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Presentation:

Why Are Attics Insulated With Open-Cell Spray Foam So Damp?

Why Are Attics Insulated With Open-Cell Spray Foam So Damp?
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Windows are installed as “outies” in this wall assembly using a self-adhered membrane water and air control layer with continuous exterior insulation

Windows are installed as “outies” in this wall assembly using a self-adhered membrane water and air control layer with continuous exterior insulation
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Windows are installed in new framing in preparation for adding exterior spray foam insulation

Windows are installed in new framing in preparation for adding exterior spray foam insulation
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Wiring runs are covered with canned spray foam to maintain the continuous foam layer that covers the inside and outside of these ICF block walls.

Wiring runs are covered with canned spray foam to maintain the continuous foam layer that covers the inside and outside of these ICF block walls.
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With a quality installation, tape can last a long time

With a quality installation, tape can last a long time
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Without an exhaust fan ducted to the exterior, particles resulting from cooking can accumulate on walls and ceilings, and will be present in the air where they can damage occupants' respiratory systems

Without an exhaust fan ducted to the exterior, particles resulting from cooking can accumulate on walls and ceilings, and will be present in the air where they can damage occupants' respiratory systems
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Wood blocking for future PV panel installation is installed in the layers of polyisocyanurate rigid foam insulation during a flat roof retrofit

Wood blocking for future PV panel installation is installed in the layers of polyisocyanurate rigid foam insulation during a flat roof retrofit
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Wrap batt insulation around pipe loosely enough not to compress the insulation and secure with wire or tape

Wrap batt insulation around pipe loosely enough not to compress the insulation and secure with wire or tape
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Wrap the air-sealed chimney with mineral wool insulation to prevent contact with the warm brick when attic insulation is re-installed around the chimney

Wrap the air-sealed chimney with mineral wool insulation to prevent contact with the warm brick when attic insulation is re-installed around the chimney
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Wrap the insulation around the pipe in a spiral fashion

Wrap the insulation around the pipe in a spiral fashion
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Wrong - Air leakage from the conditioned space to the basement foundation wall can lead to condensation or moisture issues in a conventional blanket insulation installation.

Wrong - Air leakage from the conditioned space to the basement foundation wall can lead to condensation or moisture issues in a conventional blanket insulation installation.
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Wrong - Batt insulation does not provide complete coverage across the attic floor so ceiling joists are exposed resulting in thermal bridging.

Wrong - Batt insulation does not provide complete coverage across the attic floor so ceiling joists are exposed resulting in thermal bridging.
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Wrong - Batt insulation installed backward

Wrong - Batt insulation installed backward
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Wrong - Batt insulation is poorly installed leaving gaps along the ceiling.

Wrong - Batt insulation is poorly installed leaving gaps along the ceiling.
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Wrong - Cavity insulation not installed properly

Wrong - Cavity insulation not installed properly
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Wrong - Cavity insulation not installed properly

Wrong - Cavity insulation not installed properly
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Wrong - Cavity insulation not installed properly

Wrong - Cavity insulation not installed properly
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Wrong - Ceiling insulation is not completely installed and air barrier is missing.

Wrong - Ceiling insulation is not completely installed and air barrier is missing.
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Wrong - Code requires a kitchen exhaust fan duct to be a smooth metal duct (galvanized steel, stainless steel, or copper) and to terminate outside, not in an attic or crawlspace.

Wrong - Code requires a kitchen exhaust fan duct to be a smooth metal duct (galvanized steel, stainless steel, or copper) and to terminate outside, not in an attic or crawlspace.
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Wrong - Cold spots along the top plate combined with lack of ventilation have encouraged mold growth along this bathroom ceiling.

Wrong - Cold spots along the top plate combined with lack of ventilation have encouraged mold growth along this bathroom ceiling.
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Wrong - Continuous rigid insulation was not installed to continuously cover the sheathing.

Wrong - Continuous rigid insulation was not installed to continuously cover the sheathing.
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Wrong - Corner not insulated

Wrong - Corner not insulated
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Wrong - Craft faced batt insulation is compressed behind PEX pipe instead of being sliced to fit around it.

Wrong - Craft faced batt insulation is compressed behind PEX pipe instead of being sliced to fit around it.
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Wrong - Craft faced batt insulation is not cut to fit around PEX plumbing pipe.

Wrong - Craft faced batt insulation is not cut to fit around PEX plumbing pipe.