Mich. Admin. Code R. 408.30533

Current through Vol. 24-19, November 1, 2024

Section R. 408.30533 - Frost closure

Rule 533. Section P3103.2 of the code is amended to read as follows:

P3103.2. Frost closure. To prevent frost closure, every vent extension through a roof shall be not less than 3 inches (76 mm) in diameter. Any increase in the size of the vent shall be made inside the building with a minimum of 1 foot (305 mm) below the roof or inside the wall.

2001 AACS