Flat Roof Repairs specialists
Flat Roof Repairs in Highgate
Flat roofs on extensions, garages, dormers and bay windows are common across Highgate, and they are often the first roofs to leak. Ponding water, blistered felt and failed upstands all let water in. Grange Roofing repairs flat roofs of every type throughout Highgate and the boroughs of Haringey and Camden.
We find where the water is getting in, explain whether a repair will last, and give a clear written price โ with an honest recommendation if replacement is the better option.
Flat roof problems we repair
- โBlisters, splits and cracks in felt roofs
- โLeaking upstands, flashings and edge trims
- โPonding water and low spots
- โDamaged EPDM rubber membranes
- โCracked GRP fibreglass roofs
- โLeaks around rooflights and outlets
Why flat roofs leak
Many homes in Highgate have tall Victorian terraces, converted flats and slate-roofed period properties with valleys, parapets and chimney stacks, and their flat roofs take a beating from rain, UV and temperature changes. Felt becomes brittle, joints open up and poor falls let water sit on the surface until it finds a way in.
Felt, EPDM and GRP repairs
We repair traditional torch-on felt, EPDM rubber and GRP fibreglass roofs using compatible materials, so the repair bonds properly. Patching one material with the wrong product is a common reason repairs fail quickly.
When repair isn't enough
If the deck underneath has gone soft, or the covering has failed across large areas, repeated patching wastes money. In that case we'll quote for a full flat roof replacement with a 10-year guarantee.









