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Air seal the floor above an unconditioned basement or crawlspace and make sure floor insulation is in full contact with the underside of the subfloor.
Air seal the floor above an unconditioned basement or crawlspace and make sure floor insulation is in full contact with the underside of the subfloor.
Air seal the floor above an unconditioned basement or crawlspace and make sure floor insulation is in full contact with the underside of the subfloor.
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Exterior fiberglass insulation on this new home was (incorrectly) cut to terminate below-grade after backfill, which will expose the above-grade portions of the foundation wall to cold temperatures
Exterior fiberglass insulation on this new home was (incorrectly) cut to terminate below-grade after backfill, which will expose the above-grade portions of the foundation wall to cold temperatures
Exterior fiberglass insulation on this new home was (incorrectly) cut to terminate below-grade after backfill, which will expose the above-grade portions of the foundation wall to cold temperatures
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Exterior XPS basement insulation is correctly installed to completely cover the foundation wall
Exterior XPS basement insulation is correctly installed to completely cover the foundation wall
Exterior XPS basement insulation is correctly installed to completely cover the foundation wall
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Foil-faced rigid foam and spray foam can be used to insulate a basement on the interior; use good moisture management techniques to keep the basement dry
Foil-faced rigid foam and spray foam can be used to insulate a basement on the interior; use good moisture management techniques to keep the basement dry
Foil-faced rigid foam and spray foam can be used to insulate a basement on the interior; use good moisture management techniques to keep the basement dry
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Infrared image of a rim joist
Infrared image of a rim joist
Infrared image of a rim joist
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Right - Air barrier is present and installed between the floor system and unconditioned space.
Right - Air barrier is present and installed between the floor system and unconditioned space.
Right - Air barrier is present and installed between the floor system and unconditioned space.
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Right - Sub-floor insulation is properly installed and supported.
Right - Sub-floor insulation is properly installed and supported.
Right - Sub-floor insulation is properly installed and supported.
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Right – Penetrations through the floor are air sealed
Right – Penetrations through the floor are air sealed
Right – Penetrations through the floor are air sealed
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Right – The rim joists above the pre-insulated basement walls are sealed and insulated with spray foam to prevent air leakage at this juncture in the building envelope.
Right – The rim joists above the pre-insulated basement walls are sealed and insulated with spray foam to prevent air leakage at this juncture in the building envelope.
Right – The rim joists above the pre-insulated basement walls are sealed and insulated with spray foam to prevent air leakage at this juncture in the building envelope.
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Wrong - No air barrier is present between the floor system and unconditioned space.
Wrong - No air barrier is present between the floor system and unconditioned space.
Wrong - No air barrier is present between the floor system and unconditioned space.
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Wrong - Sub-floor insulation has gaps, compression, and misalignment.
Wrong - Sub-floor insulation has gaps, compression, and misalignment.
Wrong - Sub-floor insulation has gaps, compression, and misalignment.
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Wrong - Sub-floor insulation is not properly installed or supported.
Wrong - Sub-floor insulation is not properly installed or supported.
Wrong - Sub-floor insulation is not properly installed or supported.
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Wrong - This batt insulation is not aligned with the subfloor and joists.
Wrong - This batt insulation is not aligned with the subfloor and joists.
Wrong - This batt insulation is not aligned with the subfloor and joists.
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Wrong – Penetration through the floor is not air sealed
Wrong – Penetration through the floor is not air sealed
Wrong – Penetration through the floor is not air sealed
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