Therma-Floor is a gypsum underlayment designed by Maxxon^® Corporation specifically for radiant floor heating systems. Poured over hot water tubes or electric heating cables, it's the ideal thermal mass for any radiant floor system.

Therma-Floor encases the tubes or cables in crack-resistant, noncombustible gypsum, specially formulated to resist breakdown to 150º F (66º C). Poured only 1-1/4" (32mm) thick, Therma-Floor also makes your heating system more responsive — and your home more comfortable.

Some radiant systems install under plywood subfloors. But plywood is nearly 4 times more insulative than Therma-Floor, resulting in lost heat. Therma-Floor does its work above the subfloor, for greater efficiency and consistent comfort.

Why a radiant floor heating system isn't complete without Therma-Floor:

• Resists heat deterioration — it's formulated specifically for radiant floor heating.
• Enhances heating system responsiveness due to its thin thermal mass.
• Provides a smooth, tough surface.
• Stiffens the floor and won't shrink crack.
• Seals perimeter walls, keeping out baseboard drafts.
• Eliminates squeaks and nail pops common to wood underlayments.
• Muffles sound transfer.
• Backed by a nationwide applicator network with over three billion square feet of experience.
• Accepts virtually all floor coverings.
• Contains no urea formaldehyde.