Condensation behind dense-pack cellulose at the roof?
We have a project in which we dense-packed the 2x10 rafter bays (walk-up attic) with cellulose, behind which we used vent baffles for ventilation and over the surface we used netting.
The homeowner then placed 6mil poly over the entire surface and used temporary space heaters to keep it warm. We are now seeing a build-up of condensation at the underside of the plywood roof sheathing in some areas--but not all--which was sufficient to wet/stain the dense-pack cellulose. I'm wondering if anyone else has experienced a similar condition and/or if there is simple fix?
Posted Sat, 01/04/2014 - 07:56
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