What is the difference between r13 and r15 insulation?

[yellowcat832]

R15 should be better than R13 by a little bit in the wall. If you have steel studs instead of wood, then the R15 and R13 walls would be about the same because of high conductivity of the steel. You will never get an R15 wall with R15 insulation if it was tested as a composite system.

[greencat217]

Excellent Thermal Performance Owens Corning R-15 EcoTouch insulation is specifically engineered to solve the efficiency problems of exterior 2x4 walls. “High density” means more fibers per square inch. 3½ thick R-15 EcoTouch insulation delivers 36% more R-value than standard R-11 fiber glass insulation.

Beside above, what is the difference between r13 and r19 insulation? The bigger the R value, the better the insulation is at slowing down the heat transfer. So R19 is better insulation than R13, and R30 is better than R19. The depth of the 2x4 is 3.5 inches, which will accommodate R11 or R13 insulation. New homes with 2x6 walls will accommodate R19 or R21 insulation.

Consequently, is R 13 wall insulation good?

Although the U.S. Department of Energy rates R-13 insulation as good for use in walls in southern areas of the country, it rates R-19 insulation higher, designating it as great. That is because R-19 insulation provides more thermal insulation than R-13 does.

Is there a big difference between r11 and r13 insulation?

R11 is for sound and should never be used for exterior walls. It can be, but youre spending money with little benefit. R13 is standard 2x4 insulation. R13 is also considered a higher density batt, if you look and feel the 2 (r11 and r13), there is huge difference.