Squeeky Floorboards

rmb282

If you don't need to get in under your floorboards and your certain that it is the boards squeaking against one another, then you could use a polyurethane glue, such as this; http://www.screwfix.com/app/sfd/cat/pro.jsp?id=63109&ts=19585

It expands a bit like expanding foam, and will bind the boards together stronger than the wood itself.

Its worked for me, I used it on a house that has underfloor heating and didn't want to chance using screws