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I’ve been told by one contractor that he never uses plastic sheeting on unfaced insulation batts but uses PVA (poly-vinyl acetate) applied with a roller over the sheetrock to create a vapor barrier. Is this sufficient? he said the code here (Wa. state) allows it.
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I've been told by one contractor that he never uses plastic sheeting on unfaced insulation batts but uses PVA (poly-vinyl acetate) applied with a roller over the sheetrock to create a vapor barrier. Is this sufficient? he said the code here (Wa. state) allows it.