Cork Flooring
Renewable bark-based flooring — soft underfoot, sound-absorbing, naturally antimicrobial without any added biocide.
Toxicity Screening — All Clear
This material screens clear across all seven independent toxicology authorities we use on every project.
Material Type
Tree-Bark Renewable Flooring
Material Description
Cork flooring is the outer bark of the cork oak (Quercus suber), harvested every 9–12 years without felling the tree — the bark regenerates and the same trees produce cork for over a century. As a floor, cork is warm to the touch, soft underfoot, and naturally sound-absorbing thanks to its cellular structure of roughly 50% air by volume. Suberin — the waxy compound in cork — is biologically active on its own, so cork-floor surfaces resist mold and bacterial colonization without any added biocide. The cellular structure also gives cork compressive recovery: dents from furniture legs spring back. Plank, tile, and click-lock cork floors all qualify; EBH specifies cork flooring with NAF (no-added-formaldehyde) HDF cores or solid-cork construction. For cork used as rigid exterior insulation board, see the Cork Insulation page.
Composition & Origin
Health Profile — All Endpoints Clear
Severity scored 0–10 against the same 10 hazard endpoints we use for the chemical families on the avoid list. Every score is 1–2 — essentially no signal across every endpoint.
Common Forms & Brands
- Amorim Wise & Wicanders cork flooring
- ThermaCork rigid insulation board
- Globus Cork tile
- Common framing: cork sheet, agglomerated cork board, cork underlayment, cork tile
Why We Use It
- Renewable — harvested without cutting the tree
- Naturally antimicrobial via suberin content (no added biocides)
- Fire-resistant — cork char-layers and slows combustion
- Quiet underfoot and warm to touch
- Carbon-negative life cycle — cork oaks store more CO₂ than the harvest releases
Where It Performs Best
- Cork plank and tile flooring (residential & commercial)
- Click-lock floating cork floors over slab or subfloor
- Underlayment beneath wood or laminate flooring
- Cork wall surfacing in offices and quiet rooms
Building Applications for Cork Flooring
Listed alphabetically. Where in a home this material earns its keep.
Click-Lock Floating Cork Floor
Cork Plank Flooring
Cork Tile Flooring
Cork Wall Surfacing
Floor Underlayment
Stair Tread Cork Surfacing