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Finishing a Basement
I am finishing a basement that has poured concrete walls, and also has sheetrocked wood frame walls on the side that is above ground.
Some of the basement walls are a combination, half way up concrete the rest frame, insulation and sheetrock. On these walls I have to frame another wall in front to elininate the ledge.
Question where I have to build a "straightening" wall can I have frame, insulation, sheetrock, insulation,frame , sheetrock.
Or do I have to remove the redundant sheetrock?
Do I need another vapor barrier?
Do I need to gut the sheetrock and existing insulation out then do the "straighten frameing", then insulate and sheetrock???
Thanks for any guidance
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Finishing a Basement
whichever way suits your fancy, since they will all be o.k.
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Finishing a Basement
You should put a good vapor barrier in on your new framing behind the new sheetrock. Make sure that your seal is good or the trapped moisture will condensate riuning your insulation and rotting your wood. If there is a vapor barrier in the existing framing I would remove it as any moisture leak from the inside would be trapped between the two vapor barriers. The wall would not be able to breath to the exterior the way it should. Trapped moisture also can start mold. This is a health hazard.
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You might consider not "straightening the walls". I had a previous house that had short lower 2x4 wall with drywall that came up to the level of the cement. Then it had a 5-6" shelf on top. The top portion was the existing 2x4 (or 2x6) wall sitting on the concrete wall. The shelf makes a nice place to sit pictures, nick nacks, plants etc. The shelf could be either wood or drywall. If you do it your way, the window casings will also have to be extended for the new "thick" wall. Just an idea.
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It's a good idea to have some ventilation for any wood that's between a foundation wall and a vapour barrier. It depends on the soil, but ground moisture can come through a foundation and become trapped in a wall space. I think it's better to remove any dry wall in such places.
I remember being in a 5' crawl space beneath a small modular house on a block foundation. The builder had put vapour barrier across the entire floor with a bit of sand on top. The barrier also ran it up the block walls and over wood. There was quite a bit of white rot on some of the wood.
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