Will soon be installing brick veneer. Blackboard is 40 years old and provides no strength for the framing. I’d like to add a layer of 7/16 OSB directly over the top of it. OSB would then be wrapped prior to installing new windows and doors.
Any problems with this idea?
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Replies
No problems that I can think of.
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Is there a way for the water and water vapor which will get in (remember, brick and mortar are porous) to get out "quickly" enough?
OSB is "mold candy"
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- Psalms 109:30-31
I Would Use Advatech instead of osb as it is more water resistent.Than it Would be less ap to mold
Edited 2/26/2007 5:58 pm ET by mgard38
Bob, is there any documentation that supports this claim?
I would think that OSB would be more mold resistant than CDX or other typical plywoods.
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Problems? OSB over the beaverboard will make things stronger, but not as strong as if you remove the old stuff and OSB right on the framing. Use long enough nails and you should be fine. If I suspected any water intrusion in the last 40 years I'd want to tear off the old sheathing and have a look before covering it back up.
Bill
Certainly it would be stronger with direct contact to the studs but that difference would likely be negligible.<!----><!----><!---->
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You would, however, lose an insulating component of the wall in removing the fiber board.<!----><!---->
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I don’t think that the removal of the existing fiber board would be warranted under normal circumstances.
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