Rubberwood: The Sustainable Hardwood Behind Cambodia's Finest Furniture
Rubberwood is a sustainable, durable hardwood used in fine furniture across Cambodia. Learn its properties, care, and why we use it at Khmer Wood Design.
WOOD TYPES
Introduction: The Wood That Keeps On Giving
If you have ever driven through Kampong Cham or Kampong Thom, you have seen them — rows of slender trees, tapped with spiral cuts, weeping white latex into small cups. These are rubber trees. And for 25 to 30 years, they do one job: produce rubber.
Then they stop. Latex yields decline, the tree is felled, and new ones are planted.
For most of the twentieth century, that felled tree was simply burned. Today, it is one of the most important furniture hardwoods in the world. It is called rubberwood — also known as parawood, plantation hardwood, or, in a piece of 2002 marketing, "Malaysian Oak." At Khmer Wood Design, we work with it for a simple reason: it is honest wood. It does not pretend to be rosewood. It is affordable, workable, and genuinely sustainable — and when it is properly dried, treated and finished, it makes furniture that lasts for decades.
What Is Rubberwood?
Rubberwood is the timber of Hevea brasiliensis — the Pará rubber tree. It is a medium-density tropical hardwood with a straight grain, an open texture, and a natural colour that ranges from light blonde to medium tan, sometimes with darker brown streaks. It darkens slightly with age and takes stain exceptionally well, which is why it is so widely used for furniture that is finished in walnut, teak or mahogany tones.
The numbers matter: The Janka hardness of 960 lbf places rubberwood comfortably above pine (around 380–500 lbf) and comparable to black cherry (950 lbf). It is not as hard as teak (1,155 lbf) or rosewood (2,000+ lbf), but it is a genuine hardwood — stable, durable, and well-suited to furniture that will be used daily.
The shrinkage figures are equally important. A T/R ratio of 2.2 means rubberwood moves predictably rather than twisting unpredictably as it dries. Once properly seasoned, it is stable in service — which is exactly what you want in a table or cabinet.
The Sustainability Story: Why Rubberwood Is Different
Most furniture hardwoods come from trees felled specifically for timber. Rubberwood does not.
A rubber tree is planted for latex, not for wood. It produces rubber for a quarter of a century before it is harvested. When it is finally felled, a new tree is planted in its place. The wood is, in effect, a by-product of an existing agricultural industry — and its use means fewer trees need to be cut from natural forests to meet furniture demand.
Rubberwood is also sometimes described as a carbon sink. The trees absorb carbon throughout their latex-producing life, and when the wood is made into durable furniture, that carbon remains locked in the timber rather than being released through burning.
The honest caveat: rubberwood has very little natural resistance to decay and is susceptible to fungal staining and insect attack. For this reason, it must be treated before use. Historically, this limited its application — but the development of chemical treatment processes in the 1980s changed everything. Today, properly treated rubberwood is a mainstream furniture hardwood, and the treatment is standard practice rather than a workaround.
At Khmer Wood Design, we prioritise suppliers who can evidence responsible sourcing. We will always tell you where the wood in your piece came from.
Is Rubberwood Good for Furniture?
Yes — with two important conditions.
Condition one: it must be properly dried. Rubberwood tends to warp and twist during drying if the process is rushed or poorly controlled. Kiln-dried rubberwood, brought down to the correct moisture content for its destination climate, is stable and reliable. Improperly dried rubberwood is not. This is why the quality of the maker matters more than the species on the label.
Condition two: it must be properly sealed. Because rubberwood is perishable in its raw state, the finish is not decoration — it is protection. A well-sealed rubberwood piece will resist moisture and last for decades. An unsealed one will swell, stain and degrade. In Cambodia's humidity, this distinction is critical.
When both conditions are met, rubberwood performs beautifully. It machines well by hand and by power tool. It glues, stains and finishes cleanly. It takes paint and lacquer evenly. And it holds its shape once in service.
What it is good for:
Cabinets, wardrobes and built-in storage
Chairs, desks and bed frames
Kitchen items such as cutting boards and butcher blocks
Any furniture where a light, straight-grained hardwood is the right choice
What it is not ideal for:
Structural applications requiring high load-bearing strength (it is classified as strength group SG5, not recommended for structural work)
Outdoor furniture without extensive protective treatment
Pieces that will be exposed to standing water or prolonged damp
How Rubberwood Compares to Other Woods
Buyers often ask how rubberwood stacks up against the alternatives. Here is a straight comparison.
Rubberwood vs Acacia: Acacia is denser and harder, making it more resistant to scratches and dents. It is also generally more expensive. Rubberwood is lighter, more affordable, and easier to work with. Both are sustainable plantation hardwoods. For a piece where weight and cost matter, rubberwood is often the smarter choice. For a piece that will take heavy use and needs maximum hardness, acacia has the edge.
Rubberwood vs Teak: Teak is the gold standard for durability, with natural oils that repel insects and moisture. It costs significantly more. Rubberwood, properly treated and sealed, offers a comparable lifespan in interior furniture at a fraction of the price. For outdoor furniture, teak wins. For indoor pieces, rubberwood is an excellent, honest alternative.
Rubberwood vs Pine: Pine is softer (380–500 lbf Janka) and more prone to denting. Rubberwood is harder, more stable, and takes a finer finish. For furniture that will be used daily, rubberwood is the better choice.
How We Work With Rubberwood at Khmer Wood Design
Rubberwood is one of the timbers we use for pieces that require a light, stable, workable hardwood — particularly cabinets, built-in storage, and furniture that will be finished in a darker tone. We kiln-dry it to the correct moisture content for Cambodia's climate, and we seal every surface, including the undersides and the insides of drilled holes, so that humidity cannot enter from one side faster than the other.
We also use reclaimed rubberwood where the piece allows it — timber recovered from old furniture or offcuts from larger projects. This is part of our broader green policy: nothing usable is thrown away. Offcuts become our Collectibles & Curios range. Sawdust goes to local farms for composting.
If you commission a piece from us and want to know exactly which timber will be used, ask. We will tell you.
Care and Maintenance
Rubberwood is easy to live with, provided you follow a few simple rules. The goal is simple: keep it clean, keep it dry, and keep it sealed.
Daily care: Dust with a soft, dry cloth. For sticky spots, use a barely damp cloth with mild soap, then dry the surface immediately. The cloth should feel cool and lightly damp — not wet enough to leave beads or streaks.
What to avoid: Bleach, ammonia, abrasive powders and aggressive degreasers. Prolonged direct sunlight, which dries the finish unevenly. Standing water, which can penetrate the finish and cause swelling or staining.
Practical protection: Use coasters, felt pads, placemats and trivets. Keep the piece away from heat vents. If you notice a raised seam after a spill, wipe it dry immediately and stop further moisture exposure — catching it early prevents a small finish repair from becoming a full refinishing job.
Refinishing: Solid rubberwood can be sanded and refinished if the finish becomes scratched or worn. Start lightly, test in a hidden spot first, and stop if you see a veneer layer. Our pieces use solid rubberwood where strength matters, not veneer over particleboard.
The one warning for allergy sufferers: Rubberwood comes from the same tree that produces natural latex. Individuals with a latex or rubber allergy may react to rubberwood. If this applies to you, tell us, and we will recommend a different timber.
Commission a Piece in Rubberwood
Rubberwood is not the most glamorous wood in the world. It does not have the legend of Neang Nuon or the price tag of teak. What it has is honesty: it is durable, sustainable, workable, and it does its job beautifully when treated with respect.
If you are looking for a piece — a cabinet, a coffee table, a built-in unit — and you want a wood that is genuinely sustainable and genuinely reliable, rubberwood is a strong choice. We will tell you exactly where it came from, how it was dried, and how it was sealed.
Contact us to discuss a commission in rubberwood or any of the other Cambodian timbers we work with.
FAQs
Is rubberwood a hardwood?
Yes. Despite the name, rubberwood is a hardwood — the timber of a broad-leaved tree (Hevea brasiliensis). It is classed as a light hardwood, with a Janka hardness of 960 lbf, which places it above pine and comparable to black cherry.Is rubberwood durable?
Yes, when properly treated, dried and sealed. Untreated rubberwood is perishable and vulnerable to insects and fungus. Treated rubberwood in a well-sealed piece will last for decades indoors.Is rubberwood sustainable?
Yes. Rubber trees are planted for latex production and harvested for timber only after their latex-producing life ends — typically 25 to 30 years. New trees are planted in their place. Using rubberwood reduces pressure on natural forests.Does rubberwood warp?
It can warp during drying if the process is rushed. Kiln-dried rubberwood is stable in service. The key is to buy from a maker who controls the drying process.Can rubberwood be stained?
Yes. Rubberwood stains and finishes exceptionally well. It is frequently finished to resemble walnut, teak or mahogany, which is why it is so widely used in furniture.Is rubberwood good for tables?
Yes, for indoor tables. It is hard enough to resist daily wear when properly sealed, and stable enough to hold its shape. For outdoor tables or tables exposed to standing water, it is not the right choice.