Technical analysis
Checking functional faces, drainage laps, adhesive faces and exposure before covering the membrane.
Engineering scope
- Principle
- Do not identify the installation face by colour alone; follow the product marking and approved detail.
- Verification
- Reverse laps can direct incidental water into joints even when the membrane material itself is watertight.
- Field control
- Record orientation during the first-area mock-up and concealed-work inspection.
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.