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  • FIRST POST
    • aj9648
    • By aj9648 2nd Jul 17, 7:30 PM
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    aj9648
    Is this damp?
    • #1
    • 2nd Jul 17, 7:30 PM
    Is this damp? 2nd Jul 17 at 7:30 PM
    Hi

    This evening as I walked out of dd room I noticed this on the wall:

    https://twitter.com/payrollexcel/status/881578829973684228

    Unless I have been blind I have never seen it before and maybe has come in the last few days.

    The wall in question is part of an extension wall built in the 80's. It over looks the garage and there are drainpipes on the outside. I've never noticed any leaking or blockage of the pipes. I had them cleaned last winter.

    There is also some white 'chalky' stuff on the wall papers that looks like cotton wool. No idea what this is.

    Anyone help to inform me whether this is damp and next course of action?

    Thanks
Page 1
    • Sleazy
    • By Sleazy 2nd Jul 17, 7:31 PM
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    Sleazy
    • #2
    • 2nd Jul 17, 7:31 PM
    • #2
    • 2nd Jul 17, 7:31 PM
    To my non-expert eye, yes.
    • aj9648
    • By aj9648 2nd Jul 17, 8:30 PM
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    aj9648
    • #3
    • 2nd Jul 17, 8:30 PM
    • #3
    • 2nd Jul 17, 8:30 PM
    To my non-expert eye, yes.
    Originally posted by Sleazy
    • FreeBear
    • By FreeBear 2nd Jul 17, 9:36 PM
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    FreeBear
    • #4
    • 2nd Jul 17, 9:36 PM
    • #4
    • 2nd Jul 17, 9:36 PM
    Yup, looks like damp...

    What sort of roof do you have over the affected area ?

    If it is a flat roof, the felt might be cracking or lifting and allowing water to track down the wall.

    If it is a pitched tiled roof, it could be nothing more than a dislodged tile.
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    • aj9648
    • By aj9648 2nd Jul 17, 10:29 PM
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    aj9648
    • #5
    • 2nd Jul 17, 10:29 PM
    • #5
    • 2nd Jul 17, 10:29 PM
    Yup, looks like damp...

    What sort of roof do you have over the affected area ?

    If it is a flat roof, the felt might be cracking or lifting and allowing water to track down the wall.

    If it is a pitched tiled roof, it could be nothing more than a dislodged tile.
    Originally posted by FreeBear
    Yes it's a pitched tiled roof
    • brightontraveller
    • By brightontraveller 3rd Jul 17, 12:22 PM
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    brightontraveller
    • #6
    • 3rd Jul 17, 12:22 PM
    • #6
    • 3rd Jul 17, 12:22 PM
    I,d say leak stain? More intrusion from outside than condensation from within (damp) to start look at roof directly above for breaches ,holes, missing, broken render, tiles, flashings etc then work your way out water can track for quite some distant, Once you identify breaches fill, replace etc Some simulate weather with water .ie hose etc to verify.
    If you cannot identify cause mark with pencil to verify if area increases? occasional freak weather e.g. rain wind in certain direction create ingression which are hard to identify /rectify but happen so rarely there not worth worrying about once area dried repaint., The white fluffy stuff sounds like efflorescence, salt deposits (more common in newly plastered wall) ideally Gypsum plaster should not be used on solid external walls as this situation can arise although salts do not normally appear after a day or two ?
    Last edited by brightontraveller; 03-07-2017 at 12:30 PM.
    • Annie1960
    • By Annie1960 3rd Jul 17, 8:50 PM
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    Annie1960
    • #7
    • 3rd Jul 17, 8:50 PM
    • #7
    • 3rd Jul 17, 8:50 PM
    I agree with brightontraveller that it looks more like a leak than damp.
    I had a stain very like this in my last house, and it turned out the lead flashing was leaking. I had this replaced and then needed to use some stain stopper before re-painting.
    • aj9648
    • By aj9648 5th Jul 17, 12:15 PM
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    aj9648
    • #8
    • 5th Jul 17, 12:15 PM
    • #8
    • 5th Jul 17, 12:15 PM
    The guys who came to have a look both said there were 'salts' coming out. One mentioned looking at the roof - but would need ladders. The other said it was more to do with the plastering.
    • Doozergirl
    • By Doozergirl 5th Jul 17, 12:50 PM
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    Doozergirl
    • #9
    • 5th Jul 17, 12:50 PM
    • #9
    • 5th Jul 17, 12:50 PM
    Is this anywhere near your crack?

    There is no definitive difference between 'leaks' and 'damp'. There is clear evidence of penetrating dampness, we need to find the cause (which could be from a leak)
    Last edited by Doozergirl; 05-07-2017 at 12:55 PM.
    Everything that is supposed to be in heaven is already here on earth.
    • cam12
    • By cam12 5th Jul 17, 12:55 PM
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    cam12
    I don't think that's damp - its a leak.
    • Doozergirl
    • By Doozergirl 5th Jul 17, 1:00 PM
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    Doozergirl
    I don't think that's damp - its a leak.
    Originally posted by cam12
    It is damp. Damp isn't some mythical thing, it is an adjective meaning 'slightly wet'. The wall is slightly wet, therefore it can be described as damp.

    The mythical 'damp' is precisely why people panic about 'damp'. Even rising 'damp' can be caused by a leak, so we can stop nodding our heads over the semantics of it all. They're all words describing the same thing. The differentiating factor is how it happens!

    This is penetrating damp. It may be caused by a leak.
    Everything that is supposed to be in heaven is already here on earth.
    • Doozergirl
    • By Doozergirl 5th Jul 17, 3:04 PM
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    Doozergirl
    Is this anywhere near your crack?
    Originally posted by Doozergirl
    Given that you've just answered this on the other thread, I think it is going to be the main culprit. Penetrating damp from the lack of pointing where the gaps are. Suggest we just continue on that thread.
    Everything that is supposed to be in heaven is already here on earth.
    • aj9648
    • By aj9648 12th Jul 17, 5:19 PM
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    aj9648
    So it's the lead valley that's gone at the edges. But the roof tiles are rosemary and will likely break if stepped on. Brill!!
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