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Stelpro > Heating cable systems > Heating floor systems > HGSMD

Uncoupling Membrane

Floor heating systems have well-known advantages, but the uncoupling membrane is game-changing

HGSMD

An uncoupling membrane has become a must-have to make heating cable installation easier. Its key purpose is to cut down on movement between the various materials used in a complete installation. The uncoupling membrane compensates for horizontal movements up to 1/8 in. which in turn protects tiles from cracking and delamination. Best of all, installing the heating cable is a snap!

Advantages

Easy heating cable installation
Protects tiles from cracking and delamination
More uniform transitionWith adjacent non-heated floor covering
Can replace the underlayment required for tiling
Subfloor vapour management
Uniform load distribution
Heating cable and tile installationWithout drying delay time

Ideal for

Basement
Bathroom
Bedroom
Corridor
Kitchen
Living room

MANUFACTURING

Entirely made of polypropylene
Rounded square studs for easy heating cable installation
3 rounded square studs spacing of 3 ¾ in. for optimal heat distribution and coverage
Thermo welded woven back to increase the bond between the subfloor and membrane.
Colour: blue
Height of ¼ in. (5.5 mm)
Available in 53.8 ft² and 161 ft² rolls
Available in 8.9 ft² sheets

COMPATIBLE FLOORINGS

Ceramic, porcelain, stone, vinyl, laminated engineered wood
Soft and wood floorings must be installed on a self-leveling underlayment layer of ½ in. on top of the studs.

INSTALLATION

Modified and non-modified mortars can be used as per mortar manufacturer recommendations
Installation over plywood, OSB, concrete, gypsum base and existing vinyl
Installation possible directly over the subfloor (limitations apply)
The membrane does not replace the need for movement joints
Heating cable and tile installation without drying delay time

WARRANTY

Twenty-five years

SpecsheetDownload the product specsheet containing product specs and other useful information

Installation guideDownload the product installation guide

Code	Description	Width	Length	Surface area covered
Code	Description	in	ft	ft²
HGSMDF	Uncoupling membrane sheet 8.9 ft²	39	2.75	8.9
HGSMD054	Uncoupling membrane roll 54 ft²	39	16.4	54
HGSMD162	Uncoupling membrane roll 162 ft²	39	49.5	162

Compatibility

WOOD STRUCTURE REQUIREMENTS AND LIMITATIONS
JOIST SPACING	2^nd SHEET OF POLYWOOD/OSB NECESSARY?		Minimum plywood/OSB subfloor thickness
JOIST SPACING	Ceramic / porcelain	Natural Stone	Minimum plywood/OSB subfloor thickness
16 in	No	Yes*	5/8 in nominal
19,2 in	No	Yes*	3/4 in nominal
24 in	Yes*	Yes*	3/4 in nominal

Minimum tile size 1 in. x 2 in.
* Minimum thickness of underlayment: 3/8 in.

UNCOUPLING MEMBRANE INSTALLATION
SUBFLOOR	TILE MORTAR*	ANSI STANDARD
Plywood	Polymer modified mortar	A118.11
OSB	Polymer modified mortar	A118.11
Concrete	Polymer modified mortar	A118.11
Gypsum underlayment	Unmodified mortar	A118.1
Existing vinyl	Fast setting polymer modified mortar	A118.4, A118.15

* Validate the compatibility with the mortar manufacturer.
For any other subfloor, contact customer service.

TILE INSTALLATION OVER UNCOUPLING MEMBRANE
CERAMIC, PORCELAIN, NATURAL STONE
MORTAR TYPE*	ANSI STANDARD
Polymer modified mortar	A118.11
Unmodified mortar	A118.1

* Validate the compatibility with the mortar manufacturer.

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Uncoupling Membrane

Floor heating systems have well-known advantages, but the uncoupling membrane is game-changing