The Warmup® In-slab Heating Cable is designed to be placed within the cementitious
slab of at least 2” (50mm) in thickness, with at least 1¹/₈” (30mm) of slab above the
heating wire. Depending on the construction of the subfloor, you may need to use
additional insulation with your installation.
Prepare floor plan of the area requiring the slab heating system & note the area to be
heated. It is advised that a floor plan is drawn up to determine
the placement of the thermostat, heating cable and
the sensor probe. This diagram should be kept for
The fixing strips should be laid out perpendicular to
the heating cable runs. These fixing strips must be
secured to the insulation or the concrete floor using
fixing nails or an adhesive. It is important to ensure
there is no movement of the fixings.
The fixing strips should be evenly spread across the
floor at interval of 30” (0.75m). The fixing strips should
be placed so as to leave a minimum of 4” (100mm)
border all the way around the room.
Examine the cable and test the resistance BEFORE
and AFTER installation.
The heating cable should then be laid up and down
the room and clipped into the fixing strip. The cable
spacing is determined by the product model. The cables should be spaced
evenly at all times to ensure an evenly heated floor
(minimum spacing is 2” (50mm). The cables should
never touch or cross each other.
The heating cable cold tail should be connected to
the thermostat by a qualified electrician in accordance
with NEC (USA). The heating
cables should then be tested again BEFORE POURING
the layer of cement. Record the readings in the
NOTES Section. Once laid, the heating cables must be
covered with a minimum thickness of 1¹/₈” (30mm) of