Installing Metal Roofing On Osb

And for any exposed fasteners try to avoid over tightening them.

Installing metal roofing on osb.

Provide a 1 8 inch gap. Lay sheets in rows with the long edge horizontal to the roof bottom. Metal roofing is also available in the form of shingles. Then cover the entire roof with a layer of insulation and secure it with a staple gun.

Try to space the screws about 12 inches apart down the entire piece of metal. 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. Metal roofing screws need to go into framing. The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter.

Metal roofing panels rated for architectural use attached to purlins horizontal pieces of wood or metal fastened to roofing trusses are structurally sound when installed according to your roofing manufacturer s instructions and local building codes. April 3 2017 filed under. It does create some additional work just at the edges to close between the purlins but that s much less than cutting cross. I guess at 14x16 you won t be towing this one but the wind still blows and osb does not have adequate holding power to resist the wind trying to rip the metal roof sheeting off.

A potentially easier option is to use purlins on top of the rafters rather than framing between the rafters. Curved or uneven roof trusses will cause osb roof sheathing to warp or buckle under roof coverings. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.

For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. Before you install metal roofing repair any damage to the wood under the shingles. That s common for metal roofing. Next use 1 inch nails to secure some metal edging to the perimeter of the roof.

You will use metal roofing screws to secure the metal panels to the sheathing.