New Plywood On Roof

It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements.

New plywood on roof.

Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. 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. 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.

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. New roof plywood replacing damaged wood. 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. The new plywood will have to be nailed to the rafters or roof trusses.

This is really just a rough draft of the post a collection of photos with captions. 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. Find roofs plywood at lowe s today. It will support roof loads for most situations and is the standard for most roof applications.

Now it s time to replace the roof plywood and any other damaged wood in the roof area. If the old plywood had been removed. What kind of plywood for the roof. But with the old plywood left in place it will be considerably more difficult to locate the rafters to ensure proper nail.

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. The tear off gets a lot more complicated if you have something other than asphalt up there. Even though it isn t visible it is very important to the structure of your home. That must always be accounted for in the roofing design process.