Metal Roofing Over 7 16 Osb

Isherwood mar 12 at 3 18.

Metal roofing over 7 16 osb.

Insulation for roof tile shake or metal panel roofing systems manufacturer rmax inc. In order to avoid a hump at the transition from two layers of materials to one the notation on the building plans advises to lower the roof purlins in these areas by 7 16. If you don t use purlins as others suggested i would use 3 4 plywood for roof sheathing. Lee osb is commonly sold in both 7 16 and 1 2 thicknesses.

Then the top of all your purlins once osb under metal roof panels is placed will be in the same plane and the roof steel will lay flat. It is true as the price of every osb board is around 15 20 per sheet 4 8 sizes. Is osb acceptable as roof decking for metal roofing. April 3 2017 filed under.

1 1 2 ssr metal roofing material metal siding steel typically a minimum 5 8 plywood or 2 4 purlins furring is used as support for the 1 1 2 ssr metal roof system 7 16 osb or wafer board decking is not recommended due to poor screw attachment values. There is the sticker shock at the lumber yard but for a reasonable sized home it only adds a few hundred dollars. Metal roofing roofing answers roofing installation roofing materials oriented strand board commonly referred to as osb is a type of engineered lumber similar to particle board formed by adding adhesives and then compressing layers of wood strands. For plywood it is like 5 to 10 more expensive.

Half inch is noticeably thicker. I mention it because you seem to imply that 7 16 is nominally half inch but it s a separate size more commonly used for walls and it s odd that they re not both listed in that chart. Overall in installing a whole roofing area osb will cost you 700 to 1 000 cheaper than plywood. I wouldn t trust panels screwed to measly 7 16 osb in a high wind area.

The reason why osb is cheaper is basically because the board is engineered. Why osb is cheaper. Mike the pole barn guru. Dallas texas 75244 800 527 0890 central to a 7 16 inch thick osb nailing panel on the top surface and a glass fiber organic mat facer on the other side of the product.

I d recommend the 1 2 for any roof.