How To Apply A Metal Roof Over Osb

Overlap the edge of the roof by 1 inch.

How to apply a metal roof over osb. Whether you are looking to install a metal roof on a shed or a house it s important to know the difference in the various types of metal roofs available. 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. Osb is widely used as roof decking material. Case in point one of our recent clients in colorado has hired a building contractor to erect his building.

Start at the highest point and the furthest point from the trash container and take off all the old. Work at a comfortable steady pace trying not to rip up or carry off too much old roofing at once. Although you can install corrugated metal roofing over shingles for the best foundation it is recommended that all the old roofing be removed. Work toward the ridge.

This is by far the most common way to install a metal roof. The good news is that there are many different solutions in terms of installing metal roofing panels including tin aluminum and steel. Let s take a look at the most common types of metal roofs for houses. 3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof.

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. This particular contractor happens to admit to sheathing over 90 percent of all of the post frame buildings he has put up in 7 16 osb oriented strand board beneath the steel roofing and siding. In the case above the shear forces in the last 12 foot bay at each end of the roof have had osb placed between the roof purlins and the steel roofing. In many cases it makes sense to remove an old or dilapidated roof and install a metal roof that is better able to withstand the elements.

Install the first metal panel on the low end of the roof square to the eave. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. In order to avoid a hump at the transition from two layers of materials to one the notation on the building plans advises to lower the roof purlins in these areas by 7 16.