Osb 2 Or 3 For Shed Roof

Most osb suppliers have a load span table giving a guide to the spacing of timbers for different thicknesses.

Osb 2 or 3 for shed roof. Direction of text should run in direction of span. 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. The topic replacement shed roof osb or ply is closed to new replies.

My shed is osb with a layer of torch on roof felt been good for 10 years. Singletrack issue 132 is out now. Apple podcasts google podcasts android by email rss. Saturday 12th january 2013.

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 two grades of board look very similar and can only be distinguished visually by markings which are sprayed on to the board. Thicknesses range from 5 16 to 3 4 inch and the proper. Typical types of wood used for roof sheathing are oriented strand board known as osb and plywood the most popular being osb.

Up here in bonny scotland i ve seen many a roof with osb. 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. 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.

Also make sure that you get your supporting timbers at the correct spacing. 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. The roof has no waviness sag in it.

My solution when i built our garage was trusses on 19 3 center the canadian std and 5 8 osb. 2 is ok but 3 better you don t say what thickness the floor needs to have air circualtion. Full membrane will just speed up the rot. Typical markings on osb panel.