GRP fibreglass flat roofing
A GRP roof is glass fibre matting laid onto a board deck and saturated with resin, which then cures into a single rigid sheet. No joins, no seams, no laps. On a domestic flat roof it is usually one continuous piece of material from edge to edge.
That is the whole argument for it. Nearly every flat roof leak starts at a join, and a GRP roof does not have any.
- Covering
- East Lancashire & Craven
- Quotes
- Free, no pressure
- Ring or text
- 07840 031508
Where it works well
- Extensions and rear additions
- Dormer roofs and dormer cheeks
- Garages and outbuildings
- Porches and bay roofs
- Balconies and any flat roof that gets walked on, because it takes foot traffic far better than felt
- Roofs with complicated shapes, upstands and penetrations, where every extra detail is a join in any other system
What is involved
- The old covering comes off and the deck is inspected properly.
- New decking goes down if needed. GRP needs a sound, rigid, dry deck, normally OSB3 board. This is not optional and it is why GRP cannot be laid over a tired old deck.
- Trims are fitted at the edges and drip points, which are part of the waterproofing, not just a finish.
- Matting and resin are laid and rolled out, working wet on wet so the whole thing cures as one piece.
- A topcoat goes on for UV protection and colour, with a non-slip grit where the roof will be walked on.
Why the weather matters
GRP is the one flat roof covering that genuinely cannot be rushed. The resin needs dry conditions and a reasonable temperature to cure properly, and a deck that is damp when it goes down will cause problems later.
That means we will sometimes tell you we are not laying your GRP roof this week. A roofer who says they will fit fibreglass in the rain is telling you something useful about how they work.
GRP compared with the alternatives
- Against felt
- More expensive, considerably longer lasting, no seams, and much better underfoot. Felt is the right answer on a big simple roof with a tight budget.
- Against EPDM rubber
- Similar cost bracket. EPDM copes better with a deck that moves a lot and goes down in any weather. GRP is harder-wearing, better on complicated shapes, and gives a neater finish at the edges.
- Against a pitched conversion
- Cheaper, quicker, no planning considerations, and keeps your headroom. A pitched conversion is the permanent answer where a flat roof has been trouble for years.
What GRP costs
- Size and how many edges, upstands and penetrations there are, since detailing is the slow part
- Whether the deck needs replacing, which it often does
- Access and scaffold
- Colour and whether a non-slip finish is needed
The things people ask us
Properly laid on a sound deck, a long time, and the material itself does not have seams to fail.
No. It needs a clean, dry, rigid deck. Laying it over old felt is a shortcut that fails, and anyone offering it is storing up a problem for you.
Yes, better than any other flat roof covering. If it is a balcony or a regular access route, tell us and we will put a non-slip finish on.
What people said about the work
Read the reviews, then ring us and see if we match up.
Alex replaced our guttering, reset all the ridge tiles on the roof and capped the chimney properly. Alex and Luke were a breathe of fresh air to deal with. Alex was very friendly, he kept us informed of progress and what they were doing. He attended at the specified time and always kept everything clean and tidy. Quotes were accurate and were stuck to. Quality work throughout so if you want half a job doing don't call him. Personally I…
Alex and Geoff took great care inspecting the roof and deciding on a plan of action. Geoff and Luke worked seamlessly together to repair the numerous faults they discovered. They were cheerful and courteous at all times and were always ready to explain how the work was progressing and the issues they were dealing with as they arose. Jason and Alfie did a good job with the rendering. Photographs were provided, documenting their…
Alex and Luke have pointed our chimney and replaced pots. All the ridge tiles have been removed and replaced. Nothing has been too much trouble for these guys. We are more than happy with the end result. Totally reliable and trustworthy. Very friendly lads. I would 100% recommend their services.
Alex has just repaired chimney (putting right someone else’s bad work mainly) and ridge. Used Alex before after storm in 2022 brought guttering down on my 300 yr old cottage. Measured, made and fitted within about a week thankfully after months of others roofers either not showing or making out how difficult the job was
Very pleased indeed. Alex was responsive, helpful and, as chance would have it, was able to do the repair to the guttering at our daughter's bungalow, promptly. The charge was minimal for two tradesmen. Would certainly use again and have no hesitation in recommending him to others.
Alex and his team did a first class repair job on my roof. Excellent value for my money. Kept me informed at all stages of the job, clean and tidy on completion.
Alex replaced our leaking guttering. The guttering was measured, ordered and all replaced within a week! The job was done very professionally and at a great price! Great guys, who left the area spotless, when finished. Fantastic job! Great, honest, genuine tradesman. We would highly recommend to all!!!!!
We met Alex by chance one rainy afternoon on the local canal towpath. We were both sheltering from the rain under the same bridge. My husband and I had, earlier, been discussing our garage roof which was new a few years ago, but which had been leaking for some time. We think our chance meeting with Alex was meant to happen as, for some reason, I mentioned our leaky roof to him. We have always had difficultly finding reliable…
Excellent job, lovely people, very good roofers and sensible prices
Absolutely brilliant service from start to finish. The work was completed to a really high standard they were reliable, professional and tidy throughout. It’s clear they take pride in their work, and the finished roof looks fantastic. Would definitely recommend them to anyone looking for a trustworthy, hardworking roofer. Thank you to Alex, Jeff, Ryan & Junior Kath & Eric at Number 6
Great job done by Alex, Jason and Alfie on our chimney stack and roof. They provide a very professional friendly, service and are a pleasure to work with. We wouldn’t hesitate to recommend their services. Thank you so much.
Excellent work done by a superb team. Alex, Geoff and Luke have done an incredible job on my roof and front of house. The roof no longer leaks (when living in Preston that's an important thing!) and the front of the house appearance has been transformed from an old tired look to a clean and more modern feel. They provide great advice, give you a quote detailing what they are going to do and then crack on and do a brilliant job…
Other things we do
Roof slating
Welsh blue slate and Yorkshire stone slate. Individual slates, patch areas, and full re-slates on the stone terraces round here.
Read moreRoof tiling
Concrete and clay tiles. Re-bedding ridges, replacing cracked tiles, and full re-tiles on the post-war housing.
Read moreFlat roofs
Extensions, dormers, garages and porches. Repairs where a repair will hold, replacement where it will not.
Read more