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SunTouch WarmWire HeatMatrix Uncoupling Membrane
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At a Glance
Quick Decision Guide
Coverage
40 Sq. Ft.
Roll Size
3' 3" × 12' 3"
Thickness
0.24" (6 mm)
Material
Polypropylene
Heating Cable
SunTouch WarmWire
Standard Cable Spacing
Approximately 3"
Waterproofing
Yes
Below-Grade Use
Yes
Why Choose This Product
Key Benefits
Faster Cable Installation
Raised shapes secure WarmWire without separate fastening
Uncoupling Protection
Reduces stress transferred from substrate movement to tile
Crack Isolation
Helps protect tile installations from substrate cracking
Vapor Management
Channels allow moisture and vapor pressure to dissipate
Waterproofing
Provides a barrier against surface water when properly installed
Adjustable Heat Output
Cable spacing can be varied to accommodate heating requirements
Product Information
Product Details
Specifications
Brand
SunTouch®
Part Number
81019455
UPC
840213211011
Product Type
Uncoupling Membrane
Model
8006GRY40-ST
Coverage
40 Sq. Ft.
Dimensions
3' 3" × 12' 3"
Material
Polypropylene
Thickness
0.24" (6 mm)
Heating Cable Compatibility
SunTouch WarmWire®
Standard Cable Spacing
Approximately 3" (76 mm)
Functions
Uncoupling, Crack Isolation, Waterproofing & Vapor Management
Below-Grade Installation
Yes
Working Temperature
14°F to 140°F (-10°C to 60°C)
ANSI Standard
ANSI A118.12
Warranty
10-Year Membrane Warranty
About This Product
Uncoupling Membrane for WarmWire Floor Heating
SunTouch® WarmWire® HeatMatrix® is a polypropylene uncoupling membrane designed to simplify the installation of WarmWire electric floor heating cables beneath tile. Raised shapes secure the heating cable at approximately 3" increments while allowing spacing to be adjusted for different heating requirements.
Crack Isolation and Substrate Movement Protection
A non-woven fleece layer on the underside of the membrane helps reduce shear stress caused by lateral and multi-directional substrate movement, minimizing stress transferred to the tile installation. HeatMatrix meets ANSI A118.12 requirements for substrate crack isolation, uncoupling, point load, and mold resistance.
Waterproofing and Vapor Management
HeatMatrix provides a barrier against surface water while channels beneath the membrane allow moisture and vapor pressure to dissipate. This vapor management makes the membrane suitable for below-grade installations over concrete. In areas exposed to surface water, membrane joints should be sealed with HeatMatrix joint strip.
Adjustable WarmWire Cable Spacing
WarmWire can be installed at the standard spacing of approximately 3" or adjusted to change heat output. Cable spacing can alternate between 2 and 3 raised shapes for higher heat output or between 3 and 4 shapes for lower output, providing flexibility based on the heating requirements of the installation.
Common Questions
Frequently Asked Questions
What is SunTouch WarmWire HeatMatrix used for?
HeatMatrix is an uncoupling membrane used to install SunTouch WarmWire electric floor heating cables beneath tile while providing crack isolation, waterproofing, and vapor management.
How is WarmWire spaced in the HeatMatrix membrane?
The membrane secures WarmWire at approximately 3" spacing. The cable can also alternate between 2 and 3 raised shapes for higher heat output or between 3 and 4 shapes for lower output.
Can HeatMatrix be installed below grade?
Yes. Channels beneath the membrane allow moisture and vapor pressure to dissipate, making HeatMatrix suitable for below-grade installations over concrete.
Is SunTouch HeatMatrix waterproof?
Yes. The membrane provides a barrier against surface water. In areas exposed to surface water, HeatMatrix joints should be sealed with HeatMatrix joint strip.
How does HeatMatrix help prevent cracked tile?
The non-woven fleece layer helps reduce shear stress transferred from lateral and multi-directional movement in the substrate to the tile installation.
Does HeatMatrix meet ANSI A118.12 requirements?
Yes. HeatMatrix meets ANSI A118.12 requirements for uncoupling, substrate crack isolation, point load, and mold resistance.