Flat roofing
Flat Roofing
Flat Roofing in Lincolnshire, Cambridgeshire & Norfolk
Flat roofs on garages, extensions and dormers take more punishment than any other part of a house. We repair and replace them in EPDM rubber, GRP fibreglass, felt and liquid membrane — and we'll tell you honestly which suits your roof.
5.0★ on Google- Real people answer the phone
- Free roof survey & written quote
- Photos at every stage
- 5.0★on Google
- Same daycall-outs, Saturdays too
- Writtenquote before any work
- Photosat every stage
- 24/7storm & emergency
The problem
Why flat roofs fail
A flat roof is never perfectly flat — it relies on a slight fall to shed water. Over the years, old felt cracks and blisters in the sun, joints open up, and the decking underneath can sag, leaving puddles that sit for days. Standing water finds every weak point.
Leaks on flat roofs are notoriously hard to trace, because water can run along the deck before it drips through somewhere else entirely. That's why patching the obvious spot often doesn't work.
Signs to look out for
- 01Puddles that stay on the roof long after rain
- 02Cracks, blisters or bubbles in the felt
- 03Damp patches or staining on the ceiling below
- 04A soft or spongy feel underfoot
- 05Lifting edges, trims or flashings
- 06Moss and plant growth on the surface
How we fix it
The right system for your roof
We start by finding out exactly why your flat roof is failing. That means checking the surface, the edges and upstands, the outlets and — where we suspect it — the decking underneath.
If a repair will do the job, we'll repair it. If the roof needs replacing, we strip back to the deck, replace any rotten boards, and lay a new system with proper upstands, trims and outlets. We'll explain the options between EPDM, GRP, felt and liquid membrane, and what each means for your roof.
As with all our work, we keep you updated with photos and leave the site tidy.
Flat roof systems we fit
- EPDM rubber
- A single sheet of synthetic rubber with very few joints. Flexible, handles temperature changes well and suits garages and extensions.
- GRP fibreglass
- A seamless, hard-wearing finish laid in resin and glass mat. Neat edges and good for roofs that see occasional foot traffic.
- Felt (torch-on)
- Modern multi-layer felt systems — a long way from the old single-layer felt that gave flat roofs a bad name.
- Liquid membrane
- Applied as a coating, ideal for awkward shapes, lots of penetrations or overlaying a sound existing roof.
Good to know
Getting the details right
Whatever material goes on top, a flat roof is only as good as its edges. Most failures we see aren't in the middle of the roof — they're at the upstands where it meets a wall, around outlets, and where trims have been badly fixed. That's where we spend the most care.
The deck matters too. Laying a new membrane over soft or rotten boards just hides the problem. When we replace a flat roof, we check the deck as we strip it and replace any boards that have gone, so the new surface sits on something solid and keeps its fall.
If your flat roof sits next to a pitched roof, water from the slope above can pour onto one spot. We'll look at how that water is handled and make sure it's directed where it should go.
We work on garages, single-storey extensions, dormers, porches, bay windows and larger flat roofs on commercial buildings. Whatever the size, you'll get photos of the old roof, the deck once it's stripped and the finished job, so you know exactly what's under your new surface.
What's included
What you get from us
- Free inspection to find the real cause of the leak
- Honest advice on repair versus replacement
- Rotten decking replaced where needed
- New edges, trims, upstands and outlets
- Photo updates throughout
- All waste removed and the site left clean
Free, no-obligation quote
Know where you stand before we start
Flat roofs differ in size, access and what's underneath. We'll inspect yours and give you a free, no-obligation quote for the right system — we'll price it properly after a look.
5.0★ on Google
In our customers' words
“My large flat roof was leaking so I turned to Lincs Roofing & Guttering … they kept me informed every step of the way.”
“We noticed some water ingress on our flat roof… they are reasonably priced and turned up on the date that they were required to start.”
“Had garage roof replaced and new felt, part laid on main roof of property and very pleased with job done. Great bunch of lads, very friendly and efficient. Would highly recommend.”
How it works
Four steps. No surprises.
- STEP 01
Call, WhatsApp or send the form
Tell us what's going on. Photos help — but please take them from the ground.
- STEP 02
Free inspection & quote
We come out, get up there and show you photos of what we found. Free, no-obligation quote — we'll price it properly after a look.
- STEP 03
Work done tidily
Scaffold and skip organised for you, photo updates as we go, and the site left clean every day.
- STEP 04
Tidy finish
Waste removed and the site left tidy, with photos of the finished job.
Free roof survey & written quote
Why homeowners trust us
Why homeowners trust us
Real people answer the phone
Backed by Christine Cragg's review
Free, no-pressure survey
Backed by Claudine Albert's review
Clear written quote before any work
Backed by Manny Henriques's review
Photo updates during the job
Backed by Debra Hudson's review
Same/next-day emergency response, Saturdays included
Backed by Donna Bradford's review
Scaffold, skip and waste all organised for you
Backed by Debra Hudson's review
FAQs
Flat roofing: your questions
Which is best — EPDM, GRP or felt?
Each has its place. EPDM is flexible with very few joints, GRP gives a seamless hard-wearing finish, and modern felt systems are tough and versatile. We'll recommend what suits your roof's size, shape and use.
Can you repair my flat roof instead of replacing it?
Often, yes, if the problem is local and the rest of the roof is sound. If it's failing across the surface or the deck is rotten, replacement is usually better value.
How do you find a flat roof leak?
We inspect the surface, joints, upstands and outlets, and where needed open up the area around the leak to trace where water is getting in rather than where it's coming out.
Can you do garage roofs?
Yes. Garage roofs are some of the most common flat roofs we replace, along with extensions, dormers and porches.
How long does a flat roof replacement take?
Most garage and extension roofs take a day or two, weather permitting. We'll confirm timescales with your quote.
Can water sit on a flat roof?
A little after rain is normal, but puddles that remain for days suggest the fall or decking needs attention. We'll check this as part of any replacement.
Related services
- Leak detectionWe trace the leak to its source before anything gets replaced, so you only pay for the fix.
- Roof repairsSlipped tiles, leaks and storm damage found, explained with photos and fixed properly.
- Conservatory roofsSwap a hot, leaky conservatory roof for a tiled roof that feels like a proper room.
- Commercial roofingRepairs and re-roofs for shops, farms, units and landlords across the Fens.
Free quotes · No obligation
Get your free, no-obligation quote today
Tell us what's happening with your roof or gutters. Free, no-obligation quote — we'll price it properly after a look.
Open 24 hours, 7 days a week · Based in Spalding, Lincolnshire
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