Highest R Value Insulation For Exterior Walls

Home depot provides a map of the u s.

Highest r value insulation for exterior walls.

The higher the r value the better the thermal performance of the insulation. There are three methods of wall construction that lend themselves to high r walls at the least cost. In order to achieve the higher insulation r value of r 21 a different type of. Install sufficient exterior rigid insulation on a single frame wall to achieve the necessary insulating value.

Use r 19 or r 21 kraft faced fiberglass insulation for two by six 2x6 walls. For every type and material of insulation check the r value per inch of thickness that the manufacturer has listed. A higher insulation r value usually means a higher price point as well. R value is a measure of insulation s ability to resist heat traveling through it.

See the department of energy s doe ranges for recommended levels of insulation below. That indicates which value is best for each region. If your exterior walls are constructed from 2 by 4 inch studs the most insulation that can go into the wall while retaining its r value is r 13 or r 15 as these are both made to fit a cavity 3 1 2 inches deep. One inch thick rigid insulation can generally be attached to the outside of the structural sheathing without adding additional.

Best insulation for 2x4 and 2x6 wall studs. The r value of insulation indicates how well it resists heat and according to home depot the higher the r value the greater the insulation performance what is the ideal r value for exterior walls. While wall insulation is limited by the width of the studs different materials provide higher or lower r values. This combination ensures that the insulation is neither too loose nor too tightly packed within the walls.

The higher the r value the better the thermal performance of the insulation. The table below shows what levels of insulation are cost effective for different climates and. Recommended home insulation r values. Fiberglass batts for standard 2 4 walls are now available in low medium and high density products that range from r 11 to r 15.

Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. Fiberglass vats are the standard insulator for 2 inch by 4 inch wall framing and are rated r 11 through r 15. Typically a higher insulation r rating means better climate control and better energy efficiency for your home.