The idea behind it: heat travels by conduction, radiation and gas movement. In the vacuum core there are hardly any gas molecules to pass heat on, and the layer reflects thermal radiation. In winter, heating warmth stays in the room; in summer, less solar heat reaches the wall.
What has been measured:
- Test rigPScoat reduced energy demand more than 100 mm of polystyrene insulation.
- U-value on a wall as actually built0.14 W/(m²K) (Testo 635-2, measurement report).
- Block of flats from 1960 with a 1 mm build-upU-value 2.63 → 0.096 W/(m²K), confirmed by FLIR thermal image.
The layer is applied like a coating and dries to a protective layer about 1 mm thick. Boards, dowels and connection details are not needed.
Evidence
CE marking to EN 15824 (declaration of performance PSC250T-2026-01) · TÜV NORD Verified Product, mark ID 141649 · U-value guarantee per package · Measurements · All evidence and case studies