Flat Roof Sheathing Installation

Nail the plywood around the top outside and bottom edges every 6 inches.

Flat roof sheathing installation.

Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. Install osb textured side up. 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. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.

Avoid putting osb on wet roof trusses. 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. 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. How to correctly install plywood or osb roof sheathing.

Curved or uneven roof trusses will cause osb roof sheathing to warp or buckle under roof coverings. 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. Of course you don t need to live in a modern house to deal with a flat roof. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Avoid installing osb with the textured side down. The textured surface helps flashing and waterproof underlay stay in place effectively. 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.