tar paper on basement walls


Old 02-05-04, 08:40 AM
unique3's Avatar
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Location: Winnipeg, MB Canada
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tar paper on basement walls

I am redoing my basement walls and when I took out the old insulation it was moldy. Anyways I have read that the insulation should not touch bare concrete due to moisture coming through the concrete from the outside. Also I have read serveral times not to put vapour barrier between the insulation and the concrete and then again between the insulation and the drywall because it creates the double VB effect and caused more harm then good.

My dad said the best way to do it is to use tar paper against the concrete and then poly VB between the insulation and drywall again. This I guess will prevent any moisture from the concrete from getting obsorbed into the insulation.
Is this a good way to do it or am I still asking for problems.
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Old 02-05-04, 01:33 PM
Ed Imeduc's Avatar
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Location: Mountain Williams Missouri
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The 15 lb black felt was the best V/B we had years back but it did let some moisture in. So forget it. Just hang a good poly on the wall then put the wall and insulation in paper side to the room. ED
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