Factory-built 24×48" panels with ½" PEX radiant tubing pre-routed and gel-cushion isolation pre-installed. Choose from 8 factory-applied finish options. Ship to site, drop into framing, connect to manifold.
Tell us about your project — we'll follow up within one business day.
Tested dimensions, output ratings, and material specs for architect and builder validation.
| Panel dimensions | 48" × 96" × 4.5" |
| Panel thickness | 1-1/8" nominal |
| Joist spacing | 16" on-center |
| Load rating | 2,000 psf (structural subfloor) |
| Core material | EPS structural foam |
| Finish surface | Hardwood / marble factory-applied |
| Heat type | Hydronic radiant |
| PEX tube size | ⅜" OD, 16" centerline spacing |
| BTU output | 55–75 BTU/hr·ft² |
| Max fluid temp | 130°F |
| Manifold connection | 3/4" PEX trunk |
| Compatible sources | Boiler, heat pump water heater |
| R-value | R-28 |
| Gel-cushion chambers | 40 psi rated |
| Impact isolation | Gel-matrix chambers |
| Acoustic benefit | Reduced footfall, muffled ambient |
| Structural core | EPS foam, 1.5 lb/ft³ density |
| Tubing | PEX-a (oxygen-barrier) |
| Cushion layer | Elastomeric gel (closed-cell) |
| Finish layer | Porcelain / LVT / hardwood |
A directional estimate of annual energy savings vs. traditional radiant heat. Use the numbers to frame the spec conversation — final figures depend on climate, insulation, and rate plan.
ThermaSlab panels are currently in pilot production. We're working with a limited number of contractors and design teams on specification, first-install feedback, and early pricing.
"The panel went down in a single afternoon. By the next morning we had radiant heat running and the crew was already laying finish flooring. In 22 years of building, I've never seen a subfloor cut installation time that dramatically."
Four elements stacked into one panel. The on-screen script and the short video investors will share, in one place.
→ Watch the video"First builder to spec ThermaSlab gets 3 days back on a typical 2-story — no coordination calls, no on-site radiant routing."
"First builder to spec ThermaSlab gets a subfloor and radiant system that passes inspection the first time — no callbacks, no rework."
No separate heating system. No separate underlayment. No separate finish floor. One unit.
Replaces standard OSB or plywood subfloor. No additional structural work required. Install once, done.
Hydronic tubing pre-routed in the panel. Connect to your boiler or heat pump, zone by zone. No messy staple-up, no aluminum plates.
Absorb impact, reduce footfall noise, add thermal inertia. Better acoustics in multifamily. More comfort in residential.
Hardwood or marble finish applied at the factory. No on-site finish work. No sanding, no sealer, no wait time.
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.