
Nish Maroo
Hello Helen, I don't think you need a builder to sort this out, I would recommend you calling three damp proofing company that are local in your area and get the idea and quote from them. I hope this shall be a good idea to do so. Thank you for join in the Rated People forum and I am happy to answer any more question you may have. Regards, Nish Maroo - Sussex Properties Solutions- Kingston Upon Thames