How Many Inches Of Cellulose In Attic

For loose fill such as ecofill multiply the depth by a minimum of r 2 67 per inch.

How many inches of cellulose in attic.

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. Vermiculite or perlite 2 7 x depth. Bag dimension 14 x 15 x 28 long or 3 4 cu ft. Click the button to calculate the depth in inches and pounds of total insulation required for this job.

Current insulation levels how much you already have will dictate how many more inches you need. It can be located on a card left by the previous installer printed on the attic insulation or you can measure it yourself. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. If the attic is already insulated you ll want to check the current r value.

Air sealing air leaks are a major cause of losing warm air. Input length width and desired r value of the area to be insulated. For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. Take your measuring tape and measure how deep it is.

Most home centers sell bagged cellulose insulation and many provide the blower for a minimal fee or free when you buy a certain number of bags usually 10 or more. Rock wool 2 8 x depth. You can also rent the blowers from a rental center. R 30 9 5 deep 30lb.

R 20 2 x 6 wall 30lb bg 40 bags 30lb. And you can blow it easily and quickly into odd shaped spaces in an attic where access is limited and dragging up batts is tough. Depth inches total insulation r value. Small gray flat pieces or fibers from newsprint cellulose 3 7 x depth.

These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. Bg 30 bags. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding. R 13 2 x 4 wall 30lb bg 27 bags.

Fiberglass 2 5 x depth. For loose fill cellulose this translates to a total depth ranging from 8 inches. This calculator is to be used as an estimating tool only. Light weight yellow pink or white.

Use this calculator to determine how many bags of thermoshield insulation you will need to insulate your attic for the optimal energy efficiency. Dense gray or near white may have black specs. In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended.