Flat Roof Repairs · Carlisle & Cumbria
Flat Roof Repairs In Carlisle
Is your extension or garage roof leaking again?
We fix the fall as well as the covering, so the water actually leaves
Most failed flat roofs in Carlisle are not failed because the covering was cheap. They failed because the water had nowhere to go. A flat roof is not flat - it should fall roughly 1:80 towards an outlet, and if it does not, water sits. Standing water finds every seam, freezes and expands in winter, and grows a layer of silt and moss that holds it there permanently. Patch that and you buy a year. We look at where the water is going before we look at what it is going over, because a new covering laid over a dead flat deck will fail in the same place as the old one.
Free Flat Roof Repairs Quote
Tell us what the roof is doing and we will come out, take a proper look and give you a free, no-obligation quote. If it does not need fixing, we will tell you that too.
1,000+
Roof repairs completed
10 Year
Written workmanship guarantee
Repairs First
Fixed before you are sold a new roof
Free
Roof surveys and quotes
Why Choose Us For Flat Roof Repairs In Carlisle?
We sort the falls out
If the deck has sagged or was never laid to a fall, we build the fall back with firrings or tapered insulation. Otherwise you are paying for a new covering that will pond exactly like the old one.
EPDM, GRP or felt - whichever fits
Single-piece EPDM rubber suits most domestic extensions with no seams to fail. GRP fibreglass is good where there are complex upstands. High-performance torch-on felt still has its place. We recommend by roof, not by what we prefer to fit.
Upstands and trims done properly
Flat roofs almost never leak in the middle. They leak at the edge - where the covering turns up a wall, meets a door threshold or runs into a gutter trim. That detail is where we spend the time.
Outlets that actually clear
An undersized or blocked outlet will drown a perfectly good roof. We check the outlet size, the fall towards it and whether the rainwater goods below can take what comes off.
Honest about patching
A single split in an otherwise sound covering is worth patching. A covering that has been patched five times is not, and we will show you why on the roof rather than argue about it on paper.
Cold Cumbrian winters accounted for
Freeze-thaw is what turns a small blister into a split here. Standing water that freezes overnight lifts seams a little further every cycle, which is why flat roofs in Cumbria go faster than the same roof in the south.
"The flat roofs we get called to in Carlisle are overwhelmingly on 1970s and 80s rear extensions and garages - a generation of roofs laid in pour-and-roll felt that has now been patched to the end of its life."
Based on the flat roof repairs jobs handled by Roof Repairs Carlisle
Our Flat Roof Repairs Process
Your Call
What is the roof doing, when did it start, and does it change with the weather? Five minutes on the phone often tells us where to look before we arrive.
Free Roof Survey
We get up and look, and get into the loft where we can. On a leak that means tracing the water back to where it enters, not just looking at the stain.
Written Quote
Itemised and fixed, with access costs shown separately so you can see what is work and what is scaffold.
Safe Access
Ladder, tower or scaffold depending on the height, the pitch and how long we need to be up there. We price the right one rather than the cheapest.
Strip Back To Sound Material
We take back the failed area to something solid. Repairs made on top of perished mortar or rotten timber do not hold, however good the new material is.
The Repair Itself
Matched slates and tiles, code 4 lead where lead belongs, the correct mortar for the masonry. Like for like, so the repair does not stand out from the street.
Check What Is Around It
Flashings, valleys, ridge and the gutter below. Whatever caused this failure has usually been working on its neighbours too.
Clean Up And Guarantee
Everything cleared away, photographs of the finished work, and your written workmanship guarantee before we leave.
The 10 Year Workmanship Guarantee
A roof repair is only worth having if it holds. Every repair carried out through Roof Repairs Carlisle comes with a written 10 year workmanship guarantee, and the materials used - slates, tiles, lead, mortar, membranes and rainwater goods - carry their own manufacturer's warranty on top. You are told exactly what is covered before the work starts, in plain English, not buried in small print.
The reason repairs fail is almost never the patch itself. It is that nobody found the actual source of the water. A stain on a Carlisle bedroom ceiling is often a metre or more from the real fault, because water runs down a rafter before it drops. It gets traced properly first. If the same leak returns within the guarantee period, it gets put right at no cost to you.
10 Year
Workmanship Guarantee
1,000+
Repairs Completed
Insured
Public Liability Cover
Materials
Manufacturer Warranty
What To Look For In A Flat Roof Repairs Specialist
Did they go up and look at the falls?
The single most useful thing anyone can do on a flat roof is stand on it after rain and see where the water is sitting. If a quote arrives without anyone having done that, it is a price for a covering, not a solution to your leak.
What are they proposing at the edges?
Ask specifically what happens where the roof meets the house wall, and what trim goes on the outside edge. Vague answers here are the tell. This is where the leak will be, and a good roofer will already have a clear view on it.
Is the guarantee on the installation or just the material?
EPDM membranes carry long manufacturer warranties, and firms quote those numbers because they sound impressive. But the membrane is rarely what fails - the installation is. Ask what the workmanship guarantee is, separately.
Flat Roof Coverings Compared
| Comparison point | Flat Roof Repairs | Built-Up Felt |
|---|---|---|
| Typical lifespan | EPDM rubber: 25 - 30 years | Modern torch-on felt: 15 - 20 years |
| Seams | Often a single sheet with no field seams | Lapped and bonded throughout |
| Cost | Higher up front | Cheapest per square metre to install |
| Repairability | Patches bond well to existing membrane | Easy to patch, which is why they get over-patched |
| Handles ponding | Tolerates it better, but still should not pond | Ponding is what kills felt roofs |
| Best for | Extensions, dormers, garages, most domestic work | Budget jobs and outbuildings |
Ponding, Blisters And Why Felt Roofs Fail Here
If you can see a puddle on your flat roof more than 48 hours after it stopped raining, you have a ponding problem and it will be the cause of your next leak. Ponding does three things. It holds water against the seams until it finds a way in. It grows silt and moss which keeps that area permanently damp. And in a Cumbrian winter it freezes, expands, and levers the seam open a little further each time - one of the reasons flat roofs this far north tend not to reach the lifespans quoted in the brochures. Blisters are a related symptom: moisture trapped under the covering turning to vapour in the sun and lifting it. Neither is fixed by more sealant. Both are fixed by getting the water off the roof.
See what a roof repair costs in CarlisleFlat Roof Repairs Cost In Carlisle
A localised flat roof repair - a split seam, a failed upstand, a blocked outlet - typically costs £180 to £500 in Carlisle. Re-covering a small extension or garage roof in EPDM generally runs £1,200 to £2,800 depending on size, how much deck needs replacing and whether the falls need rebuilding. We price the deck work separately so you can see what you are paying for.
See The Full Cost GuideFlat Roof Repairs - Frequently Asked Questions
How long should a flat roof last?
A well-laid EPDM rubber roof should give 25 to 30 years, GRP fibreglass something similar, and modern torch-on felt 15 to 20. Those numbers assume the water leaves the roof. On a roof that ponds, halve them - and in Cumbria, where freeze-thaw works on standing water all winter, halve them again.
Can you repair a flat roof or does it all need replacing?
It depends on how many times it has been repaired already. One clean split in an otherwise sound covering is a straightforward patch. A roof carrying five previous patches, with soft spots underfoot where the deck has gone, is past repair - you would be paying to postpone the same conversation by a year.
What is the puddle on my flat roof and does it matter?
It is called ponding and yes, it matters more than almost anything else. Water still sitting there two days after the rain stopped means the roof does not drain, and that standing water is what will eventually find the seam. Fixing the fall is the repair; recovering over a dead flat deck is not.
Is EPDM rubber better than felt?
For most domestic extensions in Carlisle, yes. It goes on as a single sheet so there are no field seams to fail, it handles temperature swings well, and it lasts considerably longer. Felt is cheaper on day one, which is the whole of its argument.
Do I need building regulations approval for a flat roof?
If you are replacing more than 25% of the roof covering, building regulations apply and the roof normally has to be upgraded to current insulation standards at the same time. That is a Cumberland Council matter for Carlisle. A straightforward repair is maintenance and does not need approval.
My flat roof is bouncy to walk on. Is that bad?
Yes. Softness or spring underfoot means the deck below the covering has taken water and the boards are rotting. Covering over that is a waste of money - the new membrane has nothing solid to sit on. The deck needs cutting out and replacing before anything goes over the top.
Also worth a look: Roof Leak Repairs ·Guttering
Where We Cover
Flat Roof Repairs across Carlisle and the surrounding area, from the city's sandstone terraces out to the border villages and down into the Eden Valley and the Lakes.
What Carlisle Homeowners Say
Feedback from customers across Carlisle and the surrounding villages, on completed roof repair work.
"Water was coming through the landing ceiling of our sandstone terrace in Denton Holme every time the wind came from the west. Two other roofers had patched the spot above the stain and it kept coming back. These lads got up there, found the split lead soaker where the roof meets next door's gable, and that was the end of it. Should have called them first."
"Half a dozen slates came off the back of the house in Stanwix after a rough night. Rang at eight in the morning, someone was on the roof by lunchtime and it was made watertight the same day. Came back later in the week to do it properly with matching slates. No silly emergency pricing either."
"The flat roof over our kitchen extension in Harraby had been patched with felt so many times it was more patch than roof. They stripped it back, sorted the falls out so the water actually runs off, and fitted a rubber roof. First winter with no bucket in the kitchen in about four years."
"Our chimney in Botcherby was letting damp into the back bedroom. What I appreciated was being told the stack itself was sound and only needed repointing and new flashings, rather than being talked into taking the whole thing down. Honest, tidy, and the price on the quote was the price on the bill."
"Gutters on our bungalow out at Dalston were overflowing down the wall and starting to mark the render. They cleared them, replaced a cracked section and refitted the brackets where they had dropped. Explained what had caused it rather than just taking the money and going."
Had work done by us?
We would rather earn the next job than talk about the last one. If we have been out to your roof, a quick review helps other people in Carlisle find us.
Get A Free Flat Roof Repairs Quote
Ring us and describe what the roof is doing, or send a message and we will come out and take a proper look. Free survey, fixed written quote, and a straight answer on whether it needs doing at all.