- pro clima Airtight / Windtight System
- Gutex Wood Fibreboards
- Calsitherm Climate Board
- Internal Wall Lining
- Natural Insulation
- Diasen Thermal Plaster
- Wellhofer Airtight Attic Hatches
- Spanotech Structural Boards
- Auro Natural Paints
- Passiv Ecowall
- ELKA Strong Boards
Wellhofer Airtight Attic Hatches
As part of our airtight range we are also delighted to bring you the Wellhofer attic hatch which is pre sealed for airtightness.
Manufactured and engineered in Germany and has been tested to stringent DIN standards to comply with airtightness and insulation requirements. The Wellhofer hatch remains airtight even under blower door test conditions.
For the first time the safety of the certification by the Passive House Institute is provided by Wellhöfer Passive House Attic Stairs/Hatches. Maximized double insulation, new double sealing and a specialized PH-connection system meet the stringent criteria for the overall system "attic stairs + ceiling" including the thermal bridges.
How to install Wellhofer Airtight Attic Hatches
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