Once all the new insulation and rafters are secured, the entire roof is covered with new plywood. In some cases I recommend 3/8-inch plywood, though 1/4-inch will usually suffice.
How thick is the roof of an RV?
Normally, your RV roof will be two inches thick, with your ceiling consisting of two ¼ inch plywood sheets and 1½ inches of rigid Styrofoam in between the plywood.
Can I walk on my RV roof?
The roof becomes weaker as you move from the outside walls toward the middle of the roof. So the safest place to walk on an RV roof is as close as you can to the sides as you can without falling over the edge.
When should I recoat my RV roof?
When dealing with a liquid roof, repairs are generally minimal because the material is designed to be durable, flexible, and hold up to all kinds of extremes and elements. This cost-effective roofing option generally needs a recoat before it needs repair, simply due to wearing down with age.
Should I use OSB or plywood for roof?
OSB takes longer than plywood to get saturated, but also takes much longer to dry out. When used as roof sheathing, this tendency to hold moisture means it will degrade faster than plywood when exposed to chronic leaks.
Is OSB stronger than plywood?
Wood fiber is used more efficiently in osb. Osb is stronger than plywood in shear. Shear values, through its thickness, are about 2 times greater than plywood. This is one of the reasons osb is used for webs of wooden I-joists.
Can you put plywood over plywood on roof?
The new plywood will have to be nailed to the rafters or roof trusses. … But, with the old plywood left in place, it will be considerably more difficult to locate the rafters to ensure proper nail placement.