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Old 07-19-2012, 07:04 AM   #16
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Vinyl Siding Over PT Plywood

Originally Posted by Joe Carola View Post
Why did you use pt?
This has been one of those projects with lots of changes along the way (as my wife thinks of something different). Since it's essentially open to the weather (very wet very often down here) everything in the structure below top plate is PT (YellaWood). I sheathed the lower 3.5' of the 9' stud walls with the plywood; upper portion will be covered with screen. The original plan was to just paint the plywood walls, then wife decided we should cover it with vinyl siding "to reduce the amount of painting she will have to do."

I pointed out the trivial amount of painting avoided vs the cost of siding -- to no avail.

Here's a pic I took this morning... Getting anxious to finish this thing!


Last edited by PPBART; 07-19-2012 at 09:03 AM. Reason: add photo
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Old 07-21-2012, 01:43 AM   #17
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Vinyl Siding Over PT Plywood

Treat it as a house.... WRB (water resistive barrier) required. Vinyl will leak water, without a WRB- the wetting/drying cycles will out-gas the p.t. chemicals more/faster. A felt paper will hold/store the water next to the ply, drying inward, wetting the wood framing for mold/rot. Rosin paper (leaks/stains red dye when wet) is not recommended personally, use a plastic housewrap like Tyvek (58 perms) to keep the wood dryer.



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