Attic Insulation Roll Sizes

Measure the length and width of the area you need to insulate.

Attic insulation roll sizes.

Owens corning r 30 ecotouch pink unfaced fiberglass insulation roll 23 in. Measure the area needing insulation. Proper attic insulation helps regulate indoor temperature. Owens corning ecotouch r 15 30 sq ft single faced fiberglass roll insulation 15 in w x 24 ft l item 821444.

Since modern two by fours are not 4 inches the true depth of the wall cavity is 3 1 2 inches. A guide to attic insulation. Attic insulation is the easiest way to improve your house s energy efficiency. Existing 3 4 inches of insulation.

787 537 00. 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. They come with or without a paper or foil facing that acts as a vapor barrier. It prevents heat loss in cold climates and retains cool air in warm.

Insulation for 2x4 walls most wall assemblies especially those in older homes are built with two by four 2x4 studs. Insulation our building science makes insulation br smarter. Johns manville r 19 48 96 sq ft single faced fiberglass roll insulation 15 in w x 39 17 ft l item 179420. Add insulation to attic.

R 38 is the industry standard and the minimum thickness for r 38 is 12 inches. In most wall applications you will use r 13 or r 15 kraft faced fiberglass insulation rolls for these two by four stud walls. Use our roll insulation calculator to estimate the amount of wall insulation crawlspace insulation or attic insulation you need for your project. Its expert engineering lets you create the most comfortable environment without compromising your design.

Owens corning attic insulation. The main goal of attic insulation in the house is to keep the rooms below warm in winter and cool in summer. Guardian r 13 kraft faced fiberglass insulation roll 23 x 32 61 3 sq. Recommended insulation levels for retrofitting existing wood framed buildings.