Home > Companies > GYPSOL - LKAB > Gypsol Solida Heated Screed System

The heating system is coupled with energy efficient heat sources such as condensing gas boiler systems or renewable heat technologies such as air or ground source heat pumps which may be more appropriate to higher code and carbon neutral developments.

Features and benefits:

  • Offset reductions in build costs.
  • An increased number of houses in a given plot.
  • Reductions in heating operating costs.
  • Improvements in energy efficiency.
  • When a change is made from radiators to underfloor heating, the occupier gains more useable space in each room. The generally accepted figure for this is 8–10% more useable space. This offers a number of practical and commercial opportunities to the house builder.
  • The use of Gypsol based screeds over the underfloor heating systems reduces the operating costs of the heating system. Tests using efficient and correctly designed underfloor heating systems have shown that using anhydrite screeds can improve the co-efficient of performance of an underfloor heating system by up to 25%.
  • Additionally flow temperatures can be reduced by some 40– 50ºC compared to the temperatures required for radiator systems or some 10– 15ºC compared to underfloor heating systems in traditional sand cement screeds. This adds to the desirability, helps justify a higher selling price and also helps the builder to achieve higher code levels where required and to gain extra code credits in coded sustainable developments.
  • Smaller house footprint means reduced build costs.
  • Smaller footprint means potentially higher housing density of up to 10%, thus increasing a site’s profitability.
  • Smaller footprints mean greater opportunities for incorporating open spaces in developments making them more desirable.

Standard product features

The Gypsol screed is class A1fl non-combustible it enhances the fire safety of the floor and as it is laid on a sealed membrane should reduce the risks of fire and smoke breakthrough allowing time for occupants to escape.

Separating floor:

  • 40 mm (allow minimum 25 mm cover to pipes) of Gypsol TimBRE Screed with embedded underfloor heating.
  • Optional thermal or acoustic insulation.
  • 500g polythene slip membrane.
  • 22 mm OSB deck.
  • 220 mm engineered timber I-Joists at maximum 600 mm centres.

Ground floor:

  • 40 mm (allow minimum 25 mm cover to pipes) of Gypsol TimBRE screed with embedded underfloor heating.
  • Minimum 500g slip membrane.
  • Minimum EPS100 polystyrene insulation.
  • Minimum 1200g polythene damp proof membrane.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
20-55-10/130 Floating calcium sulfate-based screed system

Product specification

An important note about specifying





+44 (0)1928 574 574

Product reference

Gypsol Solida Heated Screed System


 - Floor:
[Separating floor]
[Ground floor]
 - Insulation:
[EPS100 polystyrene insulation]
For use with ground floors only.
For use with separating floors only.
For use with separating floors only.

Manufacturer details

Percival Lane,
Cheshire, WA7 4UY
Tel +44 (0)1928 574 574
NBS Plus
NBS National BIM Library