Osb 2 Or 3 For Shed Roof

Direction of text should run in direction of span.

Osb 2 or 3 for shed roof.

I m thinking about putting another layer of osb on top of the insulation before i finally lay a single sheet epdm on top. The topic replacement shed roof osb or ply is closed to new replies. Thicknesses range from 5 16 to 3 4 inch and the proper. 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.

The roof has no waviness sag in it. The thickness of osb that you need varies on where it is used in a building. Most osb suppliers have a load span table giving a guide to the spacing of timbers for different thicknesses. Singletrack issue 132 is out now.

Saturday 12th january 2013. Apple podcasts google podcasts android by email rss. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb. I ve just about finished my double skin brick shed and i m about to do the roof.

My shed is osb with a layer of torch on roof felt been good for 10 years. For shed construction there are two commonly used grades of osb. My solution when i built our garage was trusses on 19 3 center the canadian std and 5 8 osb. Typical markings on osb panel.

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. Also make sure that you get your supporting timbers at the correct spacing. 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. The two grades of board look very similar and can only be distinguished visually by markings which are sprayed on to the board.

Full membrane will just speed up the rot. 2 is ok but 3 better you don t say what thickness the floor needs to have air circualtion. Juat lay dpc where there is ground contact. Osb comes in 4 by 8 foot sheets as does plywood but the manufacturing process allows the production of longer and wider ones.