Putting Plastic Sheeting Over 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.

Putting plastic sheeting over insulation. Item 491792 model hslw12 400. After the insulation is installed it is necessary to cover it up with a vapor barrier so the glass fibers are not inhaled. Plastic on the outer surface of a wall in cold weather could cause problems. The humid air is indoors.

We use foil faced rigid insulation to keep the space under the house dry. Overlapping paper tabs on faced insulation and stapling is why its on there. Stretch the plastic sheet tightly across the top of the wall and staple it to the studs and plates. 12 ft x 400 ft clear 0 31 mil plastic sheeting.

Picture an ice cold can of soda on a sweltering hot day. How to install poly 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. The cool surface is the sheathing assuming no exterior insulation.

To each is own some believe the plastic works better. Soon water pours off the can. Homeowners use plastic to cover their crawl spaces to control moisture and create a barrier against vapor. If water vapor diffuses or infiltrates into the wall cavity and finds the cool surface moisture problems can occur.

The colder the contents the more beads of sweat that form on the sides. Plastic sheeting can also help turn a crawl space into a usable storage area. More use the plastic these days without paper faced insulation. This article will show you how to add 6 mil plastic sheeting on the ground and insulate the walls in your crawlspace.

Plastic on the outside. The best vapor barrier to use is roll of plastic sheeting. Paper faced insulation is the same as using plastic vapor. Most insulation is made of fiberglass and fits into the walls between the studs before drywall is installed.