Insulation Between Narrow Attic Joists

1a attic access door.

Insulation between narrow attic joists.

Insulation rolls available in pre cut widths to fit between studs and joists. Uniform stud spacing is a mainstay of today s construction practices because it allows builders to use wallboard. If the air distribution is in the attic space then consider insulating the rafters to move the distribution into the conditioned space. Remove all blown in insulation 2.

In order to create a deeper cavity for the insulation it will be necessary to attach wood framing to the existing rafters through a process called furring. So insulating the floor of the attic is not only the best solution but it is also the simplest and cheapest. They come with or without a paper or foil facing that acts as a vapor barrier. Start in a corner away from the attic hatch and fit the roll insulation between the joists facing against the drywall.

How to install batten insulation when the studs are wider than 16 inches. In practical terms you can choose between mineral wool or insulation boards. Use wire insulation supports to hold attic insulation up between beams keeping your house well insulated is a good but annoying necessit. If you decide on mineral wool such as glass wool or rock wool you will need to put down a damp proof membrane.

Ideal for attics floors and other areas where longer runs are needed. Come in continuous lengths ranging from 20 to 40 linear feet. When using fiberglass insulation the pink stuff the attic roof rafter will need to be at least 16 deep. Use spray foam to seal the foam between the joists this will both insulate and create my air barrier for this portion of the attic.

Cut foam board to fit in between joists. If your house doesn t already have a layer of insulation between the joists you ll need to install one before adding a layer over the joists. In unfinished attic spaces insulate between and over the floor joists to seal off living spaces below.