Installation Guide
5
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Preparing the suboor
Clean the suboor thoroughly. Ensure that there are no nails, screws or any other elements
which can damage the heating cable when laid on the oor.
Verify that the suboor structure meets the required standards if using plastic cable guides
or an Uncoupling Membrane.
The surface must meet all construction standards relevant to the coating and the use of
a oor heating system. Check with the manufacturer for compliance with a oor heating
system.
Check that the surface is compatible with the mortar or self-levelling mortar set that will be
used during installation.
SELF-LEVELING
Refer to the installation guide for the DrexMat uncoupling membrane from WarmAll.
1. It is recommended to level the oor surface before installing the uncoupling membrane.
2. Use a recommended thin-set mortar to x the uncoupling membrane to the sub-oor
(MAPEI LHT or equivalent).
3. Respect the drying time of the thin-set mortar used to x the membrane to the sub-oor
before putting the self-leveling compound on the uncoupling membrane.
4. Only the “Standard” release membrane (white ber fabrics underneath) is permitted
with the use of a self-leveling compound (MAPEI Ultraplan 1 Plus or Novoplan 2 Plus or
equivalent).
5. A minimum of 3/8" (inch) is required above the uncoupling membrane for the installation
of exible covering (engineered wood, laminated wood, linoleum).
Sub-oor compatibility with cable
- Plywood;
- Cement panels;
- Concrete slabs;
- Concrete slabs on an existing oor;
- Existing ceramic: consult the manufacturer of the cement or membrane to properly
prepare the suboor;
- Acoustic Membrane: consult the cement or membrane manufacturer to properly prepare
the suboor;
- Uncoupling Membrane: consult membrane, suboor, cement manufacturers to properly
prepare the suboor;
- Anti-fracture Membrane: consult the cement manufacturer to properly prepare the
suboor correctly.
General information