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Earlier editions: 20222019

Chapter 8 — INTERIOR FINISHES

808 Acoustical Ceiling Systems — 2025 California Building Code

California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-09-25 · California

CBSC: official editions, supplements and errata

Italicized text is a California amendment to the model code, as printed in the official publication.

Cite as: 2025 California Building Code (Title 24, Part 2) § 808 · Effective January 1, 2026 · Official source: Building Standards Commission

808.1 Acoustical ceiling systems.

The quality, design, fabrication and erection of metal suspension systems for acoustical tile and lay-in panel ceilings in buildings or structures shall conform to generally accepted engineering practice, the provisions of this chapter and other applicable requirements of this code.

808.1.1 Materials and installation. Acoustical materials complying with the interior finish requirements of Section 803 shall be installed in accordance with the manufacturer’s recommendations and applicable provisions for applying interior finish.

808.1.1.1 Suspended acoustical ceilings. Suspended acoustical ceiling systems shall be installed in accordance with the provisions of ASTM C635 and ASTM C636.

808.1.1.2 Fire-resistance-rated construction. Acoustical ceiling systems that are part of fire-resistance-rated construction shall be installed in the same manner used in the assembly tested and shall comply with the provisions of Chapter 7.

8-8 2025 CALIFORNIA BUILDING CODE

CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 9 – FIRE PROTECTION AND LIFE SAFETY SYSTEMS

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting agency BSC BSC-
CG		 SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
Adopting agency BSC BSC-
CG		 SFM 1 2 1/AC AC SS SS/CC 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6
Adopt entire chapter X X X X X X X X X X
Adopt entire chapter as
amended (amended sections
listed below)		 X X X
Adopt only those sections
that are listed below		 X X X
Chapter / Section
901.5 X
903.2 X
903.2.1.2 X
903.2.1.3 X
903.2.3 X
903.2.4.1 X
903.2.5.4 X
903.2.6 X
903.2.6.1 X
903.2.6.2 X
903.2.7 X
903.2.8 X
903.2.8.2 X
Table 903.2.11.6 X
903.2.14 X
903.2.14.1 X
903.2.14.2 X
903.2.15 X
903.2.15.1 X
903.2.16 X
903.2.16.1 X
903.2.17 X
903.2.17.1 X
903.2.17.2 X
903.2.17.2.1 X
903.2.17.2.2 X
903.2.17.2.3 X
903.2.17.2.4 X
903.2.17.2.5 X
903.2.17.2.6 X
903.2.18 X
903.2.19 X
903.2.19.1 X
903.2.19.1.1 X
903.2.19.1.2 X
903.2.20 X
903.2.21 X
903.3 X
903.3.1.1 X
903.3.1.1.1 X
903.3.1.1.4 X
903.3.1.2 X
903.3.1.3 X
903.3.2 X

CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 9 – FIRE PROTECTION AND LIFE SAFETY SYSTEMS—continued

Adopting agency BSC BSC-
CG		 SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
Adopting agency BSC BSC-
CG		 SFM 1 2 1/AC AC SS SS/CC 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6
Adopt entire chapter X X X X X X X X X X
Adopt entire chapter as
amended (amended sections
listed below)		 X X X
Adopt only those sections
that are listed below		 X X X
Chapter / Section
903.3.5 X
903.10 X
904.3.1 X X
904.5 X
904.6 X
904.7 X
904.8 X
904.9 X
904.10 X
904.11.3 X
904.14 X
904.15 X
905.1 X
905.2 X
905.3 X
905.3.1 X
905.3.8 X
905.3.8.1 X
905.3.8.2 X
905.3.9 X
905.3.10 X
905.4 X
905.5 X
905.7.2 X
906.1 X
906.2 X
Table 906.3(1) X
Table 906.3(2) X
906.3.2 X
906.3.4 X
907.1.2 X
907.1.3 X
907.1.4 X
907.1.5 X
907.2 X
907.2.1 X
907.2.1.1 X
907.2.1.3 X
907.2.2 X
907.2.2.3 X
907.2.3 X
907.2.3.1 X
907.2.3.2 X
907.2.3.3 X

9-2 2025 CALIFORNIA BUILDING CODE

CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 9 – FIRE PROTECTION AND LIFE SAFETY SYSTEMS—continued

Adopting agency BSC BSC-
CG		 SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
Adopting agency BSC BSC-
CG		 SFM 1 2 1/AC AC SS SS/CC 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6
Adopt entire chapter X X X X X X X X X X
Adopt entire chapter as
amended (amended sections
listed below)		 X X X
Adopt only those sections
that are listed below		 X X X
Chapter / Section
907.2.3.4 X
907.2.3.5 X
907.2.3.6 X
907.2.3.6.1 X
907.2.3.6.2 X
907.2.3.7 X
907.2.3.8 X
907.2.3.9 X
907.2.3.9.1 X
907.2.3.9.2 X
907.2.3.10 X
907.2.5.1 X
907.2.6 X
907.2.6.1 X
907.2.6.2 X
907.2.6.2.1 X
907.2.6.2.2 X
907.2.6.3 X
907.2.6.3.3 X
907.2.6.3.4 X
907.2.6.4 X
907.2.6.5 X
907.2.9 X
907.2.9.1 X
907.2.9.3 X
907.2.9.4 X
907.2.9.4.1 X
907.2.10 X
907.2.11 X
907.2.11.1 X
907.2.11.2 X
907.2.11.2.1 – 907.2.11.2.6 X
907.2.11.3 X
907.2.11.4 X
907.2.11.6 X
907.2.11.8 X
907.2.11.9 X
907.2.12 X
907.2.13 X
907.2.13.1 X
907.2.13.1.2 X
907.2.24 with subsections X
907.2.25 with subsections X
907.2.26 with subsections X
907.2.27 X

CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 9 – FIRE PROTECTION AND LIFE SAFETY SYSTEMS—continued

Adopting agency BSC BSC-
CG		 SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
Adopting agency BSC BSC-
CG		 SFM 1 2 1/AC AC SS SS/CC 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6
Adopt entire chapter X X X X X X X X X X
Adopt entire chapter as
amended (amended sections
listed below)		 X X X
Adopt only those sections
that are listed below		 X X X
Chapter / Section
907.2.28 with subsection X
907.2.29 with subsection X
907.3 X
907.3.2 X
907.3.2.1 through 907.3.2.5 X
907.3.3 X
907.3.3.1 X
907.4.2.1 X
907.4.2.2 X X
907.4.2.7 X
907.5 X
907.5.1.1 X
907.5.2.1 X
907.5.2.1.4 X
907.5.2.2 X
907.5.2.2.4 X
907.5.2.3 X X
907.5.2.3.1 X X
907.5.2.3.2 X X
Table 907.5.2.3.2 X X
907.5.2.3.3 X X X X X
907.5.2.3.4 X X
907.5.2.4 X
907.5.2.5 X
907.6 X
907.6.1 X X
907.6.1.1 X
907.6.4 X
907.6.4.1 X
907.6.4.1.1 X
907.6.4.2 X
907.6.4.3 X
907.6.4.4 X
907.6.6 X
907.6.6.4 X
908.2 X
909.5.3 X
909.5.3.1 X
909.12.1 X
909.13.1 X
909.16 X
909.16.1 X
909.18.9 X
909.20 X

9-4 2025 CALIFORNIA BUILDING CODE

CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 9 – FIRE PROTECTION AND LIFE SAFETY SYSTEMS—continued

Adopting agency BSC BSC-
CG		 SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
Adopting agency BSC BSC-
CG		 SFM 1 2 1/AC AC SS SS/CC 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6
Adopt entire chapter X X X X X X X X X X
Adopt entire chapter as
amended (amended sections
listed below)		 X X X
Adopt only those sections
that are listed below		 X X X
Chapter / Section
909.20.1 X
909.20.2.2 X
909.20.2.3 X
909.20.2.4 X
909.20.2.5 X
909.20.3.2 X
909.20.4.1 X
909.20.4.2 X
909.20.6 X
909.20.6.1 X
909.20.6.2 X
910.2.1 X
910.3.1 X
911.1 X
911.1.6 X
911.1.8 X
912.4 X
912.6 X
913.1 X
913.5 X
915.1 X X X
915.2 X X X
915.2.1 X X X
915.2.3 X
915.4 X X X
915.4.1,
Exceptions 2 and 3		 X X X
915.4.2 X X X
915.4.3 X
915.4.4 X X X
915.5.2 X X X
915.5.3 X X X
915.6 X X X
915.6.1 X
915.7 X X

The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.

9-6 2025 CALIFORNIA BUILDING CODE

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▸Contents — California Building Code (Title 24, Part 2)
California Building Code (Title 24, Part 2)

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