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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Damp inside loft wall
I live in the top flat in a converted Victoria house dating from about 1850
which has a lot of damp problems. There is a lot of water damage to the inside of the gable wall in the loft. The wall is basically brick and aggregate which is literally crumbling away (in the worst place, about 10cm depth of brick is missing). I want to repair the wall. My first thought was to apply some sort of damp seal to the wall, then some mortar. However, if damp is coming through the wall, this could make matters worse by trapping moisture. My current thinking is maybe I should repair using a lime mortar without any damp seal. From what I can make out, the last time the exterior wall was decorated was in 2000. Where necessary, render was repaired using cement render and painted with an oil-based paint. I've used quite a bit of bitumen paint around the chimney stacks and top of the gable wall. There are no obvious points where water is penetrating (no windows, no guttering etc.). Thoughts? thanks, Andrew |
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