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I’m looking for some advice with my penetrating damp issue. Mainly because I don’t really want a damp specialist in during lockdown, so if possible would like to find a remedy to help the situation in the meantime.
I’ve lived in my flat for two years, it’s on the top floor of a large converted 1903 build.
The outside got re decorated 5 years ago.
My first winter in the flat, my internal paint started to bubble and form salts under it- I read that it’s because old houses like this need ‘breathable clay paints’
Anyway it has since got worse and now my floorboards (original pine boards), are sadly rotting away.
I don’t think it helps matters that the window sills have paint flaking off left right and centre. I’ve found a silicate paint designed for old buildings, but have read you can’t paint windowsills when the temperature is below 10 degrees.
What can I do to help prevent further deterioration to my floor before I get someone in the help cure the damp issue? Any suggestions please?
The flat is along the coast so gets an absolute battering from the elements!
I attach photos of the wall and the poor condition of the outside. I believe the walls are solid stone walls
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If the walls surface is damp / wet the floorboard can / may rot?
Other scenario, The floor joist that is embedded in the external wall may ??? have been affected by wood rot, this rot can be transferred to the flooring??
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There's obviously penetrating damp, the blistering and blown wall paint, and the rot damaged floor boards plus the nail heads that can be seen to be rusting.
The rot is serious because its dry rot, notice the white stuff and the tiny decay squares. Dry rot means the problem has been going on for some time, and the damage and a mushroom smell should have been noticed two years ago when the OP moved in.
By now the joists will have been infected and the dry rot will have spread up the walls behind the plaster.
The newish looking skirting boards could have been to replace rotted out, pre-sale skirting boards?
The outside render has been patched painted to blend in. Moisture is probably entering through the render and the stonework.
The stone sill should slope away from the bay and be silicone sealed at the places it touches the window frame and wall reveals, it should have a throating.
Interesting there's no mention of the neighbour's below complaining about damp or rot from above?