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The light fixture is connected to the exhaust fan with an electric wire which is sometimes hard wired but in this case is plugged in so it can be unplugged to clean the light fixture and access the fan for cleaning

The light fixture is connected to the exhaust fan with an electric wire which is sometimes hard wired but in this case is plugged in so it can be unplugged to clean the light fixture and access the fan for cleaning
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The mechanical curb for a skylight is integrated with the water management and air control layers on a flat roof retrofitted to include new above-deck rigid foam insulation

The mechanical curb for a skylight is integrated with the water management and air control layers on a flat roof retrofitted to include new above-deck rigid foam insulation
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The metal flashing used at this wall-to-roof transition is incorrectly layered over, not under, the siding, and is nailed into the siding, creating holes where water can infiltrate the wall.

The metal flashing used at this wall-to-roof transition is incorrectly layered over, not under, the siding, and is nailed into the siding, creating holes where water can infiltrate the wall
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The metal screening keeps insects out of the black mesh plastic fabric which provides a ventilation gap behind the home’s siding, which includes the ship-lapped cypress shown here.

The metal screening keeps insects out of the black mesh plastic fabric which provides a ventilation gap behind the home’s siding, which includes the ship-lapped cypress shown here.
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The minimum required plumbing connections and trim for fire sprinkler connection to municipal water with a standalone wet sprinkler system.

The minimum required plumbing connections and trim for fire sprinkler connection to municipal water with a standalone wet sprinkler system.
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The mistake of not staggering siding and foam sheathing joints

The mistake of not staggering siding and foam sheathing joints
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The mistake of overdriven fasteners

The mistake of overdriven fasteners
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The mistake of reverse shingling

The mistake of reverse shingling
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The moisture level of the cellulose wall insulation is tested with a moisture meter to verify that the insulation is sufficiently dry before installing drywall.

The moisture level of the cellulose wall insulation is tested with a moisture meter to verify that the insulation is sufficiently dry before installing drywall.
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The moisture level of the wall studs is tested with a moisture meter to verify that the wood is sufficiently dry before installing drywall.

The moisture level of the wall studs is tested with a moisture meter to verify that the wood is sufficiently dry before installing drywall.
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The nut holding the light housing in place in this combination exhaust fan/light can be unscrewed by hand

The nut holding the light housing in place in this combination exhaust fan/light can be unscrewed by hand
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The pier foundation that lifts this home above flood waters is visible in this photo taken before the skirt walls were added.

The pier foundation that lifts this home above flood waters is visible in this photo taken before the skirt walls were added.
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The pipe connections for faucets, dishwashers, garbage disposals, and other water using appliances can be a source of leaks.

The pipe connections for faucets, dishwashers, garbage disposals, and other water using appliances can be a source of leaks.
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The preferred method for fire sprinkler connection to municipal water with a standalone, wet sprinkler system.

The preferred method for fire sprinkler connection to municipal water with a standalone, wet sprinkler system.
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The recommended approach for groundwater management in cases where the foundation is entirely above the groundwater table.

The recommended approach for groundwater management in cases where the foundation is entirely above the groundwater table.
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The red piece in this detail is through-the-wall metal flashing; it is installed on the sheathing just above the capstone, with house wrap installed to lap down over it.

The red piece in this detail is through-the-wall metal flashing; it is installed on the sheathing just above the capstone, with house wrap installed to lap down over it.
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The retrofitted flat roof has PV panels and walking mats installed over the roofing membrane

The retrofitted flat roof has PV panels and walking mats installed over the roofing membrane
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The seams of the rigid insulation are not taped and it will not provide a complete capillary break

The seams of the rigid insulation are not taped and it will not provide a complete capillary break
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The sheathing has rotted because there was not a sufficient drainage gap behind the stucco cladding

The sheathing has rotted because there was not a sufficient drainage gap behind the stucco cladding
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The shower diverter in bath/shower combinations is one of the common sources of leaks in tub faucets.

The shower diverter in bath/shower combinations is one of the common sources of leaks in tub faucets.
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The steel drip edge flashing is easy to see above the fascia and just below the roofing along all of the roof edges of this home.

The steel drip edge flashing is easy to see above the fascia and just below the roofing along all of the roof edges of this home.
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The tape window flashing here is integrated with the roller-applied weather-resistant barrier.

The tape window flashing here is integrated with the roller-applied weather-resistant barrier.
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The top course of these concrete masonry unit (CMU) crawlspace foundation walls and piers is filled with grout then sprayed with a waterproofing membrane that acts as a capillary break and prevents moisture from migrating into the framing material.

The top course of these concrete masonry unit (CMU) crawlspace foundation walls and piers is filled with grout then sprayed with a waterproofing membrane that acts as a capillary break and prevents moisture from migrating into the framing material.
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The ventilation space in this vented over-roof keeps the roof cool to prevent ice dams over the unvented attic

The ventilation space in this vented over-roof keeps the roof cool to prevent ice dams over the unvented attic