The Inslab Cable is designed for use within a concrete floor construction.
The Warmup In-Slab cable System is designed for use within a concrete slab. The cable spacing can be altered to fit the heating requirements and the thickness of the slab. Warmup WODH cables provide 20W per sqft or up to 70 BTUs per hour and easily replace water-based applications. With an electric system, there is no boiler, no pump, no manifolds, and no maintenance required. It is the ideal solution for builders and remodelers in basements and room additions.
If you are looking for underfloor heating for concrete floors, the In-Slab Cable System is designed for this purpose. In-Slab Cable heating is especially ideal for installations within concrete floor constructions in new builds where the floor height is not an issue. For retrofit in existing concrete floors where there is less room to alter the floor height, another electric underfloor heating system may be a more suitable option.
The In-Slab Cable electric underfloor heating system is designed for installation in concrete screed thickness of 2-6″. If insulation is absent or beneath more than 4″ of the concrete subfloor, insulation boards must be used to ensure optimum heat-up times.
The In-Slab Heater is suitable for almost any flooring finish and in particular where the flooring (wood, carpet, vinyl) may be replaced from time to time.
The slower heat-up and cool-down time of the In-Slab Cable make it particularly suitable for rooms that are in constant use, as the slab can be used as a form of storage heating.
Almost any floor covering can be considered with In-Slab Cable. Since the heater is safely embedded in cementitious slab there is less of a risk of harming the heating cable if the floor covering will be changed from time to time. The following floor coverings are suitable with In-Slab Cable:
If a tiled floor is being laid on top, flexible tile adhesive and grout must be used with the In-Slab Cable electric underfloor heating system.
With laminate or engineered wooden board floors, it is essential that the flooring is no more than 18mm thick to ensure that the heat can transfer through. If you are using a layer of soft insulation beneath the flooring it must be compatible with installation on top of an underfloor heating system.
For carpeted floors, hessian backed carpets must be used and the Tog rating of the carpet and underlay must not exceed 2.5 tog.
Before starting any installation it is important to first read the installation manual. If the concrete base is thicker than 4″ or the subfloor is uninsulated, it is recommended to apply insulation boards and lay the wire directly on this insulation. If the concrete base is less than 4″ thick or insulated, the wire can be laid onto the concrete slab. While the latter option is acceptable, insulation directly below the heating cable will improve the efficiency of the system.
Before you start, make sure the subfloor is of a suitable material as well as suitable for a slab pour and is rigid and free of dust and debris.
The In-Slab Cable should be laid at least 2″ apart and a minimum of 2″ deep within the slab. To secure the In-Slab cable to the subfloor you will need metal fixing strips. The metal fixing strips are laid out perpendicular to the heating element and fixed to the insulation board or the concrete floor using fixing nails or an adhesive; always ensuring there is no movement of the fixings. The heating cable is then laid up and down the room and clipped into the metal fixing strip. Always space the cable evenly to ensure an even distribution of heat in the floor.
After the cable is in place, the next step is to pour over the heating system by carefully pouring cementitious material over the fixed in In-Slab Cable to a depth of at least 2″. Place the floor probe supplied with the thermostat as close to the final floor finish as possible, embedding it in the slab. Finish the installation by wiring the heating cable to a thermostat.
Once the concrete or leveling compound is fully dried you can lay the final floor covering.