external wall

Hi all, I’m looking for opinions and advice as to what the issue I am experiencing is and a solution for it. Please see my attached photos; a section of the exterior wall under my bay window has what looks to me a damp patch (particularly worse when it rains, as it is today when these photos...

Hi all, Newbie here. I have very recently had an internal garage conversion completed on 14 year old detached house. The long external wall was insulated with 50mm celotex boards, drylined and then skimmed. 3 of the 4 walls were complete well over 2 weeks ago and the plaster has dried out...