California requires a state-level insulation worker license. The licensing authority is State Contractors Board. The median salary is $67,827 per year.
Last updated 2026-05-08
California requires an insulation worker to hold a state license. Apply insulating materials to pipes, ductwork, and equipment to control temperature and reduce energy loss. Licensing is administered by the State Contractors Board.
| Minimum Age | 18 years old |
| Education | Apprenticeship (4 years) or on-the-job training |
| Experience Details | Apprenticeship (4 years) or on-the-job training |
California requires passing the California Insulation Worker Certification with a minimum score of 70%. The application fee is $50.
| Exam Name | California Insulation Worker Certification |
| Passing Score | 70% |
| Code Edition | Insulation Worker Certification |
| Application Fee | $50 |
Getting licensed as an insulation worker in California takes 24 months on the typical path. Here are the steps.
The total cost includes an exam application fee of $50 and renewal fees of $50 every 2 years.
| Fee | Amount |
|---|---|
| Exam Application | $50 |
| License Renewal | $50 every 2 years |
Insulation Workers in California earn a median salary of $67,827, which is less than the national average. Data from BLS OEWS May 2024. Once licensed, insulation workers in California handle projects with real cost variation by region — see what insulation work costs in California.
| Mean (average) | — / year |
| Entry level (10th pct) | — |
| Top earners (90th pct) | — |
| Total employed | — in California |
| National average | $49,150 |
Yes — California requires a state-level insulation worker license. Apply insulating materials to pipes, ductwork, and equipment to control temperature and reduce energy loss.
The required exam is the California Insulation Worker Certification. You need a score of 70% to pass. The exam fee is $50.
The median annual salary for insulation workers in California is $67,827. The national median is $49,150.
The fastest path takes approximately 6 months. The typical path takes 24 months including experience requirements.