Sentence:  But I must warn you that chipboard floors are always likely to squeak. The material is still being used in new-builds, but developers now use adhesive to bed and <WSD>joint</WSD> it, rather than screws or nails. I suspect the adhesive will eventually embrittle and crack, resulting in the same squeaking problems as before. 
Meaning of the word marked with <WSD> tags:  To unite by a joint or joints; to fit together; to prepare so as to fit together