LWT
| Certified since | 19 novembre 2015 |
| Climate zone | Frais, tempéré |
| Type | Attic Staircase |
| Classe d'efficacité | phA+ |
| Material | Bois d'œuvre |
| UW | 0,51 W/(m2K) |
| Open type |
Description
Attic stairs made of pinewood with thermally seperated metal fittings and 3 sealing-levels (EPDM). Attic stair hatch of Styrofoam (λ = 0.031 W/mK) with a coating of high density fibreboard (HDF). Sorrounding insulation (λ = 0,035 W/mK) to ceiling structure connection.
| Nom | Frame width | U-Value | Ψ-Value | Frsi-Value |
|---|---|---|---|---|
| Bottom | 40 mm | 0,52 W/(m²K) | 0,000 W/(mK) | |
| Top | 40 mm | 0,52 W/(m²K) | 0,000 W/(mK) | |
| Lateral | 40 mm | 0,52 W/(m²K) | 0,000 W/(mK) |
