Hi everyone.
Am installing OSB3 square edge sheets (8' x 4') x 18mm as a subfloor straight onto joists. I am aware you need to leave a 10mm expansion gap around the edges, but I have read a few pages which recommend a 3mm expansion gap between boards.
Not sure I've ever seen this done before. Is it necessary? I gather with plywood sheets, they are cross bonded and so expand and contract less.
Thanks
Am installing OSB3 square edge sheets (8' x 4') x 18mm as a subfloor straight onto joists. I am aware you need to leave a 10mm expansion gap around the edges, but I have read a few pages which recommend a 3mm expansion gap between boards.
Not sure I've ever seen this done before. Is it necessary? I gather with plywood sheets, they are cross bonded and so expand and contract less.
Thanks