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Can Arista Be Installed Over Radiant Heat?

Yes, Arista works with in-floor radiant heat, as long as the subfloor surface never exceeds 85°F. Here’s what works, what doesn’t, and how to time the install.

What Works (and What Doesn’t)

  • In-floor Radiant Heat(embedded in subfloor): Compatible, surface temp must stay ≤85°F
  • Gypsum-based subfloors w/ Radiant Heat: Compatible, 85°F ceiling still applies
  • Concrete Slabs w/ Radiant Heat: Compatible, requires 6 mil poly moisture barrier
  • Loose Electric Heating Mats(not embedded in subfloor): Not recommended, can void the warranty

 

Temperature & Timing
  • Hard temperature ceiling: ≤85°F at any point on the subfloor surface
  • 24 hours before install: Drop floor temp to ≤70°F and hold
  • During install: Keep floor temp at ≤70°F
  • 48 hours after install: Hold at ≤70°F
  • After 48 hours: Gradually increase to desired setting, never above 85°F
  • New systems: Run 48+ hours before install to let the system stabilize

Use an in-floor temperature sensor to prevent overheating. If the radiant system is brand new, run it for at least 48 hours before install, new systems can spike on first use, and that should happen before the planks go down 

Concrete Slabs with Radiant Heat

  1. Run the heating system first to drive out residual slab moisture.

  2. Verify moisture levels: ≤5.0 lbs per 1,000 sq ft per 24 hours, RH ≤75%.

  3. Lay a 6 mil poly moisture barrier between the slab and Arista, tape all seams with moisture barrier tape. 

  4. Drop floor temp to ≤70°F before install and hold through the 48-hour post-install window.

 

Climate Control Before & After Installation

Maintain the install area at 65°–85°F and 40–70% RH before, during, and after install. This ensures neighboring materials are at their long-term dimensions when the planks go down.

What to Avoid

  • Don’t exceed 85°F at the floor surface. Set your sensor cap accordingly.

  • Don’t install on day one of a new system. Run it 48+ hours first.

  • Don’t use loose electric mats. Have them embedded in the subfloor first.

  • Don’t skip taping the poly seams on concrete. Untaped seams let moisture through.

For full installation details, see the Arista Installation Instructions.

 

Common Questions

What if my system can reach above 85°F?

That’s fine, as long as the in-floor sensor caps the surface at 85°F. The system’s capability doesn’t matter, the sensor limit does.

 

Questions? Email support@flooret.com or call 1-800-700-8122.