How Many Inches Of Cellulose In Attic

R 30 9 5 deep 30lb.

How many inches of cellulose in attic.

Dense gray or near white may have black specs. It can be located on a card left by the previous installer printed on the attic insulation or you can measure it yourself. Light weight yellow pink or white. Actions 2013 sep 12 4 25 pm.

It is pulverized into a fine powder that adheres and remains a part of the insulation. According to the insulation institute the cellulose has the r value of 3 7 and this translate to 16 inches for r60. According to the u s. For loose fill such as ecofill multiply the depth by a minimum of r 2 67 per inch.

You can do it yourself for about 500. On the other hand the lose pink or white fibreglass has r value of 2 5 that requires. Small gray flat pieces or fibers from newsprint cellulose 3 7 x depth. Bag dimension 14 x 15 x 28 long or 3 4 cu ft.

For loose fill cellulose this translates to a total depth ranging from 8 inches up to 16 inches. The cellulose product home comfort insulation uses is treated with 100 borate fire retardant formula. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding. The pros charge 1 500 to 2 000 to do a 1 200 sq ft.

Fiberglass and cellulose insulation have r values of 2 9 to 3 8 per inch while sprayed foam insulation can go as high as 8 0 per inch. If the attic is already insulated you ll want to check the current r value. Fiberglass 2 5 x depth. That was filled up 99 with just a few inches for ventilation.

If you need to add insulation in your attic save big by blowing in cellulose insulation yourself. Take your measuring tape and measure how deep it is. R 20 2 x 6 wall 30lb bg 40 bags 30lb. R 13 2 x 4 wall 30lb bg 27 bags.

Depth inches total insulation r value. I had about r 19 in my attic and the most i could add was 8 10 of cellulose on top of that. Loose fill cellulose is relatively inexpensive yet still has an r value of about 3 5 per inch of thickness compared to fiberglass r value between r3 to r4 per inch. How much does attic insulation cost.

Fortunately attic insulation can be upgraded simply by adding more to achieve the recommended. Vermiculite or perlite 2 7 x depth. Department of energy it s recommended that attics have an r 38 to r 49 or about 12 to 15 of fiberglass or cellulose insulation. It appears that 16 deep is to get r60 for attic loose fill cellulose insulation and 24 deep is to get r60 for attic loose fill fibreglass insulation.

Rock wool 2 8 x depth. Cellulose will settle after installation creating a dense continuous layer helping to block air transfer through any holes into your attic.