Standard Residential Configuration · 16" OC Hydronic · Tongue & Groove
| Panel dimensions | 24" × 48" (610 × 1219 mm) |
| Panel thickness | 1-1/8" (28.6 mm) |
| Edge profile | Tongue & Groove (T&G), 4 sides |
| Structural core | MR30 HDF or marine-grade plywood |
| Core thickness | 7/8" (22.2 mm) |
| Finish top layer | Prefinished engineered hardwood (oak), 3mm wear layer |
| Surface area | 8 sq ft per panel |
| Weight (estimated) | ~22 lbs per panel |
| Tubing type | 3/8" PEX-A or PEX-B |
| Tubing spacing (OC) | 12" on-center |
| Tubing runs | 2 parallel runs per panel (24" direction) |
| Heat transfer plates | Aluminum plate under each run, 0.016" min thickness |
| Flow/return connections | Manifold — not terminated in panel |
| Zone configuration | Single-zone per panel; multi-panel manifolds for zones |
| System pressure | Design for 60 psi working pressure |
| Compatible heat sources | Boiler, heat pump water heater, solar thermal |
| Chamber rows | 2 rows between PEX runs |
| Gel fill | Non-toxic, phase-change material (PCM) or viscoelastic polymer |
| Purpose | Impact absorption, sound attenuation, thermal mass |
| Chamber height | Approx. 3/8" cavity between finish and core |
| Sound reduction (IIC) | Target: IIC ≥ 52 (with finish floor) |
| Thermal mass add | +15–20 min heat storage lag vs. bare tube |
| Joist spacing | 16" OC (standard residential) |
| Live load rating | 40 psf minimum (per IRC / IBC) |
| Deflection limit | L/360 under live load |
| Span capability | Single span only; not approved for cantilever |
| Fastening | Screws or nails, 6" OC at edges, 8" OC field |
| Subfloor replacement | Direct replacement for 3/4" OSB or plywood subfloor |
| T&G joint | Glued + screwed at joints; sealant in T&G channel |
| R-value (panel only) | R-0.75 approx. (HDF core) |
| Assembly R-value (floor) | R-2.5 to R-4.0 depending on joist cavity insulation |
| Finish layer R | R-0.09 (oak, 3mm) |
| Effective loop length | ~44 lineal feet per panel (2 × 22 ft runs) |
| Water content per panel | ~0.6 gallons (tubing volume at 3/8" PEX) |
| Heat output (typical) | ~30–40 BTU/hr/ft² at 110°F supply, 70°F room |
| Thermal response | Gel adds 15–20 min delay; aluminum plate speeds initial ramp |
| Core material spec | MR30 HDF: density ≥ 50 lbs/ft³, thickness tolerance ±0.3mm |
| PEX tubing spec | ASTM F876/F877, oxygen-barrier rated (EVOH) preferred |
| Aluminum plate spec | 3003-H14 or equivalent, 0.016"–0.025" thick |
| Moisture resistance | Core: interior-grade MR30; marine ply option for wet locations |
| Fire rating | Pending — flame spread test required (ASTM E84) |
| Architect spec path | NOA (Miami-Dade) or ICC-ES Evaluation Report |
| Building code ref | IBC Chapter 25, IRC Chapter 44 (radiant floor) |
| Indoor air quality | CARB Phase 2 / TSCA Title VI compliant for HDF |
| Cost Line | Estimated/unit | Notes |
|---|---|---|
| MR30 HDF core (7/8") | $7.50 | Based on current HDF sheet pricing at 1,000 panels |
| PEX tubing + aluminum plates | $4.00 | Factory-preloaded, per panel allocation |
| Gel chamber fill + mold | $3.00 | Viscoelastic polymer; amortized tooling |
| Prefinished oak top (3mm) | $5.50 | Engineered; prefinished at mill |
| T&G machining + edge prep | $2.50 | 4-side profiling in one pass |
| Lamination & press | $3.00 | Hot-press lamination of top layer |
| QA, packaging, freight | $3.00 | Final inspection, pallet-pack, delivery to DC |
| Total estimated cost | $28.50 / sq ft | Target range: $28–35 / sq ft |
Pricing is directional. Final cost depends on manufacturer relationships, order volume, and material market conditions. Target margin: 20–35% at $35–45/sqft MSRP.