relative to the state building code.

This bill amends the state building code to require that all new buildings and dwelling units be tested for air leakage. The law mandates that these tests measure air exchange rates and ensures the results do not exceed 5.0 air changes per hour or 0.28 cubic feet per minute per square foot. Testing must follow specific industry standards and be conducted at a pressure of 0.2 inch water gauge. This change directly impacts construction projects by setting a stricter limit on how much air can escape through the building's enclosure.