C-2 · HVAC & mechanical

Insulation and Acoustical Contractor

1205 contractors hold a California C-2 Insulation and Acoustical Contractor license

What Does a C-2 License Cover?

Installs insulating media and preformed architectural acoustical materials for temperature and sound control, including batt, blown, rigid board, spray-applied, and acoustical tile or panel systems.

Does not cover

Does not authorize removal of asbestos-containing materials.

Hiring tip

Insulation work may involve older materials that require special handling. Verify the contractor follows Cal/OSHA safety requirements and carries appropriate insurance. Ask whether the insulation type meets current California energy code standards.

A California contractor license is generally required when a project costs $1,000 or more in combined labor and materials, requires a building permit, or uses additional workers. Small jobs cannot be split from a larger project to qualify for the exemption. Read the CSLB requirements.

Also in HVAC & mechanical

C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor C-4: Boiler, Hot-Water Heating and Steam Fitting Contractor C-38: Refrigeration Contractor

Related Classifications

C-33: Painting and Decorating Contractor

Licensing Resources

Deposit and payment rules for California contracts
Home improvement contract requirements
How to verify a contractor license

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