GRP Fibreglass Roofing · All Sussex
Local GRP flat roof Installers
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Walk-on tough, seamless fibreglass skin, backed by a 10-year written guarantee.
- Seamless fibreglass, no joints to fail
- Free, no-obligation survey
- 10-year written guarantee, Icopal-approved
Recognise any of these?
A new GRP fibreglass roof can fix them
Most flat roofs leak at a joint, a lap or an awkward upstand, the weak points every jointed system has. A GRP laminate removes them entirely: one continuous fibreglass skin, moulded around every detail and cured hard. If more than one of these applies, a free survey will tell you for certain.
A persistent leak
Water is tracking into rooms or staining a garage ceiling after it rains.
A seamless fibreglass laminate with no joints or laps for water to find.
Blistering or cracking
Your existing felt is lifting, bubbling or splitting across the surface.
GRP cures into one rigid, hard-wearing skin that won’t blister or de-bond.
Pooling water
Water sits on the roof for days after rain instead of draining away.
We build correct falls into the deck before laminating, so it sheds cleanly.
Tricky shapes & detail
Dormers, balconies and upstands where ordinary coverings fail at the edges.
GRP is moulded around every detail in one piece for a crisp, watertight finish.
Failed repairs
Temporary fixes keep coming back and the same areas leak again and again.
Replacing the whole covering in one seamless skin ends the patch-repair cycle for good.
A walk-on roof or terrace
You need a roof that takes foot traffic for a balcony, terrace or roof-light access.
GRP is walk-on tough with a slip-resistant finish option, ideal for usable areas.
Free survey • No call-out fee • Fixed written quote in 24 hrs
Stop leaking at the joints
A jointed roof has a weak point. A GRP roof doesn’t
Book a free survey and find out whether a seamless fibreglass roof is right for yours, at zero cost and no obligation.
- Free survey
- £0 call-out fee
- Fixed written quote in 24 hours
Choosing the right system
Why GRP, and when EPDM or felt suits better
There’s no single “best” system for every flat roof. GRP fibreglass is our go-to for extensions, balconies and detailed roofs that need a crisp, walk-on, seamless finish. For very large open spans or the most exposed coastal roofs, EPDM may last longer; where the deck is sound and budget matters, felt is proven. We fit all three and recommend whichever fits the job, never whichever earns us the most.
GRP fibreglass
25–30 yrs typical lifespanBest for extensions, balconies & complex shapes
A seamless, hard-wearing fibreglass laminate. Brilliant on intricate roofs, balconies and anywhere a crisp, walk-on finish matters.
- Seamless, no joints
- Walk-on tough
- Neat around detail
EPDM rubber
30–50 yrs typical lifespanBest for large flat roofs & coastal exposure
A single rubber membrane laid in one piece. The long-life choice for big spans and exposed, weather-beaten Sussex properties.
- One seamless sheet
- Longest lifespan
- UV & coastal proof
Torch-on felt
15–25 yrs typical lifespanBest value where the deck is sound
Modern multi-layer built-up felt. The most cost-effective route when the existing deck is in good order and you want a proven, reliable system.
- Most affordable
- Proven & reliable
- Great for warm roofs
A GRP roof is only as good as the deck beneath it. On survey we check the substrate, measure the falls and flag any decking or detailing that needs correcting first. Your written quote covers the full system: new OSB3 deck where needed, the fibreglass laminate, colour topcoat, trims and a water test on completion.
Free survey • No call-out fee • Fixed written quote in 24 hrs
How it works
What happens when you call LF Flat Roofing
Free survey
We visit, check the deck and substrate, measure the falls and assess every detail: upstands, trims, skylights and drainage.
Written quote
Fixed price, system spec, topcoat colour, materials and timescales, all clearly explained and sent within 24 hours.
Installation
Deck prepared or re-boarded in OSB3, trims fitted, fibreglass matting and resin laid in layers, colour topcoat applied, full water test.
Handover
10-year written guarantee, photo records of every stage and aftercare instructions, all handed over.
Done once, done right
One seamless skin, guaranteed for a decade
Tell us about your roof and our team will arrange your free survey, most homeowners get a fixed price the very next day.
- 10-year written guarantee
- Walk-on tough & seamless
- No-pressure, no upselling
Why choose us
Why Sussex homeowners choose LF Flat Roofing
10-year written guarantee
A written workmanship guarantee on every GRP roof, on top of the manufacturer’s product warranty. Laid on a checked dry deck, water-tested on completion and Icopal-approved, so your roof is covered for a decade.
Icopal-approved contractor
Trained, tested and certified to install and guarantee approved roofing systems to the highest standard.
Honest expert advice
We fit GRP, EPDM and felt and recommend what suits your roof. If a repair will do, we’ll say so.
Free survey, no obligation
We check the deck and falls, then give a fixed written quote. No call-out fee, no pressure.
Tidy, professional work
We protect your property and garden, work cleanly and take all waste away on completion.
Photo records at handover
Every stage documented: deck, laminate, topcoat and finished detail.
Recent work
EPDM roofs we’ve laid across Sussex
A few recent installs. Every job is finished tidy, water-tested and handed over with photo records.
Burgess Hill
Garage flat roof · EPDM re-roof
Steyning
Rear extension · warm roof + EPDM
Newhaven
Outbuilding · full strip & EPDM
Free survey • No call-out fee • Fixed written quote in 24 hrs
What customers say
Rated 5.0 by Sussex homeowners
“Liam was incredibly knowledgeable and has done a fantastic job of relaying a new flat roof for us!”
“Liam Funnell of LF Flat Roofing was helpful and efficient and did a good repair.”
“Liam was very quick to quote, gave a good price and got our flat roof repaired quickly. Very good experience.”
“Liam was courteous, punctual, competent and a pleasure to have around. Would definitely use him again and have no hesitation in recommending him to others.”
“Liam cares… That’s worth a lot. Carried out the work without any hassle or fuss. Excellent attitude , I will be using his services again.”
“100% reliable, very professional. Arrived promptly and tidied up afterwards. Would recommend and use again without hesitation.”
Questions
GRP fibreglass roofing - your questions answered
The LF Flat Roofing team
Our promise to you
You risk absolutely nothing
Booking a survey is the easy, zero-risk first step. Here’s exactly what you’re agreeing to, and what you’re not.
Free survey, £0 call-out
We visit, get on the roof and quote for nothing. No fee, no catch.
Fixed written quote in 24 hrs
A clear price in writing, what we quote is what you pay.
No pressure, no upselling
If a repair will do, we’ll tell you. The decision is always yours.
10-year written guarantee
Water-tested on completion and guaranteed in writing for a decade.
Free survey. Written quote. No pressure, ever.
One seamless roof, guaranteed for a decade
We’ll visit, check the deck and falls and give you an honest recommendation with a fixed written price. If a repair will do the job, we’ll tell you.
- Icopal-approved contractor, trained & certified
- Seamless fibreglass, laid on a checked dry deck
- 10-year written workmanship guarantee
- Photo records provided at handover
- £0 call-out fee · serving all of Sussex