Showing results 101 - 139 of 139
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This floor assembly above a vented crawlspace controls vapor and heat transmission by using foil-faced isocyanurate rigid foam insulation installed underneath the floor joists and fiberglass insulation in the floor joist cavities
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This house with interior insulated crawlspace is protected from pests with termite shield at sill plate, borate-treated framing, flashing at end of wall insulation, and a termite inspection gap at the top of the rigid foam
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Unvented air-sealed crawlspace is insulated along the perimeter walls with rigid foam
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Unvented concrete masonry unit crawl space with exterior insulation - designed for termite resistance in moderately infested areas
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Unvented crawl space with interior insulation - designed for termite resistance in heavily infested areas
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Vapor retarder already applied to the floor of the crawlspace and wrapping up the interior perimeter walls, lapped and sealed at the seams
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Vented crawlspace cripple wall has seismic retrofits – plywood is added on interior that fastens to extra blocking added at sill plate and connected to foundation with new anchor bolts
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Water-proof materials cover the exterior side of crawlspace windows in a crawlspace retrofit, while foil-faced rigid foams seals and insulates the inside face of the openings
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Wrong - A typical vented crawlspace in North Carolina exhibits water leakage, poor drainage, and a low-quality vapor retarder that does not cover all of the ground surface and is not sealed to the walls.
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Wrong - A vapor barrier should cover the top of the concrete block pier support in the crawl space.
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Wrong - Crawlspace hatches should have weatherstripping and insulation when excluding the crawlspace from the building thermal envelope.
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Wrong - Debris and potentially hazardous wiring are littering the crawl space floor, which also should be covered with a vapor barrier.
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Wrong - No air barrier is present between the floor system and unconditioned space.
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Wrong - The ground of the crawlspace should be covered with a vapor barrier that extends up the sides of the crawlspace.
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Wrong - The sump pump alone cannot address the water infiltration issues in this crawlspace.
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Wrong - The vapor retarder does not completely cover the pier block and is not sealed to the post; the support strapping pinches the flex duct.
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Wrong -The top of the sump pump crock is too high above the crawlspace grade level for any water in the crawl to enter the sump.
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Wrong – A clothes dryer that vents to the crawlspace can contribute moisture to the crawlspace; this can result in damp, molding, and rotting insulation
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Wrong – A poorly sealed window and window well allow bulk water to enter the crawlspace from ground that slopes toward the structure
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Wrong – No polyethylene sheeting vapor barrier is installed on the crawlspace floor
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Wrong – The polyethylene sheeting vapor barrier is not attached to the piers with mechanical fasteners
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Wrong – The vapor barrier is not secured to the walls of this crawlspace.
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Wrong – This standard air vent has become blocked by flood debris and is located at the top of the foundation wall; it should not be used as a flood vent
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Wrong – This vented crawlspace has standing water because steps were not taken to address site conditions that led to bulk water flow into the crawlspace