Damp prob help!!!

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S a plastering

S a plastering

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Went to look at some walls in a bedroom with big damp patches on them This is a 1940s detached house in good nick the pointing is very good new gutters roofs been checked out is ok
What I've suggested is knock plaster off then put a 25mm celotex to the wall battened over then plasterboard would you say this would be ok I'm thinking that this external wall is very cold causing a moisture build up can't see where it could be coming from any advice or methods please got me a bit baffled cheers oh I've had the head on my shoulder we haven't got much money either haha
 
madmonk said:
Went to look at some walls in a bedroom with big damp patches on them This is a 1940s detached house in good nick the pointing is very good new gutters roofs been checked out is ok
What I've suggested is knock plaster off then put a 25mm celotex to the wall battened over then plasterboard would you say this would be ok I'm thinking that this external wall is very cold causing a moisture build up can't see where it could be coming from any advice or methods please got me a bit baffled cheers oh I've had the head on my shoulder we haven't got much money either haha
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Is it damp tho or condensation?
 
It's not black gone black so don't think it's condensation but also if it's penetrating damp I can't see for the life of me how it's getting in like I said the bricks are fine pointing roof etc this damp problem is affecting the whole gable wall which has two external chimney stacks both bedrooms and living room downstairs
 
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Damp prob help!!!
 
Have you been on the roof to check it out? It's not unusual for a gable to have problems when the timbers shift and expose the top of the wall or create tile gaps. The other thing I'd want to get up and check would be the 'new gutters'.

I suppose the other thing would be the pointing. You say it's good, so it's very unlikely it's the original soft sand or lime from the '40s. If it's cement pointing on a 9" gable that will cause the water to penetrate in rather than evaporate out.

Then there's the chimney issue. If the flaunching is damaged, or the pots cracked the liners will make the problem worse as there's no air flow in the chimney. When the liner cools condensation forms on it, either from the air or a leak into the chimney and soaks out from there.

It may be an easy cheap fix, but it's unlikely and definitely needs looking into. As for the 'we haven't got much money' routine, it's really got nothing to do with how much it costs to put right.
 
madmonk said:
Hi mate chimney both got rebuilt in the summer and new lead flashings can't see it being that
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The thing I'm getting at is that the water's coming from somewhere. So it doesn't matter if the house was built new last week, if the wall's damp on the ground and first floors then it's coming from above. So something's wrong somewhere up top, and until that problem's found and fixed it doesn't matter what you put on the inside as it will fail eventually. Battens will rot, interstitial condensation will build up and escape somewhere, the mortar will degrade and crumble, joist ends will rot, etc. etc.
 
This is what I've said to him I'm going to knock all the plaster off in the bedroom then leave it a month an let him see esp if it rains can he see anything coming through other than that fuuk it I'm not interested get some other f**k*r to sort it I've got enough on
 
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