Thank you both, oldbutnotdead and ^woody^ - your thoughts are much appreciated.
1. Its rainwater not rising damp as we only observe the damp after heavy rainfall
2. The builder accepts that cavity wall closer should have been used but claims he was unaware at the time as the work was carried...
Hi from a newbie, please help!
We did an extension recently and at the back of the extension we built a conservatory with the building work done by our builder and coservatory installed by a conservatory company. Over the winter we saw a massive rising damp (please see pictures).
Upon...