How To Wrap Crawl Space Piers. The alternative to pumping concrete is installing a polyethylene liner or membrane. This is done by placing a heavy plastic vapor barrier over the ground under the structure and extending it up along the perimeter walls.
I placed them at either end of the crawl space where i could get to them pretty easily through an access door, with a fan in the center as well as the humidity sensor. This is done by placing a heavy plastic vapor barrier over the ground under the structure and extending it up along the perimeter walls. Many building professionals now recognize that building an unventilated crawl space (or closing vents after the crawl space dries out following construction) is the best option in homes using proper moisture control and exterior drainage techniques in.
The 2005 and 2009 studies cited above demonstrated that the minimum thickness required to stop the moisture is a 6 mil polyethylene liner (1 mil is equal to 1/1000 of an inch.) most crawspace liners look the same.
I did in fact initially just install one unit, but the other end of the crawl space did not get dry enough. This is done by placing a heavy plastic vapor barrier over the ground under the structure and extending it up along the perimeter walls. We then wrap your piers with a reinforced 12 mil polyethylene moisture barrier. Ion technologies fresh & clean crawl space ventilation system.