Attic Insulation Layers

Achieving greater r values in exterior walls in exterior walls add insulating sheathing to achieve a greater r value in your wall system.

Attic insulation layers.

Because the simplest and cheapest way to insulate an attic is to add material to the floor. Fire resistant attic insulation fire resistant attic insulation is a layer of fiber that reduces the risk of fires starting in the attic while at the same time decrease the energy demands of heating and cooling systems. Blown in insulation consists of bags of fiberglass or cellulose that are chopped up and blown in to the attic or wall from a machine. The best approach for a vented attic in a cold climate is installing a layer of drywall with a good coat of latex paint the paint creates a semi permeable vapor barrier.

A guide to proper attic insulation. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. So with cold weather. The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below.

Plan to pull up the flooring and layer new insulation on top of the old. You can achieve better thermal performance in your attic by adding an additional layer of insulation. Because of this this method will normally require you to hire a professional.