Vapor Barrier?

[J Persons]

I'm renovating a building with new interior paneling and floors, and after removing the existing interior paneling discovered that there is no vapor barrier inside the walls. Is there a paint on type of material that can be used as a vapor barrier inside the walls? I want to insulate the walls but need something to stop the moisture from soaking through to the insulation and into the new paneling that I'm putting up. Thanks in advance.

 

[unklgriz]

There is a product called Dry-Loc that is a paint. From past experience in the construction field You want the walls to breathe. So you have 2 options, use faced insulation without vapor barrier (plastic) between the paneling and the insulation, or use unfaced insulation with plastic vapor barrier. Your paneling shouldn't get wet. Make sure you have plenty of air movement in your attic also. Gable end vents are really the best.

 

[readhead]

For the OP's climate the vapor barrier needs to be outside the insulation. We can tell he knows that by the way the question was phrased. If the budget allows this is what closed cell spray foam is perfect for.

 

[audioworks04]

From the sounds of it, no wrap was used and I agree that it should have one, but typically metal buildings do not use any. Closed cell spray insulation would be ideal, but as mentioned above you want the building to breath.


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[readhead]

I presumed it was a house but the OP didn't really say.