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Old 04-29-2013, 02:40 PM   #1
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Do i need gap between wall and underlayment?


I normally leave a small gap between the wall and plywood underlayment assuming it would expand and contract. My worker forgot to do that in one of the rooms. Will this be a problem. I assume it won't be a problem since it's being nailed down. But I don't know for sure. Here's a picture:
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Old 04-29-2013, 02:57 PM   #2
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Do i need gap between wall and underlayment?


If this is in a conditioned space I would not worry about it at all. It is a real concern on a roof where a delta T of 100 degrees is not unusual, but indoors I would not even worry about it. Why isnt the wall on top of the underlayment, remodel?

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Old 04-29-2013, 03:39 PM   #3
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Do i need gap between wall and underlayment?


Quote:
Originally Posted by jagans
If this is in a conditioned space I would not worry about it at all. It is a real concern on a roof where a delta T of 100 degrees is not unusual, but indoors I would not even worry about it. Why isnt the wall on top of the underlayment, remodel?
Yes. It is a Remodel. This is an 3/8 underlayment on top of a 1/2 floor sheathing (I think that's the correct term)
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