Plywood Over Tongue And Groove Roof

As roofing contractors in seattle we are often asked why do we need plywood over our old solid sheathing.

Plywood over tongue and groove roof.

Say what you want about them but osb and plywood do not offer a very attractive finished look. Whenever your roof was first installed the nails were put into the solid wood. Do you really need new plywood over tongue and groove. If the old plywood was clean and not infested with dry rot or mold it should be ok to cover it with the new plywood.

Some use clips as convenient spacers. Tongue and groove boards were used for decades prior to the widespread adoption of plywood as a sheathing material in the 1950s and 1960s. Rafters it shouldn t be an issue. It doesnt look wavy and 2 other guys said they just would put over t and g.

For 5 8 or thicker roof sheathing on 16 o c. Old houses with asphalt shingles usually had either tongue and groove boards or straight sided boards abutting. However that isn t the case. Remember the keyword is solid.

The keyword here is solid it used to be standard to use shiplap 1 boards tongue groove or other boards for the roof deck. One thing to consider is that the new plywood probably wants to be the same thickness as what would be used if it was used by itself on the rafters i e. The new plywood thickness should be. These 8 to 12 inch wide boards were nailed together tight.

One was for a fortune to put new plywood over my existing t and g. The main reason to use tongue and groove boards these days is appearance from beneath the roof. Find all the facts and ideas about it in this article before you install one for your home design. These wider boards were all nailed tightly together.

If the old plywood had been removed. In my experience the need for tongue and groove or edge clips is determined by the thickness of the roof sheathing and the spacing of the rafters. Among other things this video covers how we re doing the insulation in a way that leaves the framing and. In the 1950s plywood sheathing and particleboard became common and today most standard construction roofs use either half inch plywood or particleboard s big brother oriented strand board osb.

Tongue and groove roof decking especially the one from solid wood boards is one of the two most common choices for residential use right now. They said they have to or the roof will be wavy.