Questions about Thermawood waterproof real wood?
Here’s how it works.
100% real wood. Built to handle water.
Is Thermawood real wood?
Yes. It's 100% solid hardwood.
You can sand it, stain it, and refinish it.
What is thermally modified wood?
Real hardwood — changed using heat and steam so it doesn’t react to moisture like normal wood.
Is it actually waterproof?
Yes, It doesn’t absorb water like traditional hardwood
so it doesn’t cup, warp, or swell.
Is this something new?
No. Europe has been enjoying this wood for nearly 40 years.
Can this go over concrete slabs or radiant heat?
Yes. That’s one of the biggest advantages. It’s built for both.
How does heat and steam make wood handle water?
The wood is heated to around 380° all the way through, removing the organic material inside it.
No organic material = no cupping, warping, or swelling.
The steam cools the wood and locks in the change.
Where can this actually be used?
Anywhere — coastal homes, bathrooms, concrete slabs, decks,
cladding, beams, trim, pergolas, doors, and even saunas.
Can I use wide plank flooring like White Oak?
Yes. That’s one of the biggest advantages. We offer true wide planks — 7″–11″ widths with lengths up to 14′–16′.
Does it install differently?
No. It installs like real wood — because it is real wood. It sands, stains, and finishes the same.