Osb Over Old Roof

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Osb over old roof.

We are thinking of nailing 7 16 osb over the existing plywood and making sure the the joints between the layers do not line up. I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it. Open spaces form between the once tightly fitted shiplap boards. However you might find that osb can better suit your needs than plywood for the roof.

Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle. I have not been able to locate anything that addresses this point. The existing asphalt. We are located a bit south of saint louis roof pitch is 5 in 12 if that makes a.

Oriented strand board isn t plywood nor is it a type of particleboard fiberboard or wafer board and although it is a newcomer to a plywood. Anyone aware of code or other issues inherent in this approach. Can new plywood be installed on a 40 year old roof without removing the old. After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood.

I m going a reroof in two weeks time where we are removing all the old roof covering and the old sheathing delaminated and rotted 3 8 plywood and replacing it with new 5 8 t g plywood. Can oriented strand board osb be used for roofing. Roy gingrich of ellicott city has a 40 year old house with an asphalt shingle roof surface. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.

Sometimes they use a standard gardener s potato fork but the best tool for the job is a red ripper integrated roofing technologies 2413 stevenage dr unit 11. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Today a shiplap roof is usually 60 years old. Because of its construction some manufacturers actually make larger sheets of osb.

Both cdx plywood and osb tend to come in standard sheets of four foot by eight foot 4 8.