Members have reported getting cold telephone calls from a company in Nottingham, despite being on the Telephone Preference Service. The company is selling damp-proofing of walls and arranging for salespeople to call. They give the impression that they know that your home is affected.
Professional advice is that damp-proofing is only needed where a problem with damp has been identified and not needed in the majority of houses.
You should to be very cautious and get separate advice if a cold caller of this type tells you that you are one of those affected. In any case, you should always seek several quotations from reputable firms with whom YOU have initiated contact.
NEVER be pressurised into signing up on the spot and remember that you have a cooling-off period during which you can change your mind if the agreement was signed in your home.