WarmlyYours TempZone Floor Heating Cable (Twin) - Manual (Page 20)

Installation and Operation SECTION 5
5.5.4 Instructions for Installation Under Tile and Stone Flooring
Option 1: Single-layer method for tile and stone
Apply a layer of 3/8 inch latex-modified thinset cement or self-leveling underlayment (SLU) over the heating cable. Lay the
tile or stone directly into that layer of thinset cement.
OR
Option 2: Double-layer method for tile and stone
Embed the heating cable in a skim coat of latex-modified thinset or self-leveling underlayment, completely covering the
heating element and the sensor wire. Apply a second layer of thinset and lay tiles as usual. The recommended depth for
both layers of thinset or SLU is 3/8 inch.
The single-layer method is used most by experienced installers in small applications with easy access. WarmlyYours does
NOT recommend the single-layer method for installing mosaics or tiles of different sizes or if you have not installed an
electric radiant heating system under tile or stone before.
Waiting Period: Regardless of method used, installation of floor heating cable under tile or stone requires 2 to 28 days
for the latex-modified thinset or self-leveling underlayment to cure. Follow manufacturer recommendations for cure times
applicable to your installation.
IMPORTANT: Do NOT turn on the WarmlyYours TempZone™ Floor Heating Cable (Twin) system until after the
thinset or self-leveling underlayment (SLU) has fully cured. Doing so will result in damage to the system
and cause the thinset or SLU to become brittle. Failure of the thinset or SLU may cause damage to the
embedded cable. This type of damage is not covered by the WarmlyYours warranty.
5.5.5 Instructions for Installation Under Carpet (U.S. only), Vinyl, or
Laminated Flooring
Before applying SLU, ensure that the cable is firmly secured to the subfloor to prevent it from floating to the top of the self-
leveling underlayment. Attach Circuit Check™ or PowerMan™ at this time. Cover cable with 3/8 inch layer of self-leveling
underlayment.
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