LEED v5 O+M Rating System_February 2026 - Page 072

Extracted Content

If smoking is not prohibited in the dwelling units and on private balconies, each unit must be compartmentalized to prevent excessive leakage between units:

• Weather-strip all exterior doors and operable windows in the residential units to minimize leakage from outdoors.

• Weather-strip all doors leading from residential units into common hallways.

• Minimize uncontrolled pathways for the transfer of smoke and other indoor air pollutants between residential units by sealing penetrations in the walls, ceilings, and floors and by sealing vertical chases (including utility chases, garbage chutes, mail drops, and elevator shafts) adjacent to the units.

• Demonstrate a maximum leakage of 0.50 cubic feet per minute per square foot (2.54 liters per second per square meter) at 50 Pa of enclosure (i.e., all surfaces enclosing the apartment, including exterior and party walls, floors, and ceilings) or establish a baseline and demonstrate a 30% improvement in leakage for each unit.

U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, November 2025 Edition 66