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In addition to air sealing and insulation the surface of this Annandale VA attic, we needed to treat the walls too. Removing the old traditional batt insulation was step one. We then used the orange ZypFoam to seal up and cracks or places when air could come in our out. Afterwards we cut SilverGlo insulation panels to fit the wall and then used ZypFoam again to seal that. When the sun hits the outside of this home, this wall will keep the heat from building up on =side of the attic.