Description
The Wellhöfer Certified Passivhaus Certified Attic Ladder provides loft access without compromising the airtightness and insulation of an airtight building. The hatch is fully airtight with additional insulation (more than the standard Wellhöfer attic hatch) to help buildings achieve Passive House standard.
It is easy to install with tests proving an airtight test result 5 times better than Europe’s most stringent air leakage standard (DIN 4108-2) is possible.
Features
- Stringently tested and Passivhaus certified
- Airtight with superior insulation
- Unique door and perimeter sealing system
- Energy efficient
- Surpassed VOC and emission testing by renowned Sentinal Haus Institute
Key Technical Data
- 0.48 W/m²K
- PH (Passive House)
- 1.2 m and 1.3m
- 650 mm
- 500 mm
- 0.48 m³/mh
- Class 4
**Supplied with specialist seals, spring loaded hatch door, architrave trims and wooden stair ladder.**
AVAILABLE SIZES
Product Code | Ceiling Height
| Hole in Ceiling (length x width) | Depth of Hatch | Ladder Name | Min Distance from Closest Wall | Touchdown Point | Folding Space |
| WAPHAH250 | 2480mm to 2589mm | 1200mm x 650mm | 500mm | 250 | 1011mm | 1437mm | 171mm |
| WAPHAH260 | 2590mm to 2719mm | 1300m x 650mm | 500mm | 260 | 942mm | 1520mm | 1742mm |
| WAPHAH290 | 2850mm to 2989mm | 1300mm x 650mm | 500mm | 290 | 1102mm | 1614mm | 1902mm |
