2007-03-19 12:42:37 · 15 answers · asked by theemover 1 in Home & Garden ➔ Do It Yourself (DIY)
When I built the addition to my house, I used 7/16" OSB for roof and the walls.
My building inspector recommended the use of OSB because it is cheaper than plywood, more environmentally friendly bacuase it can be made from smaller trees and can hold up to weather if you don't get your roof on right away..
2007-03-19 17:53:24 · answer #1 · answered by Ben D 3 · 0⤊ 0⤋
Osb Roof Sheathing
2016-10-05 09:58:30 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Hi. It depends on what exactly you are building and where your building it. If you are building a shed or garage, 7/16 OSB will be ok. For a living space, 1/2 OSB is recommended and in some regions building code will dictate what you can and can't use. 5/8 OSB would give you the most stiff and durable roof deck, some carpenters think that 5/8 is "overkill". You should also check the warranty on the shingles you are going to use, some manufacturers require specific deck materials in order to honor warranties.
2007-03-19 13:27:48 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It depends on the spacing of the roof rafters. If they are 16" on center, the minimum thickness should be 1/2". That is the most common practice.
However, with the current down trend in home building, the price of 1/2" 3 ply and 4 ply plywood, is half of what it was last year. I personally would only use OSB for side walls and 1/2" plywood on the roof. Whichever you decide to use, make certain you put the spacers in, in each course, to allow for expansion.
2007-03-19 12:54:41 · answer #4 · answered by billy brite 6 · 0⤊ 0⤋
You're getting a lot of good answers, but there is more to consider. Are you just putting 3-tab asphalt shingles on your roof? In that case, the 7/16" OSB may be fine (if that's what your local code allows), but if you're putting up clay or slate, you know that isn't going to cut it.
2007-03-19 18:53:13 · answer #5 · answered by DA 5 · 0⤊ 0⤋
Most lumber stores sell 7/16" OSB for roofs and is the most economical. If you can find actual 1/2" plywood, that would be better assuming you have 16" center rafters. If you have 24" centers I'd use 3/4" plywood for the roof.
2007-03-19 12:51:55 · answer #6 · answered by Concerned 3 · 0⤊ 1⤋
Go with gary on this one. 7/16" osb with h-clips with rafters 24" oc. That being said, call the local building department. Here 7/16" is standard, but I'd assume it may be different in other regions. To the north, assuming heavier snow loads, they may require 5/8" or 3/4". I don't know. Like I said call the building department. They will help you.
2007-03-19 17:34:45 · answer #7 · answered by robling_dwrdesign 5 · 0⤊ 0⤋
5/8 here in michigan, we get plenty of snow here too and thats what is code, 3/4 is way too much, it is a big pain to haul around on a roof. But check you local codes though first
2007-03-21 15:11:10 · answer #8 · answered by svindoctor 1 · 0⤊ 0⤋
If you are using plywood for roofing the standard is 5/8 inch thick.
2016-03-16 23:12:44 · answer #9 · answered by Anonymous · 0⤊ 0⤋
7/16" is standard. I never use OSB for roof sheeting because of its' poor properties when exposed to moisture. I would suggest 1/2" plywood.
2007-03-19 12:50:38 · answer #10 · answered by Mustbcrazy 3 · 0⤊ 1⤋