Rigid Foam Insulation

Air Sealing Kneewalls

by Paul LaGrange

Any attic wall that adjoins an interior space should be insulated and air sealed! Where air barriers (See Info Sheet #1.3) are not installed on the unconditioned (attic) side of the walls, very hot or very cold air in the unconditioned space can easily flow through and around the wall insulation.   Figure 1 depicts cold […]


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