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Inscreed Cable System

The Inscreed Cable System is designed for use within a screeded floor construction

Guide Price
from £14.17 /m² ex. VAT
(Based on a 10m² purchase)

underfloor heating inscreed cable system
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Floor Type
icon-checkmark  All floor coverings
Room Type

icon-checkmark  Large & Small Areas

icon-checkmark  Regular & Irregular Shape

Build Type
icon-checkmark  New Construction
Subfloor Type
icon-checkmark  Screed & Concrete

What project is Inscreed Cable designed for?

If you are looking for underfloor heating for concrete floors, the Inscreed Cable is designed for this purpose. Inscreed heater 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 suited option.

The Inscreed underfloor heating cable system is meant for installation in concrete screed thickness of 50mm to 100mm. One of the best screeds to use for this process is from Instarmac’s UltraFloor range. If insulation in the dwelling is absent or beneath more than 100mm of concrete subfloor, insulation boards must be used to ensure optimum heat-up times.

The Inscreed 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 Inscreed Cable makes it particularly suitable for rooms which are in constant use, as the screed can be used as a form of storage heating, making effective use of cheaper, low-tariff energy usage.

underfloor heating cable
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Inscreed Electric Underfloor heating Cable Installed in a Bathroom

Suitable Floor Coverings for Inscreed Cable

Almost any floor covering can be considered with Inscreed Cable. Since the heater is safely embedded in cementitious screed there is less of a risk harming the heating cable if the floor covering will be changed from time to time. The following floor coverings i.a. Are suitable with Inscreed cable:

  • Tiles

If a tiled floor is being laid on top, flexible tile adhesive and grout must be used with the underfloor heating.

  • Laminate/Wood

With laminate or engineered board floors it is essential that it is no more than 18mm thick to ensure that the heat can transfer through the covering. 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.

  • Carpet

For carpeted floors, hessian backed carpets must be used and the Tog rating of the carpet and underlay must not exceed 2.5 tog.

Installation of Inscreed Underfloor Heating on Concrete Floor

Before starting with the installation it is important to always first read the installation manual. If the concrete base is thicker than 100mm or the subfloor is uninsulated, it is recommended to apply insulation boards and lay the wire directly on insulation. If again the concrete base in less than 100mm thick and insulated, the wire can be laid onto the concrete pad. 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 screeding, rigid and free of dust and debris.

The Inscreed Cable is laid at least 50mm apart and minimum of 50mm within screed. To secure the Inscreed 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. It is important to ensure 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 evenly heated floor.

After the cable is in place the next step is to screed over the heater by carefully pouring cementitious screed over the heating cable to an even depth of at least 50mm. Place the floor sensor supplied with the thermostat as close to the final floor finish as possible still embedding it in the screed. Finish the installation off by wiring the heating cable to a thermostat.

Once the screed or levelling compound is fully dried you can lay the final floor covering.

Inscreed Electric Heating Cable Installation in a Kitchen

Key Benefits


Floor covering can be changed

Without damaging the heater, saving money and increasing flexibility.

Optimal Output

Powerful output cable can be laid at different spacings to give optimal output to complement the flooring finish or room design

Works under any floor finish

Inscreed Cable works with any floor covering compatible with underfloor heating.

Guarantee and Warranty

Safety Net Installation Guarantee

If you accidentally damage the heating system during installation, return it to Warmup and we will replace it with another heater of the same make and model free.

10-Years Limited Warranty

This product comes with a 10-Years Warranty. We are completely confident in the standard of our products.

You will also need

4ie underfloor heating thermostat page


Choosing the correct control system is crucial in ensuring that your heating system works in the best possible way, efficiently and easily.

View Thermostats
insulation board page

Insulation Boards

Using Insulation Boards with under floor heating significantly reduces the heat-up times and running costs.

View Insulation
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