Flat Roof in Exeter
Flat roofs on extensions, garages, and dormers need specialist materials to stay watertight. Modern GRP fibreglass and EPDM rubber membrane systems are designed to last 25 years or more with minimal maintenance, and existing felt flat roofs can often be repaired or overlaid where the structure is still sound. Describe your flat roof in the chat and a local roofer calls you back to scope it and quote.
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Flat Roof on Exeter Properties
Flat roofs are extremely common across Exeter housing. Rear single-storey extensions to Victorian and Edwardian terraces — particularly in St James, Heavitree and Pennsylvania — almost universally have flat roofs, originally built in bituminous felt and now often well past their design life. Dormer extensions on 1930s semis across Whipton and Wonford typically have flat tops too. Garages across every era of Exeter housing use flat roofing, and porches on 1960s and 70s estate housing add to the mix. Newer extensions are increasingly built in GRP fibreglass or EPDM rubber from the outset.
Local Conditions and Common Causes
Flat roofs are never truly flat — they need a slight fall to drain rainwater. Many older Exeter flat roofs fail because the original installer did not get the fall right, water ponds on the surface, and the membrane breaks down under sustained moisture. Exeter's mature trees deposit debris into outlets and cause backups, particularly on extensions overshadowed by neighbouring gardens. Winter freeze-thaw cycles expand any small cracks in old felt, leading to sudden failure each spring. Internal staining on the ceiling below is often the first visible sign — by that point the roof deck above is usually saturated and replacement is the only real option.
Typical Flat Roof Jobs in Exeter
A typical Exeter flat roof job is either a full replacement of failing felt with a modern GRP fibreglass or EPDM rubber system, an overlay on an existing flat roof where the deck and structure are still sound, or a localised repair to extend the life of an otherwise serviceable surface. Most domestic flat roofs — extension, garage, dormer — take one to two days. The existing covering is stripped, the timber deck is inspected and any rotten boards replaced, then the new membrane system is installed with new flashings and outlets.
Flat Roof — Common Questions
What is the difference between GRP fibreglass and EPDM rubber?
Can an existing flat roof be overlaid or does it have to be stripped?
How long does a new flat roof last?
Do flat roofs need regular maintenance?
Why does my flat roof leak only when it rains heavily?
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