Chapter 2 — ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE
Section 110.8 — MANDATORY REQUIREMENTS FOR INSULATION, ROOFING PRODUCTS AND RADIANT…
2025 California Energy Code (Title 24, Part 6) · 2025 edition · ingested 2026-07-07 · California
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(a) Insulation certification by manufacturers. All insulation shall be certified by Department of Consumer Affairs, Bureau of Household Goods and Services that the insulation conductive thermal performance is approved pursuant to the California Code of Regulations, Title 24, Part 12, Chapters 12 – 13, Article 3, “Standards for Insulating Material.” (b) Installation of urea formaldehyde foam insulation. Urea formaldehyde foam insulation may be applied or installed only if: 1. It is installed in exterior side walls; and 2. A 4-mil-thick plastic polyethylene vapor retarder or equivalent plastic…