Osb 2 Or 3 For Shed Roof

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Osb 2 or 3 for shed roof.

The topic replacement shed roof osb or ply is closed to new replies. Typically 3 4 18mm for floors and 3 8 9mm for walls and 1 2 11mm roof. For shed construction there are two commonly used grades of osb. Most osb suppliers have a load span table giving a guide to the spacing of timbers for different thicknesses.

Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. Singletrack issue 132 is out now. My solution when i built our garage was trusses on 19 3 center the canadian std and 5 8 osb. Around here southern mn the cities you can drive through the neighborhoods with cheaper houses the ones with trusses on 24 centers and 1 2 or 7 16 sheeting and most many will have sagged roofs.

I ve just about finished my double skin brick shed and i m about to do the roof. 2 is ok but 3 better you don t say what thickness the floor needs to have air circualtion. The two grades of board look very similar and can only be distinguished visually by markings which are sprayed on to the board. The roof has no waviness sag in it.

Also make sure that you get your supporting timbers at the correct spacing. The thickness of osb that you need varies on where it is used in a building. With edge support and the same snow load 3 8 inch osb can be used. Full membrane will just speed up the rot.

Up here in bonny scotland i ve seen many a roof with osb. My plan is for a warm roof so i m going to lay the 18mm osb3 then a vapour barrier followed by 100mm celotex insulation boards. Saturday 12th january 2013. Thicknesses range from 5 16 to 3 4 inch and the proper.

I m thinking about putting another layer of osb on top of the insulation before i finally lay a single sheet epdm on top. Apple podcasts google podcasts android by email rss. Juat lay dpc where there is ground contact. My shed is osb with a layer of torch on roof felt been good for 10 years.