🚨 Roof terrace: the 5 most common problems
- Jean Duguay

- Sep 16
- 1 min read
A poorly designed or maintained rooftop terrace can quickly become a nightmare. Here's what we see most often:
✅Insufficient slope → Water stagnates, encouraging infiltration.
✅Damaged membrane → Cracks, blisters, open joints: water always finds a way in.
✅Clogged drains → Leaves and debris block the flow.
✅Poor ventilation → Condensation, mold, corrosion.
✅Lack of protection → Accelerated wear on pedestrian or technical areas.
Expert tip: An annual spring check-up can prevent many costly repairs.
GEQ – Building Council: Inspections that prevent unpleasant surprises.





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