Install Insulation In Attic Rafters

Install the second layer of insulation.

Install insulation in attic rafters.

If your attic is going to be converted into livable space then you will need to insulate the roof 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. 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.

Complete coverage of the attic floor along with sealing air leaks will ensure you get the best performance from your insulation. Working on your knees in an attic for long periods of time can be very hot and tiring. Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home. The existing layer should sit at the top of the joists.

How to install rafter insulation. Both can be added to uninsulated attics or layered over existing material. 2 snap a chalk line between the length measurements. If using insulation with a vapor retardant facing install the material with the vapor retardant side down.

To find out if you have enough attic insulation measure the thickness of the insulation. 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. Loose fill or batt the common term for blanket insulation. In part 7 you ll learn how to insulate the attic rafters.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints. Start by tucking small pieces of insulation between the rafters against the rafter vents. See more on different types of insulation.

Lay the batts across the ceiling joists covering the existing insulation. You can leave any existing insulation in place as long as it isn t damaged. Loose fill insulation is usually less expensive to install than batt insulation and provides better coverage when installed properly. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place.

Loose fill or batt insulation is typically installed in an attic. To completely cover your attic floor with insulation out to the eaves you need to install rafter vents also called insulation baffles. The baffles will allow circulation to continue even though insulation has been installed directly in the. If it doesn t add a small piece of insulation over top.