Install Insulation In Attic Rafters

2 snap a chalk line between the length measurements.

Install insulation in attic rafters.

Both can be added to uninsulated attics or layered over existing material. See more on different types of insulation. If your attic is going to be converted into livable space then you will need to insulate the roof rafters. At the perimeter of the attic lay the insulation up to the roof rafters but keep it away from plywood roof sheathing.

Lay the batts across the ceiling joists covering the existing insulation. To find out if you have enough attic insulation measure the thickness of the insulation. The existing layer should sit at the top of the joists. Rafter vents should be placed in your attic ceiling in between the rafters at the point where your attic ceiling meets your attic floor.

In part 7 you ll learn how to insulate the attic rafters. Start by tucking small pieces of insulation between the rafters against the rafter vents. Working on your knees in an attic for long periods of time can be very hot and tiring. Loose fill insulation is usually less expensive to install than batt insulation and provides better coverage when installed properly.

Install the second layer of insulation. Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints. 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. Garages built without attics are.

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. Rafter vents come in 4 foot lengths and 14 1 2 and 22 1 2 inch widths for different rafter spacings. You can leave any existing insulation in place as long as it isn t damaged. 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.

The baffles will allow circulation to continue even though insulation has been installed directly in the. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. Loose fill or batt the common term for blanket insulation. To install the rafter vents staple them directly to the roof decking.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. How to install rafter insulation. Apply insulation between rafters when finishing an attic into a heated room or when building a cathedral ceiling in the home. If using insulation with a vapor retardant facing install the material with the vapor retardant side down.

If it doesn t add a small piece of insulation over top.