Having read most of web site contributors comments on this subject, I am becoming desparingly pessimistic about any solution being possible! We have lived in our Barrett home for eleven years since it was new. The floorboards have squeaked from day one and we went through the builder/NHBC procedure which resulted in their saying nothing could be done! My husband has screwed down every upstairs piece of chipboard which has helped in some places but not in areas where the boards have been cut for access to pipes - it is like a jigsaw puzzle on the landing! We had a two storey extention built this year and low and behold.....the floorboards creak like hell! The builder has returned and put a brace in at one point - it is now worse than ever as it is creaking everywhere else! This is a real nightmare and I would pay anything to resolve it. Any suggestions for a PERMANENT solution?