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littlespark

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For the 3rd time in 3 years since my extension was built, I’ve got water stains on my ceiling. Only happens when it’s really hard rain, and today it’s absolutely p**sing down.
Spoken to main contractor who did the job. Reply is always phone the roofer. Done that last time and he had resealed it a couple of times.
Water still comes through the same bit of ceiling.
C95F2B8C-9C47-42AC-B0CF-57C28D5F9BF2.jpeg

That’s the living room ceiling. It’s also coming in through the porch.

Kind of soul destroying when you spend a lot of money on something and it’s never right. I’m now hoping it doesn’t burst through and wreck the new sofa
 

davesparks

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Kind of soul destroying when you spend a lot of money on something and it’s never right. I’m now hoping it doesn’t burst through and wreck the new sofa
put a small hole in the ceiling where it's wet and let any collected water drain into a bucket if you suspect that there may be a puddle on top of the ceiling.
 

Midwest

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Is it a flat roof?
 

buzzlightyear

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reason for that ,either there is no pitch or water is getting under the lead flashing .
get on the roof and look at it .
 

buzzlightyear

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For the 3rd time in 3 years since my extension was built
1st time you can understand ,second time mmmm, third time what the f**k. :mad:
 

remedial

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Trainee
Spoken to main contractor who did the job. Reply is always phone the roofer.
isn't it up to the main contractor to phone the roofer? also, you're probably due a major repair instead of a patch up at this stage. was the work guaranteed? if its not being fixed properly you're within your rights to get someone else to fix it and send them the bill. of course getting the money off them would be a whole other story
 
As others have asked is it a flat or a pitched roof? Do you know where it's getting in? That can be difficult to discern as water often runs about internally before coming through exactly where your new sofa is :)

Any pictures of the external structure?

If it only happens in very heavy rain maybe the gutters are overflowing and it's getting in under a soffit, or there's dodgy flashing on a flat roof - flat roofs always leak! Or if it's only when it's windy as well, maybe water is being blown up under flashing not properly dressed to tiles.

If there is flashing check it's proper Code 4 product, not the sticky-backed [email protected] which always rips or falls off after a few years.

Initial thoughts. I hate roofing.
 
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S

Silly Sausage

put a small hole in the ceiling where it's wet and let any collected water drain into a bucket if you suspect that there may be a puddle on top of the ceiling.
Thanks for that, Dave!
Just seems a curious, random piece of advice though :oops::D
 
put a small hole in the ceiling where it's wet and let any collected water drain into a bucket if you suspect that there may be a puddle on top of the ceiling.
Thanks for that, Dave!
Just seems a curious, random piece of advice though :oops::D
:) No it's not: that's an excellent piece of advice. If it's moisture-resistant foil-backed plasterboard there may be Lake Victoria up there, which needs draining off before the whole ceiling suddenly crashes down.
 
Are we looking at an old external cavity wall that's been knocked through to your extension? If so, I'd say good chance the leak is coming from higher up, main roof rather than extension, and is dripping down the cavity. May have been there for years but never showed up till you extended, as was dripping down to the bottom of the cavity.
 

Midwest

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Are we looking at an old external cavity wall that's been knocked through to your extension? If so, I'd say good chance the leak is coming from higher up, main roof rather than extension, and is dripping down the cavity. May have been there for years but never showed up till you extended, as was dripping down to the bottom of the cavity.
Builder would of been a bit naughty then, not putting cavity trays in.
 

remedial

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The leak could be anywhere. I had something like this where the water ran along the rsj from the side wall until it hit something and dripped down
 

davesparks

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Thanks for that, Dave!
Just seems a curious, random piece of advice though :oops::D
The OP said they were hoping it didn't burst through and wreck the new sofa, so it appeared they hadn't worked out how to drain the water from the ceiling to prevent that happening.
 

ruston

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The leak could be anywhere. I had something like this where the water ran along the rsj from the side wall until it hit something and dripped down
Looking at the pic it looks like it is in the RSJ boxing.
You are correct though , it could be travelling from anywhere.
 

telectrix

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does appear it's coming down cavity from main roof. gutters blocked by moss etc.???? we get a lot of that. has to be cleared every 12 months.
 
O

Octopus

We’ve got water entering our chimney and dripping on the stop plate. My mate who fitted the flue took a look a while back and is happy to look again.

As our extension is over 3 years old, I’ve rung a local roofer I know and will see what he says.

If it costs me a few quid to have the job fixed properly, I’m happy with that
 

littlespark

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  • Thread Starter Thread Starter
  • #20
Wow, I didn't know we had so many roofers on this forum.

A little bit of background before I take more photos.
The house is timber frame, approx. 11 years old. 3 years ago we had an extension built which doubled the size of that particular room and added a porch at the front door.
Sloped roof, correct angle and proper roof tiles.
There is an RSJ in there. A window was removed, the hole made bigger.
The 2 wet patches you can see on the boxing are either side of the bedroom window above.
The roofer says the lead flashing is close to the underside of the stone sill of the window and water is creeping over the lead and working its way in.
He says it only happens with driving rain? Yes... but its Scotland... the rain is always driving. That's no excuse.
This doesn't explain the water marks in the porch, which was the old front door, just the old framing taken out, wall boarded over and an interior door and frame put in. The old front door was moved to the new front wall.
There is a window above this leak as well, but its much higher than the lead flashing.
On another note. The bedroom window above is now suffering from excessive condensation, causing black mould on the white sealant around the UPVC window.
It really only started when the extension was built.
Could this be connected to a lack of ventilation in the new roofspace above the extension?
 

buzzlightyear

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Wow, I didn't know we had so many roofers on this forum.
you should called us not the builder ,lol, is it a house or a submarine you have .
 
Could this be connected to a lack of ventilation in the new roofspace above the extension?
Did you have a nice draughty back-door before modern extension was fitted?
(Do you have any upstairs en-suites sitting on weirdly placed RSJs ! -
Looking for excuse to blame another dept )
 

littlespark

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  • Thread Starter Thread Starter
  • #26
This is a photo from the porch.
I’m not going outside again to take a photo. Still raining

FDA22290-7EDF-41D8-81FC-9891AEEC0DEE.jpeg

My wife now wants all the tiles off to check the woodwork isn’t rotten underneath.
I’ll have to look out the paperwork regarding a warranty, but would it already have 10 years the same as NHBC?
 

telectrix

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watch
 
T

The Ghost

I would be loathe to do investigatory work of such a nature at this stage. The wood will in no way be rotten any timber in there will be C24 structural grade and treated it would take several years for any rot to appear. I would talk with your insurers about it first and see what advice they offer and whether they would be prepared to meet costs of the leak as you should be insured for that. Clearly some fine detail work has been neglected or it could be the leak was present under the house builders aegis or poor workmanship to put it in common parlance.
 
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