As with most temporary flat roof repair work a paint on solution can fix leaks.
Repair cracked roofing felt.
How to repair a flat roof leak.
The surface may also suffer from dips or hollows.
Where wind driven rain is working under the roof and causing leaks then the felt will need to be replaced.
If the issue is caught early enough small areas can be removed and patched.
Carefully clean the surface over and around the blister of any chippings mould and dirt.
This will usually be a crack in the felt or where the felt has peeled away from the roof.
Typical cracks show up as deep lines in the roofing.
Edging can also lift or old flashings against the wall could leak.
Remove loose roofing gravel at the area of a crack with a wire brush.
A repair is best made after a long period of dry weather has allowed any moisture in the roof felt to dry out.
A roofing contractor can investigate the cause of the cracks and determine the best solution for your roof.
Old pour and roll felt roofing can crack get puncture holes usually from impact or the felt could split.
Inspect the roofing for cracks at raised ridges and blistered areas.
For any repair always clean the area thoroughly removing any chippings and use a fungicide to kill any mould growth.
To fix a felt flat roof leak first find out where the water is working it s way through the felt.
Pour some water on the felt roof to see how the water runs into the gaps.
Blisters in the felt.