Air

Detailed requirement

Part 1: Exterior Liquid Water Management

A point-by-point narrative describes how liquid water from outside the building is addressed; responding to the nature and intensity of wetting based on the project's site and climate, and includes the following leading concerns:

• Site drainage, including the impact of any site irrigation.
• The local water table.
• Building penetrations (especially windows and plumbing/electrical/mechanical penetrations).
• Porous building materials connected to exterior sources of liquid water.

Part 2: Interior Liquid Water Management

A point-by-point narrative describes how liquid water from interior sources is addressed, including these leading concerns:

• Plumbing leaks.
• "Hardpiped" plumbing appliances (appliances such as clothes washers exposed to building water pressure even when not in use).
• Porous building materials connected to interior sources of liquid water.
• New building materials with “builtin” high moisture content or building materials wetted during construction but now on the inside of the building.

Part 3: Condensation Management

A point-by-point narrative describes how condensation is addressed, including these leading concerns:

• High interior relative humidity levels, particularly in susceptible areas like bath and laundry rooms and belowgrade spaces.

• Air leakage which could wet either exposed interior materials or interstitially “hidden” materials.
• Cooler surfaces, such as basement or slabon-grade floors, or closets/cabinets on exterior walls.
• Oversized air conditioning units.

Part 4: Material Selection and Protection

A point-by-point narrative describes how moisture-tolerant materials have been selected and/or moisture-sensitive materials (MSP) are being protected, considering these leading concerns:

• Exposed entryways and glazing.
• Porous cladding materials.
• Finished floors in potentially damp or wet rooms such as basements, bathrooms and kitchens.
• Interior sheathing in damp or wet rooms.
• Sealing and storing of absorptive materials during construction.

See detailed requirement for Moisture management