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JLC • NEW ENGLAND EDITION • DECEMBER 1994 Subfloor Suggestions To the Editor: I appreciated the article "A Guide to Construction Adhesives" (9/94). It is my understanding, however, that plywood and OSB should always be installed with spaces between sheets for expansion. I am just now beginning a major project on an unfinished house that has had the floors installed just as in the article — that is, glued and nailed to the joists, with the tongue-and-groove joints also glued, and without any spaces between sheets. In this case, one-inch OSB was used. There is some swelling at the joints, most of which seems to be from excess adhesive. My plan was to sand the joints flush, then install