Product thickness in 13 5 in 3 13 75 in 3 14 in 1 eco options category.
R49 cellulose insulation thickness.
This calculator is to be used as an estimating tool only.
Click the button to calculate the approximate r value for this job.
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.
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.
Get free shipping on qualified r49 fiberglass insulation or buy online pick up in store today in the building materials department.
Kraft faced insulation has a vapor retarder that helps to control moisture.
Along with knowing the r value of a particular insulation it is also important to calculate the r value of a total system.
It is pulverized into a fine powder that adheres and remains a part of the insulation.
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.
The cellulose product home comfort insulation uses is treated with 100 borate fire retardant formula.
Where the irc 2009 recommendations for cold climate attic roof insulation have been adopted r49 is the minimum.
Owens corning pink insulation is soft to the touch and easy to install.
Recommended inches of cellulose attic insulation.
R 49 kraft faced batts come in pre cut 48 in.
Knauf insulation r 49 ecobatt kraft faced fiberglass insulation batt 24 in.
Framing attics and ceilings.
Cellulose will settle after installation creating a dense continuous layer helping to block air transfer through any holes into your attic.
As a benchmark one inch of solid wood has an r value of 1.
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.
Input depth of existing blown in insulation in inches.
On center 2 in.
As noted above there are lots of higher r value per inch alternatives to fiberglass.
