(2) Door change-out (same size & type) for residential buildings. Dual glazing, labeled and certified by National Fenestration Rating Council (NFRC), is required for doors and windows replaced in all residential buildings, three stories or less, per Section 150.2(b) 1B of Title 24. Dry rot repair less than 10% of replacement cost of residential buildings. Re-roof with Class A or B material weighing less than 6 pounds per sq. ft. over existing solid sheathing _(2)_Squares. Class A roof covering