Technical analysis
Detailing self-adhesive exterior and interior membranes at windows, services and roof-wall junctions.
Engineering scope
- Principle
- The airtight line must be continuous across walls, roofs, floors, windows and service penetrations.
- Verification
- Exterior weather sealing and interior airtight vapour control perform different functions and should not be merged into one unspecified layer.
- Field control
- Use full-scale mock-ups and blower-door testing to verify the completed building, not just individual product data.
System decision
Start with the actual roof or wall build-up, climate, indoor condition and risk at the relevant interface. Product data must be connected to a defined layer and detail.
Documentation and acceptance
Keep design details, approved product data, delivery labels, batch records, mock-ups, concealed-work photographs and repairs traceable to the installed area.