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6 mil plastic as underbelly wrap?
Posted: Sat Apr 23, 2011 7:26 am
by creekside
Can I use 6 mil plastic to hold up the 6" insulation between the floor joists of our crawl space addition?
Re: 6 mil plastic as underbelly wrap?
Posted: Sat Apr 23, 2011 8:24 am
by Greg
It's not recommended, You want a product that is breathable. You do not want any moisture trapped, that would cause a Mold or rot issue. At the very least I would use house wrap (Tyvec).
Plastic would be fine on the ground under the home to form a vapor/moisture barrier.
Greg
Re: 6 mil plastic as underbelly wrap?
Posted: Sat Apr 23, 2011 5:49 pm
by creekside
i put the 6 ml on the ground as a barrier, then i used a proper underbelly wrap, then insulation. Can i now put another 6ml or less on top of the insulation before laying the plywood floor which would hold my rug?
Re: 6 mil plastic as underbelly wrap?
Posted: Sat Apr 23, 2011 8:59 pm
by Greg
I guess you could, It's almost overkill.
Greg
Re: 6 mil plastic as underbelly wrap?
Posted: Sun Apr 24, 2011 7:56 am
by creekside
is it overkill in the fact that the vapor barrier is 6 ml or is it overkill in the fact the i even put a vapor barrier on top of the insulation?
Re: 6 mil plastic as underbelly wrap?
Posted: Sun Apr 24, 2011 11:05 am
by Greg
Sealing the top side as well. Don't get me wrong go ahead and do it.
Greg
Re: 6 mil plastic as underbelly wrap?
Posted: Sun Apr 24, 2011 8:55 pm
by creekside
i was just clarifying...i appreciate your advice...thank you