It is many a moon since I used them but I was very impressed with Tiffin, not least because they said much of the work that other companies quoted for was unnecessary. When we moved twenty-five years later the house was still damp free. Tiffin claim to have been going for centuries though they seem to have undergone a bit of a rebranding since my experience.They are now "Ecotiffin" for what it's worth.Worth asking though.https://www.ecotiffin.co.uk/service/damp-proofing/
Bruce Hammal ● 2d