Putting Plastic Sheeting Over Insulation

Most insulation is made of fiberglass and fits into the walls between the studs before drywall is installed.

Putting plastic sheeting over insulation. In the vapor barrier. 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. How to install poly over insulation.

Unfaced batt insulation friction fit between studs in walls with poly vapor barrier over walls and ceilings blown in attics with minimum r 40 insulation attention to detail. 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. The best vapor barrier to use is roll of plastic sheeting. 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.

Plastic on the outer surface of a wall in cold weather could cause problems. Item 491792 model hslw12 400. Paper faced insulation is the same as using plastic vapor. Overlapping paper tabs on faced insulation and stapling is why its on there.

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. This article will show you how to add 6 mil plastic sheeting on the ground and insulate the walls in your crawlspace. More use the plastic these days without paper faced insulation.

12 ft x 400 ft clear 0 31 mil plastic sheeting. The cool surface is the sheathing assuming no exterior insulation. 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 outside.

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 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.

Stretch the plastic sheet tightly across the top of the wall and staple it to the studs and plates. If properly done this should not cause a condensation problem in the wall cavity unless you are leaking interior air thru gaps etc. The humid air is indoors.