Putting Plastic Sheeting Over Insulation

If you re referring to insulation in an attic you shouldn t put plastic sheeting over the top of it either for the same reason.

Putting plastic sheeting over insulation.

Plastic on the outside. To each is own some believe the plastic works better. If water vapor diffuses or infiltrates into the wall cavity and finds the cool surface moisture problems can occur. The plastic and the insulation will eliminate any moisture problems you have in the crawlspace such as water droplets collecting on the concrete walls.

Overlapping paper tabs on faced insulation and stapling is why its on there. Picture an ice cold can of soda on a sweltering hot day. Item 491792 model hslw12 400. Plastic on the outer surface of a wall in cold weather could cause problems.

This article will show you how to add 6 mil plastic sheeting on the ground and insulate the walls in your crawlspace. We use foil faced rigid insulation to keep the space under the house dry. Without such a barrier condensation can infiltrate your home s walls and insulation creating a substantial risk of mold and mildew. Plastic sheeting can also help turn a crawl space into a usable storage area.

More use the plastic these days without paper faced insulation. Install the plastic sheeting only after the insulation wiring and plumbing have been completed. Most insulation is made of fiberglass and fits into the walls between the studs before drywall is installed. Stretch the plastic sheet tightly across the top of the wall and staple it to the studs and plates.

The humid air is indoors. The best vapor barrier to use is roll of plastic sheeting. After the insulation is installed it is necessary to cover it up with a vapor barrier so the glass fibers are not inhaled. Homeowners use plastic to cover their crawl spaces to control moisture and create a barrier against vapor.

12 ft x 400 ft clear 0 31 mil plastic sheeting. How to install poly over insulation. The cool surface is the sheathing assuming no exterior insulation. 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.