Priming back of purple board

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Old 04-30-19, 09:41 AM
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Priming back of purple board

I'm planning to replace 8 sheets of paneling in the basement of a rural summer home with 1/2" purple board due to higher humid conditions. The back side of these 2 walls face an "L" shaped laundry/storage area currently has exposed studs. Need to keep it that way since there's a lot of shelving, cabinets, etc.

Main question is should the backside of the drywall be primed before it goes up? Someone suggested to leave the backside un-primed so it can "breathe".

Thanks in advance for your input.

Steverino
 
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Old 04-30-19, 10:11 AM
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In a bathroom it might want to breathe (though I've never heard of it before) because you have a high moisture environment on one side and a relatively dry on the other side. In your basement the humidity should be about the same on both sides of the wall so I don't think painting the back would cause trouble.
 
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Old 04-30-19, 04:37 PM
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As long as the backside stays dry there is no reason to prime the back. If the foundation walls don't stay dry - the cause needs to be identified and fixed first!
 
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Old 04-30-19, 04:42 PM
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Who paints the back side of drywall??? If it's mold resistant that's all you need. Paint is for looks.
 
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Old 05-01-19, 05:50 AM
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I think the back side of the sheetrock is exposed in a laundry/storage room. I assume they want to brighten and neaten the look a bit by painting.
 
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Old 05-01-19, 05:57 AM
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If that is the case, there is nothing wrong with painting the backside - I'd paint the studs also.
 
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Old 05-10-19, 10:00 AM
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Had a lot of trouble logging in recently or else I would have said "Thanks" for all the replies/input earlier.

Aside from a local friend who mentioned this "breathing thing" I've never heard of it either. There is an excess humidity problem which is being addressed A small dehumidifier just never cut it.

For now the conclusion is not to waste primer on the backside.

Thanks again.

Steverino
 
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