Showing results 1 - 28 of 28
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A site-built rafter roof with a raised top plate allows for more insulation underneath.
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After all holes through the ceiling are air-sealed and the baffles have been installed, then the insulation can be installed.
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Baffles provide an air space over the insulation to guide ventilation air from the soffit vents up along the underside of the roof deck
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Failure in attic insulation effectiveness caused by wind washing pushing insulation away from the edges of the attic space.
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Flat roof with cavity spray foam plus loose-fill insulation and gypsum board thermal barrier.
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Floor cavity air pressure is measured by placing a tube into the floor cavity through a small drilled hole
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Floor cavity pressure is measured by inserting a tube into the floor cavity using an extension pole
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Infrared imaging shows cold conditioned air pouring out of the open floor cavities under this attic kneewall into the hot unconditioned attic
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Install a continuous air barrier below or above ceiling insulation and install wind baffles.
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Limited attic access may make it necessary to use a bore scope when inspecting for missing air barriers and insulation in existing buildings.
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Raised heel energy trusses extend past the exterior wall and are deeper at the wall allowing room for full insulation coverage over the top plate of the exterior walls.
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Right - Air barrier is present between the dropped ceiling/soffit and the attic.
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Right - Air barrier is present between the dropped ceiling/soffit and the attic.
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Right - Wind baffle installation will allow proper insulation depth over the top plate.
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Right – Wind baffle installation maintains necessary code clearance between baffle and roof deck
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Right-- IR photo shows how effectively spray foam insulated/air sealed attic kneewall and the floor cavities under kneewall
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The attic kneewall and the open floor cavities under kneewall are both sealed and insulated in one step with spray foam insulation
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The floor cavities under this attic kneewall are completely open to the unconditioned attic space and a prime target for wind washing
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The soffit dam and baffle allow air to flow through the vents without disturbing the insulation covering the top plates
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This kneewall has no top plate and the resulting gap provides a wide-open pathway for air and vapor to travel between the living space and the attic
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Wrong - No air barrier is present between the dropped ceiling/soffit and the attic.
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Wrong - No air barrier is present between the dropped ceiling/soffit and the attic.
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Wrong - This IR image of a second-floor landing shows that attic air is flowing far into the interstitial floor cavity of the second-floor landing
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