Green Building Bible, Fourth Edition |
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These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment. PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book. |
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Posted By: revorYou knock boards together with a sledgehammer you will see them pulling up tight together this way. You only screw down one edge of each board using special screws that avoid jacking of the board against the joist.
Posted By: Osprey2) Of course the joists have a gap at then end (mainly to isolate from the walls, but I suppose maybe some for expansion) but it makes no sense to add more gap for the chipboard if it is bonded to the joists!The chipboard needs a gap around it just as the joists do. Whether you see it as 'more' or not is a question of words I think.
3) I have seen the phrase 'glue and screw to the joists to form a structural entity' on line, but I cant really see the relevance (or why it is a 'must'). As the chipboard is a different material to the joists, with different expansion rates etc, there will be stresses. Are we trying to overcome the stresses (strong glue) or relieve them (expansion gaps)?The joists have no strength against skew, so the floor is the only thing keeping everything square. Hence the need to bond the floor to the joists. There's no conflict between wanting to keep a car in one piece and not have it hit anything, is there? Same for the floor.
Posted By: OspreySo any expansion is being preventedYou can't prevent expansion! It happens. All you can do is anticipate the effect of that expansion and prepare for it.
Posted By: OspreyPrecisely! So any screwing and gluing is going to fail. And make squeaks.Well clearly you know best so I'll stop trying to help.
Posted By: owlmanAll went well until removing one screw caused a fountain of pressurised mains water.Years ago we were converting an old school building and when the carpenters were replacing the upstairs floorboards they managed to do similar. Great fun for those who didn't have to fix it!
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