Flat Roof Sheathing Installation

Curved or uneven roof trusses will cause osb roof sheathing to warp or buckle under roof coverings.

Flat roof sheathing installation. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. The textured surface helps flashing and waterproof underlay stay in place effectively. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line. Avoid installing osb with the textured side down.

You mentioned in another article on gba that venting the top side of sheathing with a cold roof steel roof fastened on battens allowing air flow directly underneath the roofing but on top of the sheathing while at the same time venting underneath the sheathing is incompatible. Snap a chalk line down the line of the rafters on the piece of plywood so you can find the rafters with your nail gun. Install osb textured side up. Zip system roof sheathing zip system wall sheathing advantech subfloor adhesive zip system r sheathing installation manuals bim library view all results where to buy rebates contact us blog events other products huberwood my huberwood.

So even though flat roofs are ideal for drier landscapes in climates with heavy precipitation a properly installed flat roof can be a fine choice for a homeowner especially thanks to ever improving waterproof materials and installation techniques. Align the long edge of the sheathing with the ends of the. Of course you don t need to live in a modern house to deal with a flat roof. 5 steps to proper roof sheathing installation plywood and osb are ideal materials for roof sheathing systems and following these simple construction steps will ensure optimal performance november 17 2014.

Position the first piece of plywood or oriented strand board sheathing on the bottom edge of the rafter tails at one end of the roof. How to correctly install plywood or osb roof sheathing. Nail the plywood around the top outside and bottom edges every 6 inches.