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When condensation forms on the interior side of wall sheathing and is not able to dry out, it can lead to mold growth and rotting of wall sheathing and framing

When condensation forms on the interior side of wall sheathing and is not able to dry out, it can lead to mold growth and rotting of wall sheathing and framing
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When correctly installed, drip edge flashing directs rainwater into the gutter.

When correctly installed, drip edge flashing directs rainwater into the gutter.
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When siting a cistern provide adequate access for vehicles.

When siting a cistern provide adequate access for vehicles.
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When the water heater is mostly drained, tip the water heater so that the remaining water in the tank slopes towards the drain valve; a scrap piece of wood can help to hold it at an angle.

When the water heater is mostly drained, tip the water heater so that the remaining water in the tank slopes towards the drain valve; a scrap piece of wood can help to hold it at an angle.
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Wind Zones in the U.S.

Wind Zones in the U.S.
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Window and door openings fully flashed

Window and door openings fully flashed
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Window flashing is overlapped to provide a continuous drainage plane.

Window flashing is overlapped to provide a continuous drainage plane.
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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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With fiber cement siding, face nail rather than blind nail where the design wind speed is ≥100 mph.

With fiber cement siding, face nail rather than blind nail where the design wind speed is ≥100 mph.
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With fiber cement siding, place blind nails 3/4 to 1 inch from top edge and > 3/8 inch in from butt ends.

With fiber cement siding, place blind nails 3/4 to 1 inch from top edge and > 3/8 inch in from butt ends.
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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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Wood siding installation details for tongue-and-groove horizontal siding.

Wood siding installation details for tongue-and-groove horizontal siding.
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Wood siding installation details to improve resistance to wind-driven rain at corners.

Wood siding installation details to improve resistance to wind-driven rain at corners.
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Wood/fiber cement drainable wall assembly

Wood/fiber cement drainable wall assembly
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Wrong - House wrap was poorly installed, seams were not taped, and flashing tape was not installed around windows.

Wrong - House wrap was poorly installed, seams were not taped, and flashing tape was not installed around windows.
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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.

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 - Class I vapor retarder over framed basement walls can cause condensation, mold, and rotting because plastic prevents drying to the inside; the outside should have waterproofing and vertical drainage, and the framing should be spaced from the wall.

Wrong - Class I vapor retarder over framed basement walls can cause condensation, mold, and rotting because plastic prevents drying to the inside; the outside should have waterproofing and vertical drainage, and the framing should be spaced from the wall.
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Wrong - Down spout is detached from gutter and cannot carry bulk water away from building.

Wrong - Down spout is detached from gutter and cannot carry bulk water away from building.
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Wrong - Exterior drain pipe is exposed and thus subject to being crushed; also it has been allowed to fill with dirt and may be clogged, preventing perimeter drain pipe or downspouts from draining.

Wrong - Exterior drain pipe is exposed and thus subject to being crushed; also it has been allowed to fill with dirt and may be clogged, preventing perimeter drain pipe or downspouts from draining.
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Wrong - Gutters should be regularly cleaned or covered with screening to prevent accumulation of leaves, seeds, and woody debris, which can provide fuel for forest fires or nesting materials for animals.

Wrong - Gutters should be regularly cleaned or covered with screening to prevent accumulation of leaves, seeds, and woody debris, which can provide fuel for forest fires or nesting materials for animals.
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Wrong - House wrap and flashing tape are poorly installed allowing water to get into the gaps behind flashing tape.

Wrong - House wrap and flashing tape are poorly installed allowing water to get into the gaps behind flashing tape.
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Wrong - House wrap should be installed bottom to top, so that upper layers overlap the lower layers encouraging water to shed out instead of behind the house wrap.

Wrong - House wrap should be installed bottom to top, so that upper layers overlap the lower layers encouraging water to shed out instead of behind the house wrap.
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Wrong - House wrap tape is not fully adhered at seam and flashing tape is missing from window head, jamb, and corner above window.

Wrong - House wrap tape is not fully adhered at seam and flashing tape is missing from window head, jamb, and corner above window.
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Wrong - Lack of a weather-resistant barrier allowed water to get behind the siding and rot the framing in this corner rim joist area.

Wrong - Lack of a weather-resistant barrier allowed water to get behind the siding and rot the framing in this corner rim joist area.