8¼ ” thick, R-30C EcoTouch® Thermal Batt insulation prevents moisture damage and helps assure long roof life by providing 1" of ventilation air space between the insulation and roof deck.
Is R30 thicker than R19?
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 larger the R value, the better the insulation value.Dec 28, 2013
Can you put R30 insulation in 2x4 walls?
R-30 fiberglass insulation is designed to be in a roof or ceiling cavity framed with 2x10s. It is way too thick for 2x4 walls.Nov 26, 2010
Is R30 enough insulation for attic?
The average recommended level is 14 inches of R49. In Zone 2, the average minimum requirement for attic insulation is 9 inches of R30 fill. The average recommended level is 17 inches of R60. In Zone 3, the average minimum requirement for attic insulation is 9 inches of R30 fill.
How many inches of ISO is R30?
A spray foam roofing system has an R-value of 6.5 per sq. inch of thickness. Most of the time, spray foam can be directly applied to existing roofing systems, but in some cases, a polyiso board is needed. If you install 2 inches of ISO board (R-11) and 3 inches of spray foam (R-19.8), you'll be over an R-30.
How wide is R30 insulation?
Owens Corning R-30 Attic 88-sq ft Faced Fiberglass Batt Insulation (24-in W x 48-in L)
How much space do you need for R30 insulation?
For future reference, here is the cavity depth you need for some common insulation r-values: 3.5 inches --- R13. 6 inches --- R19. 9 inches --- R30.Feb 6, 2010
What is the R-value of 4 inches of blown insulation?
Blown-in fiberglass has an R-value of 2.2 to 2.7 per inch.Nov 21, 2017