Underlayment for Heated Floors

Underlayments reduce heat loss and protect fragile flooring like tile, marble, or stone. WarmlyYours offers Prodeso Cable Installation Membrane and ThermalSheet to maximize efficiency and protect your floor investment.

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Typical bathrooms: 40–60; kitchens: 100–200

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Underlayment Solutions

ThermalSheet Insulating Underlayment

4.80

Based on 10 reviews

Maximize floor heating efficiency effortlessly

ThermalSheet Insulating Underlayment enhances your electric floor heating system by preventing heat loss, thus increasing energy efficiency. Designed specifically for use over concrete slabs, it provides superior sound dampening and crack isolation benefits. Lightweight and durable, ThermalSheet supports a variety of floor coverings, ensuring a stable and moisture-resistant base for your heated floors.

Features

Heat and cold resistant, and will not rot, support mold and mildew, or absorb moisture
Stable and durable, remaining unchanged after repeated impact loads
ThermalSheet has a 1.5 R-value, and it offers crack isolation of up to 1/4”
This lightweight insulating underlayment will increase the energy efficiency of your floor heating system
Can be used under a wide range of floor coverings like tile, stone, LVT, and laminate and can be used over any acceptable subfloor

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Prodeso Membrane Roll 54 sq.ft. (3.3 ft. x 16.4 ft.) TC-MEM-BL-054

Prodeso Cable Installation Membrane

4.94

Based on 89 reviews

Effortless warmth with quick, reliable installation

The Prodeso Cable Installation Membrane simplifies your radiant floor heating projects, enabling most installations to be completed in a single day. Its unique design securely holds TempZone Heating Cable, ensuring consistent spacing. With uncoupling and crack isolation benefits, it extends the longevity of your tile, marble, or stone floors. Plus, it's waterproof-ready for areas like kitchens and bathrooms.

Features

Complete installations in a day
Holds TempZone Cable securely
Prevents cracks and extends floor life
Waterproof with ProBand accessories
Low profile for minimal height increase

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Underlayment Projects

See how real homeowners used Prodeso membrane and ThermalSheet underlayment in their radiant floor heating projects.

Floor Heating Underlayment Videos

Underlayment Customer Reviews

Rated 4.8/5 based on 10 reviews

We take pride in providing both exceptional service and great products. But don't just take our word for it, check out what some of our customers have had to say.

This pad has just enough supportive squish and thickness to help with 1/32 inch variations in subfloor, by my estimation.

It's comparable in function and probably insulative break to a quarter inch roll of natural cork. The two foot by 3 ft pieces fit together well, I taped some of the seams to aid in installation. Cutting with a razor knife or heavy duty scissors is very easy. I think this underlayment really facilitated the use of the warmly yours radiant heat mat on top. I appreciate that it provides a thermal break between the wires and the subfloor, and help radiate the heat upwards through the finished floor.

Io D.

Golden · Verified
The ThermalSheet underlayment is a quality product that worked great with our 3x6 warming mat installation.

O

Orrin S.

Denver · Verified
100% SATISFIED AS ALWAYS WITH WARMLY YOURS.

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Power F.

Old Bridge · Verified
Great to deal with!

Made everything super easy and transparent and easy to understand.

M

Mike C.

Basalt · Verified
We have just used our new shower for the first time and we are thrilled to have toasty feet when we step into this beautiful enclosure.

This is the 3rd time we have installed your product and although I hope to never move again - I will be recommending your product to all my friends and family.

K

Kathie S.

Scottsdale · Verified
Was unsure but it was a small area and decided to proceed.

No regrets what so ever. Love the warmth radiating from the tile floors! The installation was somewhat of a challenge for my inexperienced husband. But installed now….no looking back!

C

Charlene H.

Knoxville · Verified
I needed an easy heat source for a small bathroom, and chose in-floor heating from WarmlyYours.

I have no experience with in floor heat, so I was very happy with the customer service I received, they were quick to answer my questions and I felt very 'looked after' with my purchase. I'm happy with my purchase, and it has been working great!

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Pam G.

Calgary · Verified
We had ordered the original version of this product and our project got delayed.

When we went to finally complete the floor, we found we needed more. We could not find the exact same item we originally ordered so ordered this instead and the specs showed the thickness as the same. When it arrived and we installed it, we found it was slightly thicker. If a person was using tile, it wouldn’t have been an issue as the thinset would have evened it out. As we were using laminate vinyl tile, we had to use a self leveling mixture first before we could put our flooring down. Just something to watch out for.

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Lanny M.

Slave Lake · Verified