Therm
A screed for underfloor heating systems
Engineered specifically for underfloor heating, Therm fully encapsulates pipework to eliminate air voids and maximise heat transfer. Its reduced installation depth compared to traditional sand and cement screeds improves system response times and energy e ciency. The result is faster heat-up, lower running costs, and a floor that performs from day one.
| Screed specification | EN 13813:2002 |
| Compressive strength | C20, C25, C30 |
| Minimum thickness | Bonded: 20mm | Unbonded: domestic 30mm, commercial 40mm | Floating: domestic 35mm, commercial 40mm | Over UFH pipes: 25mm (C20/C25), 20mm (C30) |
| Shrinkage (28 days) | <0.05% |
| Flow rate | 230-260mm |
| Fresh Density | 2100-2200kg/m3 |
| Surface Flatness | Min SR2 |
| ISCR Test | Category A |
| Open to light foot traffic | 24-48 hours |
| Maximum bay sizes | Non-heated : 150m2 | Heated: 100m2 |