- Ensure the purlin is in a straight and flat condition- Draw a straight line before installing the roof - Purlin Distance 1.2(For Single Profile)- Purlin Distance 1.5 - 1.7 (For Twin Profile)
- The minimum roof pitch is 10%
- Install SDS by the following picture(1 M² requires 4 SDS & 4 Roofseal
- Overlap length between each roofing profiles (if present or neede) is 30 cm (assuming roof pitch is 10%)
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