discussed at the quote stage so that additional costs are included. For international orders, Kaltimber can recommend a list of shipping companies that we use for inter-island or international shipping.

INSTALLATION

Kaltimber doesn't install flooring or decking, but we have reliable partners we highly recommend and can happily connect you to.

Strapped smooth ulin decking ready to travel the world!

Strapped smooth ulin decking ready to travel the world!

Limited Warranty

Examine the details of our 25-year limited guarantee, which guards against premature wear and manufacturing faults on our products. Our dedication to excellence guarantees you will have piece of mind knowing that your purchase is long-term safeguarded.

Important Installation Guidelines for Your Reclaimed Ulin Decking and Flooring

We take great pride in providing you with unique and beautiful materials. However, it's essential to understand that reclaimed ulin behaves differently compared to other woods. To ensure the successful installation and longevity of your project, we have prepared these important installation guidelines.

Qualified Installation

We highly recommend using a professional installer with a proven track record of working with reclaimed ulin. Even experienced woodworkers may need specialized expertise for this unique material.

Maximum Flooring Area

For flooring installations, do not exceed 40 square meters at once to prevent issues related to expansion and contraction.

Expansion Gaps

Maintain an expansion gap of at least 1cm on both sides (left and right against wall or structure) and recommended the same in front and back for both flooring and decking. For decking, also respect an expansion gap between planks of a minimum of 6mm for narrow planks and 8mm for wide planks.

Proper Fastening

Use appropriate wood screws and pre-drill before inserting the screw to prevent cracking or splitting of the wood. Under no circumstances should nails or nail guns be used in the installation.

Batten and Joist

Ensure that the batten and joist system is of sufficient height to allow proper airflow, as heat buildup can damage the planks. Additionally, the area below where batten and joist are installed should allow for water evacuation to prevent moisture buildup, which can also damage the wood.

Maintenance

Once installed, be cautious with maintenance. For flooring, avoid washing with water, as it can lead to warping and damage. Stains can be challenging to remove from smooth wood and impossible to remove from rustic surfaces.

By adhering to these guidelines, you will enjoy the natural beauty and durability of reclaimed ulin for years to come. If you have any questions or concerns, please do not hesitate to contact us for further assistance. Your satisfaction is our top priority, and we are here to support you every step of the way.

Warranty and Replacement Policy

If the installation guidelines outlined above are not followed, we regret that we cannot provide free replacement of the wood. However, we are committed to assisting you in resolving any issues you may encounter during or after installation.

Consultation and Support

We are more than willing to provide consultation and on-site assistance as soon as our schedule allows. Depending on the nature of the consultation, it might be free. Our goal is to ensure the successful completion of your project and address any challenges that may arise.

Documentation Requirements

To be eligible for a warranty claim or wood replacement, we require clear documentation of the installation process:

  1. Pictures during Installation: We need pictures that clearly show the placement of battens and joists, ensuring they meet the recommended standards include sizes and spacing.

  2. Post-Installation Videos: After the installation is complete, provide videos showing the proper expansion gaps at various points on the decking or near the wall in the case of flooring.

Contractor/Installer Responsibility

We expect the contractor or installer to share our commitment to a successful installation. They should be fully capable of addressing any issues, whether they arise from unintentional mistakes or otherwise.

Final Thoughts

Your satisfaction with our reclaimed ulin products remains our top priority. These guidelines are designed to help you achieve the best results while using our unique materials. We encourage you to reach out if you have any questions or concerns during your project. We are here to support you, ensuring that your experience with reclaimed ulin is exceptional from start to finish.

Thank you for choosing our reclaimed ulin products. If you have any questions or need further assistance, please don't hesitate to contact us. We look forward to helping you achieve a beautiful and long-lasting result!