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2020's last laugh: a leaking roof. Advice please.


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5 hours ago, Russdl said:

 

Yep, it's @AliG that has one, perhaps he can advise on its potential to trace that drip?

Wish I could help. But with that much insulation in the roof I would think the temperature is going to be very uniform. The camera would probably show the wet area as a little cooler but it wouldn’t show a small hole above 300mm of insulation. 
 

As the plasterboard is on a slope, water hitting the top of it will run down it until it finds a hole or a barrier where it gathers so it might well be that the issue is much higher up than where the drip can be seen.

 

 

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I wonder if it can be put down to one-off madness?

 

A house we did the customer noticed a small water mark on the ceiling after about 3 months.  I got the roofers back.  They unzipped the standing seam panels.  No sign of damp.  Insulation dry.  Panels were zipped back on and 7 years later there have been no recurrences.

 

I suspect it could have been some moisture in the structure that got in during construction and condensed out later.

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