R13 Attic Insulation

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

R13 attic insulation.

Insulation level are specified by r value. Owens corning ecotouch r 15 30 sq ft single faced fiberglass roll insulation 15 in w x 24 ft l item 821444. Thermal values range from a low of r 4 to a high of r 45. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

R value is a measure of insulation s ability to resist heat traveling through it. The higher the r value the better the thermal performance of the insulation. Most manufacturers produce an r 13 batt that fits into a 2 by 4. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

Owens corning r 13 ecotouch pink kraft faced insulation fiberglass insulation batt 16 in. However the r value of insulation also depends on proper installation to avoid compressing it. Johns manville r 13 40 sq ft single faced fiberglass roll insulation with sound barrier 15 in w x 32 ft l item 31116. The r value of insulation indicates its thermal resistance to the flow of heat.

Higher numbers indicate insulation that is more effective. Standard fiberglass insulation batts or blankets provide an r value of 2 2 to 3 8 per inch of thickness.