Prescriptive Compliance: 1. Increased flexibility for envelope compliance (§ 150.1(c)). 2. Increased roof assembly requirements to include insulation installed either above or below roof deck (§ 150.1(c)1A). 3. Requirements for water-heating systems in single-family and multifamily buildings have been updated and more options have been added (§ 150.1(c)8). 4. High-performance attics and ducts in conditioned …
