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  • you need to find the source of the damp before just painting over it

    Nothing on the other side of the wall thats obvious? blown render, gutters etc?Otherwise it is probably condensation forming on cold walls

  • It's just above ground level, maybe a foot and a bit up, outside looks sound, but that side of the house gets no sun as in-between houses, and all the plaster on the inside is a mess as apparently when the houses were built it was plastered mid winter, and in a hurry ( were taking 1950s here, so some of the materials were a bit 'experimental'. Condensation was a right fucker last winter, but the loft is much better insulated now, the radiators are better,
    and the rest is getting plastered too so that should help with warmth and I'm retrofitting trickle vents in some windows too so that should help with breathability etc. The house had next to no proper upkeep for the last few years, so I will repoint that wall in summer as some other areas need it. I've used the Jewson's silicon damp proof stuff before on a similar age building ( 50s council flat) and it worked a treat

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