Felt
Built up in layers and found on many older garages. Small splits and blisters can often be patched.
Usually the cheapest to lay, but it lasts the least time, around 15 to 20 years.
Flat Roof Repairs and Replacements in Banbury
Flat roof repairs and replacements in Banbury on garages, extensions and dormers. Checkatrade's Banbury roofers list £661 to £1,865 for a repair. A local roofer calls to say whether yours can be patched or needs a new covering.
Compare flat roof options- Pick what fits bestChoose the closest problem. When the roofer rings, they ask where the water shows or which part of the roof looks wrong.
- A local roofer calls youThey make sure they work in your postcode, ask about the roof and say when they could take a look.
- Nothing starts without your yesThe roofer prices the job before any work begins. Turn it down and you owe nothing.
Felt, EPDM and GRP compared
Three coverings do most of the work on flat roofs around Banbury.
EPDM rubber
A single sheet of rubber with few seams. Tears can be repaired with a matching patch.
Costs more than felt to lay and can last 30 to 50 years if it is fitted well.
GRP fibreglass
A hard resin and glass-fibre layer laid in one piece, with no seams to open up.
Needs dry weather to cure and can last up to around 30 years.
Repair or replace
The age of the roof and the state of the boards under it decide this.
One split, a loose edge or a lifted seam is usually a repair. If the surface is cracked all over, the deck feels soft underfoot or water keeps getting in at different spots, replacing the covering tends to cost less in the long run.
New Roofs and Reroofing in BanburyGarage and extension roofs
Most flat roofs in Banbury sit over a garage, a kitchen extension or a porch.
The weak points are where the roof meets the house wall and where water drains off the edge. A roof with no fall to the gutter holds puddles, which wear it out faster.
How long each lasts
How well it was laid matters as much as what it is made of.
A cost guide updated in 2026 gives felt 15 to 20 years, EPDM 30 to 50 years and GRP up to 30 years. Ponding water, foot traffic and poor edge details all shorten that.
Questions people ask
How long does a flat roof last?
Roughly 15 to 30 years in most cases, depending on the covering and the fitting. Felt is at the lower end and a well-laid EPDM roof can go much longer.
Can you repair a felt roof?
Yes, if the damage is in one place and the boards beneath are sound. Once a felt roof is cracking all over, a new covering is the better spend.
What is the cost per square metre?
Checkatrade's Banbury figures, checked on 25 October 2026, give about £94 to £135 per m² for bitumen felt, £116 to £167 for EPDM and £123 to £177 for GRP. The roofer quotes your own roof once they have measured it.
Flat roof letting you down?
Call the number below or use the form. A roofer who covers your part of Banbury will ring you back to go through it.
01295 239714