How To Cut QuietWarmth Tile Mats

The QuietWarmth Peel and Stick radiant heat film for traditional tile can be cut to length, but only between the black heating stripes. The white membrane adhered to the film acts as a watertight barrier protecting the mat from moisture. However, right out of the box, the mat itself is not waterproof. This doesn’t mean the mats are suitable for wet areas like shower floors—it simply means the membrane provides moisture resistance from adhesives or mortar used for tile or floor coverings.
The mats are intentionally left “unsealed” at the factory to allow easy cutting before turning them into a moisture-tight membrane.

How to Cut the Mat Properly:

Cut Between Black Heating Stripes:

Always cut only between the black heating stripes. Cutting into a black stripe will damage the mat and may cause GFCI tripping at the thermostat.

Deaden the Last Black Stripe:

To create a proper moisture seal, cut back one black heating stripe from both sides of the panel. This step deactivates the last stripe and ensures the mat is fully encased in the membrane. Be careful not to cut into the second black stripe

Use Insulating Disks for Electrical Safety:

Each mat comes with two colored insulating disks. Fold these over the ends of the silver bus bars on both sides to cover them completely and prevent electrical leakage.

Seal the Edges to Create a Moisture-Tight Barrier:

Whether you cut the mat or not, the final step is to seal the edges. Peel back the bottom release liner on the inside flap, press down firmly to adhere the heating element, then carefully peel back the upper release liner and press down to seal the membrane edges. Make sure to press out any air bubbles during this process. Repeat on both sides of the mat.

After completing these steps, the mat is ready to be installed according to the rest of the product instructions.

Summary: The Three Key Steps to Cutting QuietWarmth Peel and Stick Radiant Heat Film

Cut between the black heating stripes
Deaden the last black stripe with the insulated cut-back bar
Seal the membrane by removing the release liners and pressing down firmly