Flat Roof Repairs · Feltham TW13 & TW14
Flat Roof Repairs In Feltham
Has your Feltham garage roof been patched one too many times?
Garage, porch and extension flat roofs in Hanworth, Feltham Green and Lower Feltham, stripped back and done right
On a Feltham estate you can usually tell how many owners a house has had by counting the layers on the garage roof. Each one added a quick felt overlay when the last one started to drip, and each overlay bought a couple of years. Eventually the deck underneath goes soft and the patching stops working. We see a lot of that in Hanworth and around Feltham Green, on side garages, porch canopies and the single-storey extensions added since. Our default is to strip the old layers off, fix the boards and lay one proper covering. It costs a bit more on the day and a lot less over the next twenty years.
Flat Roof Repairs in Feltham - 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
Feltham garage roofs and a family firm
Layer upon layer of felt on Feltham's garages and porch canopies usually means someone kept choosing the quick fix. Brothers John and Mark, who run Watertight together, often go through the numbers on a flat roof as a pair before recommending an overlay or a strip-back.
It's a family business where the family gets on. Customers often say dealing with the two of them makes a refreshing change, and you'll usually reach one brother if the other is busy.
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
Estate flat roofs, and the overlay habit
Feltham grew fast in the twentieth century, first with interwar semis and then with large postwar estates. Many of those houses came with a flat-roofed side garage, a porch canopy or an outdoor store, and many have since gone from council to private ownership and then to landlords. Flat roofs on rented houses tend to get the cheapest fix available, which is another layer of felt laid straight over the old one.
That works until the boards underneath rot, then every layer above them is wasted money. We strip, inspect and recover so the roof is sound to the joists. The same estates have rows of identical chimney stacks reaching the end of their maintenance cycle together - our chimney repairs in Feltham page covers that side of the roofline.
What we do differently on Feltham flat roofs
Old layers removed
We take the roof back to the boards so the new covering sits on a sound, dry deck, not on three generations of tired felt.
Rotten boards replaced
Any soft decking is cut out and replaced before anything goes on top. You'll see the damage in photos before we charge for it.
Landlord-friendly reports
If you let a house in TW13 or TW14, we'll send photos and a clear quote you can approve remotely, and arrange access with the tenant.
Porch canopies and stores too
Small flat roofs get the same treatment as big ones. A leaking porch canopy rots the front door frame faster than people expect.
Edges that stay put
New trims and drip edges screwed down at close centres, so the wind across the open land round Feltham can't get under the covering.
Guarantee in writing
Ten years on our workmanship, about ten minutes from base, so it's easy to call us back if something isn't right.
"Feltham garage roofs we strip regularly turn out to have two or three overlays on top of the original, and the boards under them are usually past saving."
Watertight Roof Repairs Hounslow - Feltham flat roof repairs jobs
How a Feltham flat roof gets fixed
Give us the basics
Garage, porch or extension, roughly how big, and whether you live there or let it. Landlords can book without being on site.
Count the layers
We cut a small inspection hole or lift an edge to see how many coverings are on there and what the boards are like.
Two prices if it's close
If a repair would genuinely hold, you get that price alongside a full recover, with our honest view of which is better value.
Stripped and recovered
Old layers off, boards repaired, new covering on. A garage is normally a one-day job and we take the waste away.
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
Before you accept a Feltham flat roof quote
Is it an overlay?
Ask straight out whether the old felt is coming off. An overlay is cheaper because it skips the part that matters.
Who checks the boards?
If nobody looks at the deck before quoting, nobody knows whether the new roof is being laid on rot.
What's in the price for waste?
Stripping old felt makes a lot of it. A proper quote includes removal, not a surprise skip charge at the end.
Overlay or strip off: the choice on a Feltham garage
Plenty of Feltham flat roofs are offered an overlay because it's quick. Here's what each route really gets you.
| Comparison point | Strip off and recover | Overlay on the old felt |
|---|---|---|
| Deck checked | Yes, every board is visible once the old layers are off. | No, the boards stay hidden. |
| Weight on the joists | Back to one covering. | Another layer added to what's already there. |
| Trapped moisture | Gone with the old felt. | Sealed in, where it keeps rotting the deck. |
| Price on the day | Higher, because of labour and waste. | Lower, which is its whole appeal. |
| Likely lifespan | Decades with a modern membrane. | Often only a few years before it leaks again. |
Flat roof costs for Feltham homes
A small repair on a sound garage roof is usually a low-hundreds job. Stripping and recovering a single garage tends to land around the low thousands. These Feltham factors move the figure.
How many layers come off
Each extra overlay adds labour and waste. On some Hanworth garages the old felt is thicker than the new covering going on.
Board replacement
Where decking has rotted under years of overlays, we replace it by the sheet. Photos show you exactly how much before you agree.
Matching the neighbours
On estates where every porch canopy matches, owners often want the same finish. We can match a mineral felt look if that matters to you.
Around Feltham between jobs
Feltham is surrounded by green space. Three spots worth knowing about.
Hanworth Park
Learn more about Hanworth Park on Google Maps
Bedfont Lakes Country Park
Learn more about Bedfont Lakes Country Park on Google Maps
Crane Park & the Shot Tower
Learn more about Crane Park & the Shot Tower on Google MapsFeltham, TW13 & TW14
about 10 minutes from base. Planning authority: London Borough of Hounslow.
Flat Roof Repairs in Feltham: your questions
My Feltham garage roof has been patched before. Can it be patched again?
Sometimes, if the boards underneath are still firm and the leak is in one place. But if the roof already has two or three layers and the deck feels soft, another patch is just delaying a recover. We check the boards on the survey and tell you which situation you're in.
I let out a house in Feltham. Can you deal with the tenant?
Yes. We'll arrange a time with your tenant, survey the roof, and send you the photos and quote by email. Once you approve, we book the work directly with them and send completion photos to you.
Do I need planning permission to re-roof a garage in Feltham?
Not for like-for-like replacement. Feltham has very little conservation constraint, and the London Borough of Hounslow treats a re-covering as repair. If you're raising the roof height, adding a pitch or renewing most of a larger roof, building regulations may apply, and we'll tell you if they do.
Can a flat roof be insulated when it's replaced?
Yes, and on a heated extension it may be required once you're renewing more than half of it. We lay rigid insulation on the deck under the new covering, which keeps the room warmer and moves the dew point away from the timber. On an unheated garage it's optional.
My ex-council flat has a flat roof. Who repairs it?
If you bought a flat under Right to Buy, the freeholder - often the council - normally keeps responsibility for the roof and charges leaseholders a share. Check your lease. If you own the whole house, the roof is yours.
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 a straight answer on your Feltham flat roof
We'll check how many layers are on there and what the boards are like, then give you a fixed price to strip and recover - or to repair, if that will genuinely hold.