WarmlyYours TempZone Custom Mat - Manual (Page 7)

2) Waterproofi ng Membrane
Use WarmlyYours mats in conjunction with membranes that, as a minimum, meet American National Standard for Load
Bearing, Bonded, Waterproof Membranes for Thin-Set Ceramic Tile and Dimension Stone Installations (ANSI A118.10)
and are suitable for the intended application.
Before starting, read the waterproofi ng membrane manufacturer’s installation instructions and the tile fl ooring
manufacturer’s installation instructions. Review any specifi c instructions either may have with regard to the use
of their products with electric radiant heating.
The MAT, consisting of HEATING WIRE, SPLICE CONNECTIONS and COLD LEADS, as well as any THERMOSTAT
SENSOR, must be FULLY COVERED by a waterproofi ng membrane when in wet locations.
After the mat is secured in the fi rst layer of mortar, apply a second layer of mortar (minimum 1/4” x 3/16” V-notched trowel
or a 1/8” x 1/8” square-notched trowel) to secure the waterproofi ng membrane. The mat, and any extending cold leads
must be fully embedded in this covering layer of mortar.
IMPORTANT
The mats must be installed on a GFCI (personnel protection, 5 milliamp trip level) protected circuit. If a thermostat
employing a fl oor sensing bulb is to be used, the fl oor sensor must be installed prior to installing the waterproofi ng
membrane. Secure the sensor probe on top of the mat with tape or hot glue. The sensor must be positioned in the middle
of two heating cable runs. The sensor should be 6” from the edge of the mat and must be covered by the waterproofi ng
membrane. Run the sensor wire back into the junction box. If using conduit, do not run the sensor wire in the same
conduit as the cold lead.
After the mat is secured beneath the waterproofi ng membrane, install tile on top as per the manufacturer’s recommended
method.
Clean grout lines carefully, scrapers can penetrate and cut into the heating mat below possibly resulting in death or
injury from electrical shock or fi re, mat failure, improper operation or fl oor damage.
Do not drill into fl oors with WarmlyYours mats; drills can cut into the heating mat below possibly resulting in death or
injury from electrical shock or fi re, mat failure, improper operation or fl oor damage.
Conduct electrical tests as previously described, if there are any problems contact WarmlyYours before proceeding
further.
Thinset and grout materials have cure times, review the recommended cure time from each manufacturer and do not
energize the mat until the materials have fully cured. This cure time may be as long as 28 days.
6”