New Plywood On Roof

Even though it isn t visible it is very important to the structure of your home.

New plywood on roof.

Most construction sites will consider the use of either osb or plywood for the roof. Sometimes referred to as roof sheathing or a roof deck this plywood acts as a foundation for the layers of underlay and the shingles on your roof and connects the roof to the frame of the house. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements. This will ensure that the strength of the plywood is enough to bridge spots on the roof where the old plywood was weakened to the point that it would sag under the load on the roof.

Now it s time to replace the roof plywood and any other damaged wood in the roof area. I ll be on the road for a few months and won t have time to. The new plywood will have to be nailed to the rafters or roof trusses. Find roofs plywood at lowe s today.

But with the old plywood left in place it will be considerably more difficult to locate the rafters to ensure proper nail. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. 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 tear off gets a lot more complicated if you have something other than asphalt up there.

Rv roof repair step 8. That must always be accounted for in the roofing design process. If the old plywood had been removed. Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements.

When it comes to choosing what kind of plywood you need for the roof it is important to understand the basic categories that you can choose from. It will support roof loads for most situations and is the standard for most roof applications. If you can see original wood shingles on the underside of your roof when you re up in the attic you ll need not only to tear everything off but also to install new plywood decking all of which likely adds 5 000 or more to your costs. Going over inadequate thickness plywood for a more solid deck or skip sheathing is fine as long as they pay special note to the ventilation and home the roof is designed to vent.