On center 2 in.
R49 cellulose insulation thickness.
Product thickness in 13 5 in 3 13 75 in 3 14 in 1 eco options category.
As a benchmark one inch of solid wood has an r value of 1.
Recommended inches of cellulose attic insulation.
Framing attics and ceilings.
Input depth of existing blown in insulation in inches.
Loose fill such as fiberglass cellulose and mineral wool 8 23 inches thick 30 0 45 to 1 35 0 03 50 0 75 to 2 25 open cell polyurethane spray foam 3 5 inches thick 12 6 1 70 to 2 50 0 17 closed cell polyurethane spray foam 1 inch thick 6 5 1 30 to 2 00 0 25 expanded polystyrene foam board 1 inch thick.
It is pulverized into a fine powder that adheres and remains a part of the insulation.
R 49 kraft faced insulation is formaldehyde free fiberglass insulation r 49 kraft faced insulation is formaldehyde free fiberglass insulation protected on one side with moisture resistant kraft facing.
Owens corning pink insulation is soft to the touch and easy to install.
Cellulose will settle after installation creating a dense continuous layer helping to block air transfer through any holes into your attic.
If there s still not enough room you can always add a layer of foam board or closed cell spray foam to the top of the roof topped by sheathing or.
Knauf insulation r 49 ecobatt kraft faced fiberglass insulation batt 24 in.
R 49 kraft faced batts come in pre cut 48 in.
Click the button to calculate the approximate r value for this job.
This calculator is to be used as an estimating tool only.
Get free shipping on qualified r49 fiberglass insulation or buy online pick up in store today in the building materials department.
In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and an inch of blown cellulose in an attic has an r value of 3 2 3 7.
As noted above there are lots of higher r value per inch alternatives to fiberglass.
Loose fill cellulose insulation is composed of pulverized paper and fabric material treated with a flame retardant.
Where the irc 2009 recommendations for cold climate attic roof insulation have been adopted r49 is the minimum.
The cellulose product home comfort insulation uses is treated with 100 borate fire retardant formula.
Unlike fiberglass insulation.