Waterproofing products are only one part of a roof-protection project. The condition of the surface beneath them can determine whether the new layer has a suitable base and whether vulnerable details have actually been addressed.
1. Inspect the whole roof
Start by looking at the field of the roof, parapets, upstands, outlets, cracks, penetrations and previous repair areas. Internal leak locations can help the investigation, but they should not be assumed to identify the exact entry point.
2. Clean the substrate
Dust, dirt, loose particles and contamination can interfere with adhesion. The cleaning method depends on the existing surface and waterproofing system.
3. Remove unsound material
Peeling or detached coatings should not simply be trapped under a new layer. Unsound material may need to be removed back to a suitable base.
4. Treat cracks and details
Cracks, corners, penetrations and changes of plane often need specific detailing. The exact treatment depends on the selected system and the type of defect.
5. Check drainage
Blocked outlets and areas of persistent ponding should be considered before waterproofing. A membrane or coating is not a replacement for functional roof drainage.
6. Use primer when the system requires it
Primer selection should follow the product system and substrate requirements. Applying incompatible materials can create adhesion or performance issues.
7. Respect application conditions
Surface moisture, temperature, weather and curing requirements matter. The manufacturer's technical instructions should guide application rather than assumptions.
Our roof waterproofing service in Paphos is built around inspection and preparation before the main waterproofing layers are applied.