Installing Metal Roofing Over Zip Sheathing

Taped zip panels qualify as roof underlayment in most cases.

Installing metal roofing over zip sheathing.

5install metal panels or shingles. Work toward the ridge. Do not wear footwear with worn soles or heels. Installing zip system sheathing in a roof application.

Metal panels over zip system sheathing. 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. Install the first metal panel on the low end of the roof square to the eave. Install the roofing screws vertically along each rib in the panel.

Secure the metal panel to the deck by drilling 1 1 2 inch galvanized metal screws through the peak of the rib in 12 inch to 16 inch intervals. The roof has continuous ventilation under the metal from eave to ridge. Do need to rack the house with sheathing on walls or cross bracing. To create overhangs on this house the architects designed a very cool over roof with 2 bys.

Overlap the edge of the roof by 1 inch. Add purlins on top of this for venting and drainage then add horizontal purlins to mount the metal roof to. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Always begin working at the point with the longest peak to eave distance.

Add the metal panels. Tate hudson a product application specialist with huber engineered woods replies. Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm. Ensure the roofing surface is free from oil chemicals sawdust dirt tools electric cords air hoses clothing and anything else that might create a tripping hazard.

This poster is a portuguese translated overview of typical zip system sheathing details for roof applications and is formatted to be used as a printable jobsite poster. More about wall and roof sheathing. When installing new shingles or roofing over existing zip system sheathing you first need to install an additional code approved roofing underlayment due to the amount of nail holes left behind from the previous roof covering. Install temporary toe boards along the zip system sheathing roof surface.

This means that you don t need to install tar paper or synthetic underlayment over the roof sheathing before installing the roofing. Begin on the left side of the roof working to the right. Take care the first piece is aligned precisely perpendicular square to the edge. The peel and stick underlayment overlaps the zip wall panels by about 3 to 4 inches.