Putting Plastic Sheeting Over Insulation

Stretch the plastic sheet tightly across the top of the wall and staple it to the studs and plates.

Putting plastic sheeting over insulation.

Soon water pours off the can. The humid air is indoors. 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.

Plastic on the outside. 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. Most insulation is made of fiberglass and fits into the walls between the studs before drywall is installed. 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. Picture an ice cold can of soda on a sweltering hot day. More use the plastic these days without paper faced insulation.

How to install poly over insulation. Item 491792 model hslw12 400. To each is own some believe the plastic works better. The best vapor barrier to use is roll of plastic sheeting.

The plastic and the insulation will eliminate any moisture problems you have in the crawlspace such as water droplets collecting on the concrete walls. Without such a barrier condensation can infiltrate your home s walls and insulation creating a substantial risk of mold and mildew. If water vapor diffuses or infiltrates into the wall cavity and finds the cool surface moisture problems can occur. The cool surface is the sheathing assuming no exterior insulation.

Overlapping paper tabs on faced insulation and stapling is why its on there. The colder the contents the more beads of sweat that form on the sides. 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. Paper faced insulation is the same as using plastic vapor.