Prebuilt radiant subfloor — no on-site coordination

One panel.
Structural, heated,
finished.

ThermaSlab combines subfloor, radiant heat, and gel-cushion isolation in a factory-finished unit. You frame once. The system is already inside.

Structural rated 40 psi gel chambers R-28 thermal
What you're buying
Premium Finish Layer
Hardwood or marble aesthetic, factory-applied, builder-ready
Gel-Cushion Chambers
Absorb impact, reduce sound, add thermal mass
Radiant Heat Matrix
Hydronic tubing integrated into structural panel — no on-site routing
Structural Core
1-1/8" engineered panel — replaces standard subfloor, no additional structure needed

No separate heating system. No separate underlayment. No separate finish floor. One unit.

Why builders choose ThermaSlab

Three systems. One step.

Structural Subfloor

Replaces standard OSB or plywood subfloor. No additional structural work required. Install once, done.

Built-in Radiant Heat

Hydronic tubing pre-routed in the panel. Connect to your boiler or heat pump, zone by zone. No messy staple-up, no aluminum plates.

Gel-Cushion Chambers

Absorb impact, reduce footfall noise, add thermal inertia. Better acoustics in multifamily. More comfort in residential.

Premium Finish Surface

Hardwood or marble finish applied at the factory. No on-site finish work. No sanding, no sealer, no wait time.

vs. the alternatives

Stop cobbling together five products.

Standard subfloor
Warmboard / HeatPly
ThermaSlab
Structural subfloor
yes
yes
yes
Radiant heating integrated
no
yes
yes
Gel-cushion / impact absorption
no
no
yes
Premium finish surface
no
no
yes
Single-unit installation
yes
no
yes
Fewer trades on site
partial
partial
yes
1-1/8"
Panel thickness
24" x 48"
Standard dimensions
16" OC
joist spacing
$28–52
per sq ft, depending on finish
Hydronic
heat system
Wood / Marble
finish options
Why we exist
The floor is the most underutilized surface in a building. It holds everything. It touches every room. And in new construction, it's still just plywood and hope.

ThermaSlab was built to change that. A single panel that replaces your subfloor, your radiant heating system, your underlayment, and your finish floor. Fewer decisions on the job site. Fewer failed handoffs between trades. A better result for everyone.

We sell to builders, wholesalers, and distribution partners who want a product that ships right, installs fast, and makes their buyers happy.