It does not matter. Provided that the manufacturer of the flooring products (coverings, adhesives, etc.) says they are compatible with floor-heating systems (always defer to the floor-covering manufacturer’s instructions), the installation is UL-approved.
Installation of Mapeheat Membrane below luxury vinyl flooring follows the same installation method as engineered and laminate floors: First, embed the floor-heating system within cementitious material, ensuring in 1/4" (6 mm) of coverage above the heating system. Either a mortar or self-leveling compound can be used, but achieving the desired flatness is easiest with a self-leveling underlayment. Proceed with installing the floor covering on top, following the manufacturer’s instructions.
The following example illustrates this process, with Keraflex Super thin-set mortar, a 1/4" x
1/4" x 1/4" (6 x 6 x 6 mm) trowel for installing
Mapeheat Membrane, plus filling the
membrane and installing the tiles with a
1/2" x 1/2" x 1/2" (12 x 12 x 12 mm) trowel.*
In this example the total floorspace requiring
coverage is 250 square feet (23.2 m2). To
determine how many bags of Keraflex Super is needed to install tile over Mapeheat
Membrane, we need to add the amounts from three separate calculations:
a) Installation of Mapeheat Membrane with a 1/4" x 1/4" x 1/4" (6 x 6 x 6 mm) trowel (with Keraflex Super):
At the per-bag minimum coverage of 100 sq. ft. (9.29 m2),
b) Filling of Mapeheat Membrane (with Keraflex Super)
At the per-bag minimum coverage of 60 sq. ft. (5.57 m2),
c) Installation of tiles (with Keraflex Super)
At the per-bag minimum coverage of 50 sq. ft. (4.65 m2),
Total = 12 bags of Keraflex Super
For additional helpful tips and product information, visit www.mapei.ca or contact MAPEI’s Technical Services Product Support Team.
* Note that the amounts of coverage for each recommended trowel are available on the Technical Data Sheets of MAPEI's thin-set mortars.
When going over membranes, check the Technical Data Sheet of the thin-set mortar for proper water ratios, as
additional water may be required.
Keep in touchSubscribe to our newsletter to get Mapei news
