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-   -   plastic over insulation? (

ALPS 08-25-2007 11:00 AM

plastic over insulation?
Any benefit to putting up plastic over the insulation before hanging dry wall? Aside from time and minimal cost, any drawbacks?

The insulation does have a moisture barrier, but someone told be that covering it with plastic is a good idea, especially in a high moisture area, like a bathroom.
This wiil be in a closet that has one exterior wall and three interior, with one (the longest) separating the closet from a future bathroom.

inspectorD 08-25-2007 03:40 PM

No benefites
Plastic is a bad vapor barrier..period. I would stick with the paper faced insulation and be done.
If you were to install plastic over the paper you would have 2 vapor barriers..can you see it raining in your home? This is a no-no in the vapor police book.:D

Paper lets the moisture collect a bit then releases it..plastic just runs down the wall. I have been in homes where the plywood at the exterior wall floor area was rotting through. These where extreme condition but better to er on the side of caution.:eek:

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