Hi, we had our loft space converted and since the plastering & painting of the chimney breast there is a permanent moisture issue in the center of the chimney breast. It ranges between 22-29% and hasn't improved for the past 5-6 months. The moisture expands from the top of the chimney breast on 1st floor bedroom and pretty much all the way to roof height in the loft bedroom above. There is no moisture downstairs in the ground floor chimney. The chimney was little wet while the roof was constructed, as some rain penetrated. The flashings have been checked and all looks perfectly fine. I was thinking that there might be some leak from the central heating but that wouldn't explain why there is water to the very top of the house by the ceiling.
I was told that there might be an issue with salts as a results if burning fossil fuel which penetrated the chimney and now attracts moisture from the outside. To be fair I think if I was to repaint the wall I will probably never notice anything again but I am worried that there is an underlying issue. My builder said that he doesn't know what the problem might be but he suggested that he could repaint it or even plaster it etc. The wall has been painted with emulsion paint which I don't know how much it helped if there was a moisture issue.
Do you think that if I leave the wall as it stands the problem will eventually go away (even after 2 years say). I don't want more hassle in the house to be honest/ redecorating or plastering again. Does anyone have any advise please? Thank you.
I was told that there might be an issue with salts as a results if burning fossil fuel which penetrated the chimney and now attracts moisture from the outside. To be fair I think if I was to repaint the wall I will probably never notice anything again but I am worried that there is an underlying issue. My builder said that he doesn't know what the problem might be but he suggested that he could repaint it or even plaster it etc. The wall has been painted with emulsion paint which I don't know how much it helped if there was a moisture issue.
Do you think that if I leave the wall as it stands the problem will eventually go away (even after 2 years say). I don't want more hassle in the house to be honest/ redecorating or plastering again. Does anyone have any advise please? Thank you.
