Install Insulation In Attic Rafters

The existing layer should sit at the top of the joists.

Install insulation in attic rafters.

To find out if you have enough attic insulation measure the thickness of the insulation. The baffles will allow circulation to continue even though insulation has been installed directly in the. In part 7 you ll learn how to insulate the attic rafters. Begin at a wall and work toward the center of the attic floor or the entryway carefully placing insulation between joists and ensuring a snug fit.

For diy attic insulation you ve got two choices. You can leave any existing insulation in place as long as it isn t damaged. Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints. If it doesn t add a small piece of insulation over top.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Measure the length and width between two rafters in your attic and transfer the measurements to a 4 ft by 8 ft of rigid foam insulation board. In part 6 of this series on attic insulation we dealt with proper attic ventilation and how it goes hand in hand with proper insulation. To completely cover your attic floor with insulation out to the eaves you need to install rafter vents also called insulation baffles.

Install the second layer of insulation. See more on different types of insulation. If using insulation with a vapor retardant facing install the material with the vapor retardant side down. Loose fill or batt insulation is typically installed in an attic.

Lay the batts across the ceiling joists covering the existing insulation. 2 snap a chalk line between the length measurements. Working on your knees in an attic for long periods of time can be very hot and tiring. At the perimeter of the attic lay the insulation up to the roof rafters but keep it away from plywood roof sheathing.

To install insulation batts and blankets. Start by tucking small pieces of insulation between the rafters against the rafter vents. Both can be added to uninsulated attics or layered over existing material. Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home.

Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. Loose fill insulation is usually less expensive to install than batt insulation and provides better coverage when installed properly. Garages built without attics are. Loose fill or batt the common term for blanket insulation.