I have noisy stairs. A while ago a mate who is a builder told me about this specialised glue foam which you apply to the joints. Apparently it expands, sticks to the wood then contracts again pulling the joint tighter (and stopping the creaks).
The problem is, he could only remember that it was a german product, nothing helpful like the name or anything.
My google skills have let me down and I can't find anything that looks likely.
Has anyone come across anything like this? Anyone used it?
Any help much appreciated