Osb Over Old Roof

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.

Osb over old roof.

Fortunately this is one issue that has primarily been standardized by the industry. Anyone aware of code or other issues inherent in this approach. Open spaces form between the once tightly fitted shiplap boards. I m halfway though sheeting the roof of my shipping container shop and already need to redo some of it.

The existing asphalt. After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood. 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.

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. Because of its construction some manufacturers actually make larger sheets of osb. However you might find that osb can better suit your needs than plywood for the roof. The roofing crew uses a red ripper roofing demolition tool to pry up cap shingles which are collected in a plastic bin along with old boot flanges and any loose shingle tabs.

Roy gingrich of ellicott city has a 40 year old house with an asphalt shingle roof surface. Can oriented strand board osb be used for roofing. We are located a bit south of saint louis roof pitch is 5 in 12 if that makes a. 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. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. 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. Both cdx plywood and osb tend to come in standard sheets of four foot by eight foot 4 8.

Can new plywood be installed on a 40 year old roof without removing the old.