Osb 2 Or 3 For Shed Roof

Thicknesses range from 5 16 to 3 4 inch and the proper.

Osb 2 or 3 for shed roof.

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. 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. 2 is ok but 3 better you don t say what thickness the floor needs to have air circualtion.

My solution when i built our garage was trusses on 19 3 center the canadian std and 5 8 osb. The thickness of osb that you need varies on where it is used in a building. The topic replacement shed roof osb or ply is closed to new replies. Direction of text should run in direction of span.

Typical markings on osb panel. Typically 3 4 18mm for floors and 3 8 9mm for walls and 1 2 11mm roof. I ve just about finished my double skin brick shed and i m about to do the roof. The roof has no waviness sag in it.

Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones. The two grades of board look very similar and can only be distinguished visually by markings which are sprayed on to the board. Sheets of 7 16 inch thick with no edge support can be used in an area where the snow load is 30 pounds per square foot. 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.

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. Singletrack issue 132 is out now. With edge support and the same snow load 3 8 inch osb can be used.

Juat lay dpc where there is ground contact. Saturday 12th january 2013. Full membrane will just speed up the rot. Also make sure that you get your supporting timbers at the correct spacing.