Damp Proofing

Damp proof, replastering and rendering done 4 years ago: now cracks and inside wall black with mould.

Anonymous user 03/03/2024 - 2.55 PM

Hi 4 years ago the previous owners of our 1850's end terrace had work done to the house to erradicate a damp problem. Now 4 years on there are large black circles under the wallpaper coming through. I have looked at the outside of the house and noticed that there are large cracks directly outside where the black mould has appeared. Some builders have had a look for me and said that the rendoring has not been finished off properly, one said it has been done in 2 halves causing the cracks and another has said that because the rendering has been done up to the top of the bedroom ceiling and not up to where the roof is the rain is hitting the wall and sitting on this ridge where the rendering has gone up to causing the cracks, the builder said the company who did it should have tiled this ridge so the rain would flow back down instead of sitting there. I have spoken to the company who say they have no guarantee and it is our problem but if this is job that has been done to poor standards I will get others involved. We have only been in the house 10 months and this was not picked up by the surveyor. Would anyone be able to give some helpful advice please? Thank you.