The five objections most likely to block a builder or ABC Supply rep from moving forward — answered with the numbers from our comparison sheet, install guide, and pilot data.
The installed cost runs $28–$42/ft² for ThermaSlab — vs. epoxy at $8–$15/ft² overlay, tile at $20–$45/ft² incl. substrate, and stamped concrete at $12–$25/ft² overlay on slab (/contractor-comparison).
The parity pitch is against tile plus a separate underfloor heating retrofit: one ThermaSlab panel replaces four stacked scopes (subfloor + hydronic + underlayment + finish), so total project cost lands lower even when the per-ft² surface number looks higher than bare epoxy. Real-world anchor: the Timberstone install in Marin ran 4 days vs. a 9-day conventional baseline — the labor savings alone covered most of the delta (/contractor-results).
The published panel numbers are what an AHJ will ask for: heat output 30–40 BTU/hr·ft², R-value R-2.5–4.0 assembly, live load 40 psf structural, and a single-assembly warranty rather than per-component warranties you have to coordinate across material suppliers.
Every order ships with an ICC-ES-style documentation packet — the contractor /spec-sheet and the downloadable thermaslab-contractor-spec.pdf carry the values an inspector will need. Energy-code compliance runs through the assembly's R-value plus the radiant delivery model; the assembly clears the same code path a hydronic panel retrofit does, just consolidated into a single listed product.
Substrate tolerance is ≤ 3/16″ over any 10 ft span — shim or plane the deck if it's out of tolerance, but that's a standard panel-lay prep step, not a ThermaSlab-specific extra. Fastener spec is the same as a conventional subfloor lay: structural screws or ring-shank nails, 6″ OC perimeter, 8″ OC field, countersunk 1/4″ (/contractor-guide).
On a 500 ft² slab, the benchmark is ~6 hrs (~0.7 min/ft²) for panel lay + connect. Real-world anchors: the Mariposa Loft ADU in Austin finished in 1.5 days install + protection, and Timberstone ran 4 days on a 3,200 ft² first-floor scope (/contractor-results). Single-trade install removes the trade-coordination risk that comes with separate subfloor + hydronic + finish contracts.
The warranty is a single-assembly warranty: one panel-and-loop assembly, not four stacked materials. There's no separate subfloor warranty, heating-element warranty, or finish warranty to manage — because there are no separate components to fail apart.
The maintenance cycle is a finish-refinish every 15–20 years, same as a high-end prefinished hardwood floor — and the structural service life runs well past the finish cycle because there is no boiler, no mechanical pump, and no elements buried in the floor that can fail out from under you. Full warranty language ships with the pilot-onboarding packet; start at /pilot-program or /contractor-onboard.
Typical lead time is 4–6 weeks once specs are confirmed — that's the production-side window we've held for first orders to date.
The pilot program is currently limited to a small batch of installers per quarter; projects in the 500–5,000 sq ft range with a target install date inside the next 6 months get priority scheduling. Apply at /pilot-program for a slot in the next batch, or reach out to /distribution if you want forecasted stock held at a regional depot for a known pipeline (/contractor-onboard for full onboarding).