06/03/2026
𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐲 𝐔𝐩𝐝𝐚𝐭𝐞
Phoenix is now operating under the 2024 Residential Code, continuing the industry’s shift toward Appendix U-compliant open-cell spray foam systems in qualifying unvented attic applications.
As adoption of the 2024 IRC continues expanding across the country, contractors pursuing a streamlined, cost-effective approach to insulating qualifying unvented attics without a prescriptive ignition barrier must utilize Appendix U-passing open-cell spray foam systems.
PolyCon is proud to help lead that transition with tested, code-recognized solutions built for the next generation of spray foam applications.