Rubberwood (likely with fungal staining)
Hevea brasiliensis • Hardwood
Grain Pattern
Straight to slightly interlocked with a coarse, open-textured appearance. The sample shows faint cathedral patterns and significant fungal spotting (spalting) that creates irregular dark flecks across the face.
Color Description
Straw to light blonde heartwood that is not clearly demarcated from the sapwood. It typically exhibits a low to medium luster and may darken to a more yellowish-brown color over time with light exposure.
Hardness Rating
935 lbf (Medium)
Durability Rating
Non-durable; susceptible to fungal attack and insect infestation if not treated immediately after harvest.
Common Uses
Budget-friendly furniture, cabinetry, cutting boards, wooden toys, interior millwork, and small turned objects.
Geographic Origin
Native to the Amazon rainforest but now primarily grown in Southeast Asia (Thailand, Malaysia, Indonesia) on plantations.
Market Value & Sustainability
Estimated Market Value
$3.00 - $5.00 per board foot (standard grade)
Wood Age Estimate
The sample appears to be modern plantation-grown timber, though the rough-cut edges and fungal staining suggest it has been stored in a damp environment for several months to a few years.
Sustainability Status
Highly sustainable; primarily harvested from rubber plantations at the end of their latex-producing cycle. Not CITES listed and frequently FSC certified.
Workability
Generally easy to work with both hand and machine tools, though it has moderate blunting effects on cutters due to latext remnants. It glues, stains, and finishes well, though the large pores may require filling for a glass-smooth finish.
Notable Features
Often referred to as "Parawood." The wood contains residual latex which can gum up sandpaper. The dark spots visible in the image are likely blue/black stain fungus common in this species if not kiln-dried quickly.
Finish Recommendations
Takes stains and paints very well. A clear polyurethane or lacquer is recommended to protect the light color; sanding sealer is advised due to the wood's absorbent nature.
Identification Confidence
Medium-High. The light color, coarse vessel structure, and specific pattern of fungal deterioration are classic indicators of Rubberwood used in consumer shipping or low-cost furniture.