Flat roofs that shed water, not hold it.
Updated
We carry out flat roof repairs and fit new EPDM rubber, GRP fibreglass and felt roofs on extensions, dormers, bays and garages. A free drone survey shows whether yours can be repaired before we quote.
- Free drone survey of the roof
- Repair or replace, explained with photos
- 10-year written guarantee on new roofs
- MembraneSplit at the edge
- DeckSound
- AdviceRepair
9.93/1010-year written guaranteeFree drone and CCTV surveysLeaks treated as a priorityWhat goes wrong with flat roofs.
- Standing waterPools that sit for days and wear the surface out.
- Splits and blistersFelt that has cracked, bubbled or lifted at the seams.
- Failed edgesTrims and drip edges letting water behind the fascia.
- Leaks at the wallFlashing where the roof meets the house has worn.
- A soft or spongy deckWater has got into the boards underneath.
- Moss and debrisBlocked outlets and gutters holding water on the roof.
Three flat roof systems we fit.
A single sheet with few or no joints, quiet and flexible.
A hard, joint-free finish, good for roofs you walk on.
Modern layered felt, a familiar choice for garages and extensions.
From survey to new flat roof.
- 1SurveyDrone and close look
The surface, edges, outlets and the wall joint.
- 2AdviceRepair or replace
Explained with photos, in plain English.
- 3QuoteWritten price
The system, the falls and the finish, in writing.
- 4HandoverPhotos and guarantee
Before and after, guarantee in writing.
Flat roof repairs or a new flat roof?
Not every leaking flat roof needs replacing. If the deck underneath is dry and solid, a split, a blister or a failed edge can often be repaired, and the roof can carry on for years. If the deck has gone soft, water is spreading under the surface, or the roof has been patched many times, a new roof is usually better value.
The drone survey photographs the whole surface, the outlets and the joint with the house wall. On the ground we check the deck for soft spots and look at the ceiling below. You get the photos and a clear recommendation, and we quote for the option you choose.
Choosing a flat roofing system.
EPDM is a synthetic rubber laid as one large sheet, so most roofs have few or no joints. It copes well with heat and cold and is a popular choice for extensions and dormers. GRP, often called fibreglass, is laid wet and sets into a hard finish with no joints, which suits roofs that are walked on or have awkward shapes. Modern built-up felt is laid in layers and is a cost-effective choice for garages and simple roofs.
Whichever you choose, the details matter more than the brand. A flat roof needs a fall so water runs off, outlets and gutters that can carry it away, and proper upstands and flashing where the roof meets the wall. Most flat roof leaks start at those details, so that is where we spend the time. We also check that rooflights and lanterns are sealed properly, as they are a frequent source of leaks on extensions.
Insulation and building regulations.
When a flat roof is replaced, building regulations may require the roof to be insulated to current standards. A warm roof, with insulation laid on top of the deck, is usually the simplest way to do it. We explain what applies to your roof and include it in the quote, so nothing is added later.
What affects the cost of a flat roof.
We quote after the survey. These are the main factors.
- Size and shape
- The area, and how many corners, rooflights and pipes there are.
- The deck
- Whether the boards underneath are sound or need replacing.
- System
- EPDM, GRP or felt, and any insulation required.
- Edges and gutters
- New trims, upstands, flashing and outlets.
out of 10 · 5 reviewsHighly recommend. Fast responsive professional and respectful, I would definitely use again. Thank you
Finished jobs, with the photos.
Flat roof questions.
Anything else, just call. You'll speak to someone who knows roofs.
Call us07888 868356Can a leaking flat roof be repaired?
Often, yes. If the deck underneath is dry and solid, splits, blisters and failed edges can usually be repaired and the roof will carry on for years. If the deck has gone soft or the roof has been patched many times, a new roof is better value. The survey photos show which applies to yours.
Which is better, EPDM or GRP fibreglass?
Both are good when fitted properly. EPDM is a single rubber sheet that is flexible and has few joints, which suits most extensions and dormers. GRP sets into a hard surface with no joints that suits roofs people walk on or roofs with awkward shapes. We recommend one for your roof and explain why.
Should water sit on a flat roof?
A little water after rain that dries within a day or two is common. Water that sits for days usually means the roof has sagged or was laid without enough fall, and over time it wears the surface out and finds its way in. A new roof can be built with proper falls so water runs off.
Is a new flat roof guaranteed?
Yes. Every new flat roof we fit comes with our 10-year written guarantee. Your written quote sets out what it covers before work starts, and the details are in your paperwork when the job is finished. Before and after photos of the job are yours to keep.
Where this information comes from.
General information, not legal, financial or mortgage advice. Lender, insurer and council rules vary and change, so check with them or a qualified adviser.
You might also need.
Every roofing service we offer.
Find out more →Roof leaks and emergenciesWater coming in now? Start here.
Find out more →Fascias, soffits and guttersEdges and gutters that carry the water away.
Find out more →Schedule a call backTalk it through first, then a free survey if it is needed.
Find out more →Find out if your flat roof can be saved.
A free survey shows you, in photos, before anyone quotes.