Interpretation #9093
Published August 13, 2025
Original Request
- Code Version
- 2023
- Code
- ENERGY
- Code Description
- Chapter
- 5
- Section
- R503.1.2
- Topic
- R value of Duct work
Question
Is the minimum standard when replacing duct work in the attic R8?
Answer Published 08/06/2025 at 10:48 AM
Yes, if this is a non conditioned attic.
Commentary
None.