I’m putting up a large roof with trusses (DYIer) and wondered about the plywood spacing. I understand it is recommended that I use a little metal spacer between sheets to allow for expansion. Although the spacer is very thin, I’m covering a 24′ x 52′ (each side) roof; that’s a lot of sheets (about 42 each side). That’s 6 spacers, both vertically and horizontally. If I assume 1/16th for the spacer, that’s a little less than 1/2″ space accumulation. Shouldn’t I adjust the trusses to accommodate that distance so the spaces stay centered over the trusses centers? Or am I wondering over nothing? That’s 27 trusses on 24″ centers. I would appreciate any comments or advice here; I really don’t need to make a mistake. Thanks
For more information, please visit plywood spacers.
Want more information on plastic mesh for concrete? Feel free to contact us.
There is no real reason to put a spacer between the joists when sistering them. Usually using some 1/2 plywood between dimensional lumber is to correct the thickness to vertical lumber dimensions, like on a header over a door. If you were to add a spacer, I would use plywood as OSB has much less sheer strength. Adding some plywood will add a bit more strength, but in your case, may not make a difference.
If you want to learn more, please visit our website plastic wing.