Flat Roof Repairs · Hayes UB3 & UB4
Flat Roof Repairs In Hayes
Is that old garage roof in Hayes still corrugated sheet?
Extensions, garages and outbuildings in Botwell, Townfield, Hayes End and Wood End, stripped and re-roofed
Hayes was built for the people who worked at its factories, and the houses were put up quickly and economically. That shows on the flat roofs in two ways. The single-storey back extensions added to the terraces since have often been roofed as cheaply as the houses were. And down the garden or beside the house there's frequently an old garage or store with a corrugated grey sheet roof that hasn't been touched in decades. Sheets like that can contain asbestos, so they need handling carefully. We repair extension roofs, replace tired garage roofs with a timber deck and a modern covering, and we're only a few minutes away.
Flat Roof Repairs in Hayes - free survey
Pop your details in and we'll call you back to book the survey. It costs nothing, it obliges you to nothing, and if the honest verdict is that your roof needs no work, that verdict is exactly what you'll get.
Who runs Watertight
Hayes extension roofs, two owners on the case
The single-storey extensions behind Hayes' interwar houses often have thin felt laid on chipboard. Watertight is a family firm, and the brothers who own it, John and Mark, often price a flat roof like that side by side.
Both of them manage the team and run the work, so the person you met at the survey isn't the only one who knows your roof. That's useful when a deck turns out softer than expected and a quick decision is needed.
10 years
Written workmanship guarantee
Free
Surveys, quotes and second opinions
Same day
Response aim for active leaks
TW5 based
Minutes from most of the patch
Economy then, maintenance now
The interwar streets around Botwell and Townfield were laid out for the workers at EMI, Nestlé and the other big Hayes employers. Back extensions came later, often built by owners or small firms, and many of them have a single layer of felt on chipboard with very little fall. Chipboard swells badly when it gets wet, so once water gets through, the deck goes soft quickly.
Older garages and outbuildings often have corrugated cement sheet roofs. Many of those were made with asbestos before it was banned, and broken or weathered sheets need careful handling and proper disposal. The same economy shows on the terraces' chimneys, which our chimney repairs in Hayes page covers.
Why Hayes homeowners use us for flat roofs
Fastest call-out on our patch
Hayes is about eight minutes from base, so surveys and urgent repairs can often be done the same or next day.
Chipboard decks replaced
Swollen chipboard is cut out and replaced with exterior-grade boards that won't collapse at the first leak.
Cement-sheet roofs handled safely
If a garage roof may contain asbestos, we arrange testing and proper removal by people qualified to do it before we fit the new roof.
Falls built in
We add firrings so water runs off, rather than sitting on an extension that was laid nearly flat.
Modern coverings
EPDM or GRP on a new deck, so the roof outlasts the cheap one it replaces by decades.
Ten years, in writing
Our workmanship guarantee covers every flat roof we replace in Hayes.
"Many of the back extension roofs we open up in Hayes are on chipboard, and once it's wet it rarely survives long enough to be worth saving."
Watertight Roof Repairs Hounslow - Hayes flat roof repairs jobs
How a Hayes flat roof gets done
Quick call, quick visit
Tell us what's leaking and where. Because we're close, we can usually come round within a day or two.
Deck and material check
We test the deck, check the falls and, for old garage roofs, look at whether the sheet may contain asbestos.
Clear quote
Fixed price for the roof, with any asbestos testing or removal shown separately so you understand what's involved.
New deck, new roof
Old covering off, deck replaced, falls corrected and new covering on - usually in a day or two.
The guarantee is a document, not a phrase
"All work guaranteed" costs nothing to say, which is why every van in west London says it. What matters is whether anything gets written down. Work arranged through Watertight Roof Repairs Hounslow comes with a 10 year workmanship guarantee as an actual piece of paper - dated, signed, specific to your job - handed over alongside the completion photos. Materials carry their manufacturers' own cover on top, which varies by product, so your paperwork names what applies to yours instead of waving at a number.
A guarantee that long is only affordable if the repairs don't come back - so it shapes how the work is done. Failed material comes off rather than getting covered over. Replacement tiles and slates go on with fixings specified for a roof that lives under the Heathrow approach, not the minimum the 1930s got away with. Junctions get lead. And anything we find that we can't fix that day gets photographed and said out loud, because surprises kept from you now become our problem within 10 years.
Plainly: if water gets back in through work we've done, we return and put it right at no cost, for a decade. Ask any firm quoting against us to match that in writing - it's an interesting conversation to watch.
10 yrs
Workmanship, in writing
£0
Cost of a return visit under it
Insured
Public liability in place
Named
Manufacturer cover per job
Questions for a Hayes flat roof quote
What's the deck made of?
If it's chipboard and it's wet, it needs replacing. Ask whether the quote includes that.
What about the old garage roof?
If it's cement sheet, ask how they'll find out if it contains asbestos and who will remove it.
Is the fall being fixed?
A new covering on a roof with no fall still ponds. Ask whether firrings are included.
Keep the cement-sheet garage roof or replace it?
Many Hayes garages still have their original corrugated sheet roof. Here's how leaving it compares with replacing it with a timber deck and membrane.
| Comparison point | Replace with deck and membrane | Leave the sheet roof in place |
|---|---|---|
| Watertightness | Fully sealed covering with proper edges. | Weathered sheets crack and laps leak. |
| Asbestos | Tested, removed by specialists, gone for good. | Stays put; safe if intact, a risk if damaged. |
| Insulation | Can be added if the garage is used as a room. | None. |
| Cost now | Higher, including any specialist removal. | Nothing now. |
| Best when | The roof leaks, is cracked or you want to use the space. | The sheets are intact and the garage is just storage. |
Flat roof costs in Hayes
Repairs to a sound extension roof are usually a few hundred pounds. Replacing a single garage roof with a new deck and covering is typically in the low thousands. These things move the price in Hayes:
Asbestos testing and removal
If an old cement-sheet roof contains asbestos, testing and safe removal add to the cost. We show this separately so it's clear.
Chipboard replacement
On many Hayes extensions the whole deck needs replacing. We price it by the board and show you the damage first.
Short travel time
Being close to Hayes keeps our travel time down, which helps on small jobs where travel is a bigger share of the cost.
Around Hayes between jobs
Hayes has more green space and canal than people expect. Three to explore.
Barra Hall Park
Learn more about Barra Hall Park on Google Maps
Grand Union Canal at Bulls Bridge
Learn more about Grand Union Canal at Bulls Bridge on Google Maps
Minet Country Park
Learn more about Minet Country Park on Google MapsHayes, UB3 & UB4
about 8 minutes from base. Planning authority: Hillingdon Council.
Flat Roof Repairs in Hayes: your questions
Does my Hayes garage roof contain asbestos?
It might. Corrugated cement sheets made before asbestos was banned in the UK often contain it. You can't tell by looking. If the sheet is intact and left alone it's low risk, but if it's cracked or being removed it should be tested and handled by people trained for it. We arrange that before replacing the roof.
Why has my extension roof gone soft?
Often because the deck is chipboard and water has got in. Chipboard swells and loses strength when wet. Once it's soft, a new covering won't fix it - the deck has to be replaced with exterior-grade board.
Do I need permission to replace a flat roof in Hayes?
Like-for-like replacement on a house doesn't need planning permission. Hillingdon Council has conservation areas around the old Botwell factory sites - Botwell: Thorn EMI and Botwell: Nestlés - but most Hayes housing streets have no conservation constraint. Renewing most of a heated extension roof may bring building regulations into play for insulation, which we'd include.
How quickly can you get to a leaking roof in Hayes?
Hayes is our fastest area, roughly eight minutes from base. For a leak that's coming through now, we can usually get there quickly to make it safe, then come back for the full repair.
Can a garage roof be insulated?
Yes, when it's replaced. We fit insulation board on the deck under the new covering, which makes sense if you use the garage as a gym, workshop or utility.
What the patch says about us
Homeowners from Cranford to Hayes on how their jobs actually went.
"Woke up to tiles all over the front garden and not a breath of wind - couldn't work it out. They came the same morning, made it safe, and were the ones who told us it looked like vortex damage from the planes and that Heathrow has a scheme for exactly this. Helped us photograph everything properly for the claim. Could easily have just charged us for a repair and said nothing. That honesty is why I'm writing this."
"Our loft conversion started leaking around the dormer two winters after the conversion company vanished. Two roofers quoted big money to strip the whole dormer roof. These guys traced it to one badly-lapped flashing on the cheek, showed me the photo, fixed it in half a day. It's been through every storm since bone dry. The difference was they looked before they priced."
"Called them expecting to be told the roof needed doing - the house is 1936 and the ridge had been dropping mortar crumbs for a while. Survey verdict: re-bed the ridge, replace five tiles, and the rest is good for years yet. They even marked two tiles to keep an eye on. Quote was a fifth of what I'd braced for. When the roof does eventually need doing, they've earned that job."
"Water started coming through the back bedroom ceiling at 7am on a Sunday. Rang around - one lot quoted a £180 call-out before they'd even start. This firm answered, talked me through switching off the lights circuit and where to put the buckets, and was here by half nine. Told me the Sunday rate up front, made it dry, came back Tuesday and did the proper repair for a very fair price. Kept every promise they made on the phone."
"Had the fascias, soffits and gutters done on our terrace. What sold me was the survey - they pushed a screwdriver into the old boards to show me which were actually rotten and which were fine, then quoted to replace only what needed it. Other quotes were for capping over the lot, which they explained the problem with. Work was neat, gutters run properly for the first time in years, and the guarantee arrived as a proper document."
Had us out to your roof?
Two minutes writing a review does more for a small local firm than any advert we could buy - and it helps the next west London household with a drip find someone straight.
Areas we cover
Flat Roof Repairs by town
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Get your Hayes flat roof sorted
We're close by, so the survey is quick. We'll check the deck, look at any old sheet roofing and give you a clear fixed price.