Putting Plastic Sheeting Over Insulation

Without such a barrier condensation can infiltrate your home s walls and insulation creating a substantial risk of mold and mildew.

Putting plastic sheeting over insulation.

The humid air is indoors. The plastic and the insulation will eliminate any moisture problems you have in the crawlspace such as water droplets collecting on the concrete walls. More use the plastic these days without paper faced insulation. Plastic sheeting can also help turn a crawl space into a usable storage area.

Plastic on the outer surface of a wall in cold weather could cause problems. Picture an ice cold can of soda on a sweltering hot day. 12 ft x 400 ft clear 0 31 mil plastic sheeting. Item 491792 model hslw12 400.

This article will show you how to add 6 mil plastic sheeting on the ground and insulate the walls in your crawlspace. Soon water pours off the can. How to install poly over insulation. Homeowners use plastic to cover their crawl spaces to control moisture and create a barrier against vapor.

To each is own some believe the plastic works better. The best vapor barrier to use is roll of plastic sheeting. Most insulation is made of fiberglass and fits into the walls between the studs before drywall is installed. The colder the contents the more beads of sweat that form on the sides.

Install the plastic sheeting only after the insulation wiring and plumbing have been completed. Overlapping paper tabs on faced insulation and stapling is why its on there. If water vapor diffuses or infiltrates into the wall cavity and finds the cool surface moisture problems can occur. After the insulation is installed it is necessary to cover it up with a vapor barrier so the glass fibers are not inhaled.

If you want to put something on the bottom of the joists to hold the insulation in place use chicken wire landscape fabric or housewrap so any water vapor from inside the house can escape. We use foil faced rigid insulation to keep the space under the house dry. Paper faced insulation is the same as using plastic vapor. Stretch the plastic sheet tightly across the top of the wall and staple it to the studs and plates.