IOM-WR-TapeMat 1526
18 of 32
Type of Construction
Mortar Applications:
Thin-set and thick-set (self-leveling) mortar applications are illustrated below and to the right.
a. If a backer board or plywood sheeting is used to strengthen the floor, or if the mat will
be placed directly onto the slab, install TapeMat in the thin-set mortar bond coat above
these materials.
b. If a thicker mortar bed, or self-leveling concrete, is used to strengthen the floor, TapeMat
can be installed in either the mortar bed (dry-set) or in the mortar bond coat directly below
the tile or stone.
TapeMat is generally installed above the self-leveling mortar in a thin-set bond coat. Use plastic
lath instead of the typical metal lath when installing in a self-leveling layer.
Self-leveling Mortar Applications:
These are appropriate applications if installing engineered wood, vinyl, laminate, or carpet
floor coverings. Attach the TapeMat to the subfloor or slab, then pour self-leveling mortar
1/4” to 1/2” thick according to manufacturer’s specifications. Fully embed the heating wire
and splices so that no portion of these show. Install floor covering after the mortar has cured.
Special Precautions
Isolation Membrane:
Install the TapeMat above the membrane, whenever possible, unless
recommended otherwise by the membrane manufacturer.
Insulation:
Insulation dramatically enhances the performance and efficiency of floor-warming
systems. Do not install rigid insulation directly above or below backer board or mortar.
Mosaic Tile:
When installing mosaic tile, it is recommended to apply a two-step process.
First, embed the Mat in a thin self-level mortar bed (1/4"–3/8"), then thin-set the mosaic tile
according to typical practice.
Expansion Joints:
Do not install heating mats through an expansion joint. Install mats right
up to the joint, if necessary, but not through the joint.
DOUBLE-PLYWOOD OVER FRAME FLOOR
Tile/stone or
laminate flooring
TapeMat
Plywood
Main Plywood Subfloor
Latex-Portland cement
mortar bond coat
Insulation
(per International Residential
Code, Chapter 11)
Never bang a trowel on the Heating Wire to remove excess mortar from the trowel. This
could damage the heating wire.
