Putting Insulation In Attic Ceiling

Use our roll insulation calculator to estimate how much roll or batt insulation you ll need.

Putting insulation in attic ceiling.

But saving 1 000 or more with blown in ceiling insulation will make up for your aching back. The batting material must be faced and. One for attic prep and the second to actually blow the insulation. Insulating attic floors unfinished or uninsulated attics need a layer of protection against air migration.

When installing multiple layers of insulation for optimal thermal performance install the first layer bottom layer parallel to attic framing members and flush with both bottom and top. Rigid foam board insulation can be used in the ceiling as well. You can do it yourself for about 500. The standard width for joists is 24 inches.

Blowing attic insulation isn t hard but it s dusty sweaty work. Purchase rolls or packages of insulation that will fit in the spaces between the ceiling joists. The chart included below shows you the approximate thickness of each type of insulation you should ideally have in the attic. 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.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Set up a stepladder tall enough to work comfortably from. By the end of the weekend you re going to be sore and tired. Work from the perimeter of the attic toward the door or hatch so that you don t trample all over the insulation you just put in.

How to install attic insulation over existing insulation. You only want one vapor barrier in your attic and it should be as close to the ceiling as possible to prevent warm moist air from coming up from the heated house and condensing when it hits the cold air in the attic. In the attic install a card that indicates insulation levels in the house to meet code requirements. When you do the measuring make sure you have plenty of light to work by and work on a cool day.

If you re insulating framed walls make sure the insulation is the correct thickness for your wall studs. As a result some homeowners may find it more desirable to place rigid board insulation on the floor and cover it up with plywood. Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing. To make insulating an attic easier grab a helper and set aside two days.

Install batting between the attic s floor joists. The installation of loose fill insulation often renders the attic as unusable for storage purposes due to the loose fill on the floor.