Installing Metal Roofing On Osb

Provide a 1 8 inch gap.

Installing metal roofing on osb.

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. It does create some additional work just at the edges to close between the purlins but that s much less than cutting cross. That s common for metal roofing. 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.

For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. 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. The minimum osb panel size is 24 inches in any direction and each sheet end must rest on a rafter.

April 3 2017 filed under. Lay sheets in rows with the long edge horizontal to the roof bottom. Then cover the entire roof with a layer of insulation and secure it with a staple gun. Next use 1 inch nails to secure some metal edging to the perimeter of the roof.

Moreover try to ensure that the screws are all aligned evenly. Install osb panels on aligned roof trusses ensure roof trusses are in proper alignment with no curves or uneven sections when installing osb to sheathe roofs. Install osb textured side up. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.

Try to space the screws about 12 inches apart down the entire piece of metal. You will use metal roofing screws to secure the metal panels to the sheathing. And for any exposed fasteners try to avoid over tightening them. Metal roofing screws need to go into framing.

Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.