Blowing R13 In Attic

Loose fill cellulose insulation is composed of pulverized paper and fabric material treated with a flame retardant.

Blowing r13 in attic.

Existing attic 3 4 inches of insulation r 38. Click the button to calculate the approximate r value for this job. Start blowing around the edges making sure these are completely filled before you work your way into the center. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Unlike fiberglass insulation. Input depth of existing blown in insulation in inches. Whenever exterior siding is removed on an. Loose fill insulation comes in a variety of materials.

Drill holes in the sheathing and blow insulation into the empty wall cavity before installing the new siding and. Floors r 25 to r 30. With an attic this type of insulation is just one option along with the other popular alternatives fiberglass batts or blown in fiberglass. The types of insulation that were most commonly made with asbestos are loose fill also called blown in insulation.

But with enclosed walls blowing in loose fill cellulose insulation is still by far the most practical and cost effective method. Blowing the insulation should take less than 1 5 hours and the whole job can be completed in less than 4 hours based on a 1 000 sq. Walls should be between r 19 to r 21 basement walls r13 to r 19. If your attic or wall insulation is in batt or blanket form whether it s fiberglass cellulose or another material you generally don t have to be concerned about asbestos.

Station the blowing machine near the attic ladder and bring the hose with you into the attic. With blown in insulation you can expect an r value of 2 2 to 2 7 per inch for fiberglass and between 3 2 and 3 8 per inch of cellulose. More product details close low dust cellulose blown in insulation 19 lbs. A how to on installing certainteed s insulsafe sp and truecomfort blown in fiber glass insulation into attic applications including application techniques.

Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. This calculator is to be used as an estimating tool only.