Applicable Building Type(s)
Policy Requirement Level
Development Authority: International Code Commission, ASHRAE and Kentucky Board of Housing, Buildings and Construction
Implementation Authority: Local authorities
Verification Authority: Code official
Prescriptive Compliance path
Occupiable space, excluding crawl spaces and garages
|Climate zone 1||0.322||0.063||0.58||1.2|
|Climate zone 2||0.107||0.048||0.151||0.75|
|Climate zone 3A and 3B||0.107||0.048||0.123||0.65|
|Climate zone 4A and 4B||0.087||0.048||0.104||0.4|
|Climate zone 4C||0.074||0.048||0.09||0.35|
|Climate zone 5||0.074||0.048||0.09||0.35|
|Climate zone 6||0.064||0.048||0.06||0.35|
|Climate zone 7||0.064||0.039||0.071||0.35|
|Climate zone 8||0.057||0.039||0.071||0.35
For curtain walls and storefront glazing maximum leakage rate is 5.5 m3/(hxm2) at 75 Pa for fenestration area.
Commercial-glazed swinging entrance doors and revolving doors maximum leakage rate is 5.5 m3/(hxm2) at 75 Pa for door area.
Openings and penetrations of the envelope should be sealed with caulking materials or gasketing systems. Joints should also be sealed
Cargo doors and loading docks must have weather-seals.
Outdoor air intakes and exhaust openings must have a Class 1 motorized, leakage-rated damper.
Vestibules should be designed so interior and exterior doors do not need to be open at the same time for passing through.
Recessed lighting installed in the building's envelope has a maximum leakage of 0.944 L/s at 75Pa