3 8 Plywood Over Existing Roof Battens
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So now they install 3 8 plywood over the top of whatever crap is in place so that the owner sees a new roof and they can stick the i w along the eaves and valleys and have it work.
3 8 plywood over existing roof battens. Over time shiplap fir wood resin dissipates causing the boards. After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood. The deck is not rotting out except for a few spots along the drip edge which we are cutting out to replace. Roofing put plywood over existing 3 8 plywood.
Why re sheet over shiplap. I am planning to have a new roof installed and currently have 3 8 plywood supported by trusses 24 apart. The roof deck turned out to be 3 8 plywood which is starting to break down due to the number of times the roof has been replaced. By my reading of the code the plywood counts as an additional layer so this approach blows the 2 layer maximum rule out the window.
My neighbor had an additional 3 8 layer of plywood added. Plywood sheathing delivers outstanding rigidity strength and versatility and is an excellent choice for. Its really common here too to see 3 8 plywood used on roofs from the 70 s. I have had two roofers tell me that if we use osb we must use battens one said that if we install plywood on the roof even 1 2 we can skip the battens.
We resheet with 1 2 osb right over top of the old all the time be it 3 8 ply or old t g boards in the case of the old t g boards it makes for a flatter surface plus greatly lessons the chance of nailing into the gap between boards. Can be nailed directly to framing wall studs and roof or floor joists. However installing new flashings including special drip edge flashings made for reroofing will ensure a tight seal and a long life. He has also told us that with battens the roof will have dents if walked on unless they stay on the battens.
This product is strong durable and when finished properly performs for the life of your project. The roof pitch on the house garage is 8 12 and the porch is 3 12. Don t judge this product by its cover. Plywood sheathing is ideal for residential and light plywood sheathing is ideal for residential and light construction and every piece meets the highest grading standards for strength and appearance.
This was the worst of the damage i found damage where someone stepped on the joint but i ve seen 1 2 plywood break the same way where there were voids in the laminations at the edge of the sheet. This provides added protection against ice dams. Plywood sheathing may not look pretty but it sure is useful. Today a shiplap roof is usually 60 years old.
The main issues are that you can hear the plywood cracking and feel it give under you as you walk around. It adds proven performance and durability to new homes room additions and renovations. About 3 or 4 12 24 oc roof has probably seen 40 of snow at some point and 80 mph winds.