Hessle, East Yorkshire
A glass-fibre laminate laid over a sound deck. It is a single membrane with no laps to open, which is why it suits many house extensions and dormers.
In plain terms
GRP is a glass-fibre laminate over a sound deck. It is one piece, with no laps in the middle to open, which is why it suits many house extensions and dormers. The deck has to be dry, rigid and sloped. Resin on damp or moving boards cracks.
We form the falls so water leaves the roof, laminate the trims and the upstands with the field of the roof, and finish with a topcoat that can be walked on for maintenance. The topcoat is usually grey. On a house, the edge and the flashing matter more than the colour of a roof you barely see from the street.
We do this from Hessle, across Hull, Beverley, Anlaby and Anlaby Common, Willerby, Woodmansey and the villages in between. Call 01482 627895 or use the form further down. We look at the roof before we price it. A written quote is available if you want one, and the work we agree is guaranteed for at least 12 months, and often for longer depending on the job.
Paul Southwell, director, is the contact named on our National Federation of Roofing Contractors listing. Updated 19 October 2026.
The job
On the board
GRP laminate and pre-formed edge trims. The deck is exterior-grade boarding, fixed so it cannot move and crack the laminate.
Before you call
Straight answers about GRP fibreglass for houses in Hessle, Hull, Beverley and the villages around them.
GRP means glass-reinforced plastic: a fibreglass skin laid over boarding. It is a single membrane, so there are no joints in the middle of the roof to open. It is for flat roofs, extensions and dormers, not a substitute for tiles on a pitched roof.
Only when the day is warm enough and the deck is dry. If it is not, we wait. A laminate laid onto damp boards fails, and we would rather pause than do that.
There is not enough fall to the outlet. Standing water then finds any weak edge. We form falls as part of the job, rather than leaving a puddle in the middle of the extension.
If the deck is sound, dry and rigid, GRP is often a good fit. If the boards are soft or wet, they are replaced first, and felt may still be the better roof. The choice is made on site, not from a photograph.
The topcoat is usually grey. From the street a flat roof is mostly the edge trim and the flashing against the wall. Those details are what we get right. The colour of the flat field is secondary.
Extensions, dormers and other flat roofs on houses in Hessle, Hull, Beverley, Anlaby and Anlaby Common, Willerby and Woodmansey.
Also
Quote
We come out and look before we price it. A written quote is available if you want one.