Attic Insulation Roll Sizes

Add insulation to attic.

Attic insulation roll sizes.

Insulation for 2x4 walls most wall assemblies especially those in older homes are built with two by four 2x4 studs. Proper attic insulation helps regulate indoor temperature. Measure the length and width of the area you need to insulate. R 38 is the industry standard and the minimum thickness for r 38 is 12 inches.

It prevents heat loss in cold climates and retains cool air in warm. Owens corning r 30 ecotouch pink unfaced fiberglass insulation roll 23 in. A guide to attic insulation. Owens corning ecotouch r 15 30 sq ft single faced fiberglass roll insulation 15 in w x 24 ft l item 821444.

For pricing and availability. Johns manville r 19 48 96 sq ft single faced fiberglass roll insulation 15 in w x 39 17 ft l item 179420. If your current insulation is only five inches deep you will need to add seven inches of insulation to achieve the 12 inch r 38 rating. Insulation our building science makes insulation br smarter.

787 537 00. Use our roll insulation calculator to estimate the amount of wall insulation crawlspace insulation or attic insulation you need for your project. Owens corning attic insulation. Recommended insulation levels for retrofitting existing wood framed buildings.

From schools to businesses to family homes our insulation works everywhere. Measure the area needing insulation. They come with or without a paper or foil facing that acts as a vapor barrier. In most wall applications you will use r 13 or r 15 kraft faced fiberglass insulation rolls for these two by four stud walls.

The main goal of attic insulation in the house is to keep the rooms below warm in winter and cool in summer. Its expert engineering lets you create the most comfortable environment without compromising your design. Attic insulation is the easiest way to improve your house s energy efficiency. Since modern two by fours are not 4 inches the true depth of the wall cavity is 3 1 2 inches.