Construction question
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Elder User
Joined: Nov 2001
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From: S.W. Oregon
Construction question
Since another post seemed to generate a lot of knowledgeable answers, I'll ask one I have wondered about for a while.
Around here, Oregon, you see lots of people building homes in the rainy season. Often the sub floor is down and exposed to weeks of rain as the framing is done. Then later sheathing is often exposed to the weather for weeks and weeks before it is covered with wrap and siding.
I have also seen roof sheathing get rained on and then covered the next day with tar paper and shingles.
Isn't this bad for the plywood etc., especially if it is not completely dried out before covering? Or is the material made to withstand this?
Around here, Oregon, you see lots of people building homes in the rainy season. Often the sub floor is down and exposed to weeks of rain as the framing is done. Then later sheathing is often exposed to the weather for weeks and weeks before it is covered with wrap and siding.
I have also seen roof sheathing get rained on and then covered the next day with tar paper and shingles.
Isn't this bad for the plywood etc., especially if it is not completely dried out before covering? Or is the material made to withstand this?
Posting Guru
Joined: Jun 2003
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From: West Texas
yeah...I think your right...I've seen the same thing. If the wood is still wet and covered that way, it CAN'T be good. But in most cases it comes down to the almight dollar. the construction company is trying to put up as many as they can as fast as they can and aren't going to go thru any extra steps. I don't think most of them care as long as they pass inspection and get their money.
Post Fiend
Joined: Jun 2003
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From: NE Texas
Originally posted by sinjin
It aint good but it will dry out over time from the warm dry air inside the finished home.
It aint good but it will dry out over time from the warm dry air inside the finished home.
Posting Guru
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From: Conyers
Originally posted by Big Orn
True and decking comes with external glue, so if it does get wet it will not affect the integrity of the whole sheet. I have seen them "swell" and then go back to normal size -after- the roofing is installed. Remember, the decking is exposed underneath where air can get to it. It's those pieces that get trapped that mold and deteriorate fast.
True and decking comes with external glue, so if it does get wet it will not affect the integrity of the whole sheet. I have seen them "swell" and then go back to normal size -after- the roofing is installed. Remember, the decking is exposed underneath where air can get to it. It's those pieces that get trapped that mold and deteriorate fast.
Posting Guru
Joined: Jul 2003
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From: Lenexa, KS
In my opinion, the water doesn't do plywood or OSB any good. Ideally, the roof decking should be covered before it gets wet. The same for the OSB siding and especially any plywood floor decking. None of that material is rated for exterior exposure. Like someone else said, when it gets wet, it swells and I don't see how that doesn't compromise the strength of the board because as it "grows", somethings gotta give. What's giving is the glue / wood bond. None of these products have the characteristics of "real" wood, they're only used because of cost and convenience. Anyway, just my 2 cents!!
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