Possible causes
- Splits, blisters or cracks in old felt
- Failed upstands and edge trims
- Ponding water from poor falls
- Rotten decking boards
Warning signs
- Water standing on the roof days after rain
- Soft or spongy areas
- Stains on the ceiling below
Typical solutions
- Patch repairs to small areas of damage
- Replacing the covering with GRP fibreglass, EPDM rubber or torch-on felt
- Replacing rotten decking
When to call a roofer
When leaks return after patching or the roof feels soft – that usually means the deck below is getting wet.
This is general guidance. The cause of any roof problem can only be confirmed by inspecting the roof.