California CSLB C-2 — Insulation & Acoustical Exam Prep

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Business & Law is 75% off with this classification. Add it only if you want it, for the same term: $24.75 for 30 days, $32.25 for 60 days, $42.25 for 90 days.

Official sitting

California CSLB C-2 Insulation & Acoustical exam at a glance

The California CSLB C-2 Insulation & Acoustical exam has a time limit of 3 hours 30 minutes, and it is closed book. CSLB also requires a separate Law and Business exam. Figures are from CSLB’s published exam information.

Time3 hours 30 minutes

Confirm question count, time, open-book rules, and passing score on the live board bulletin before you sit. We do not guarantee a passing result. Source: CSLB C-2 Examination Study Guide. How we source exam facts

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What’s included

14,000+ word study guide

Worked calculations, code-section breakdowns, exam traps, a key-terms glossary and a 30/60/90-day plan.

5 full-length practice exams

Original questions weighted to match the topic mix of the real exam.

500 practice questions

Every one with a written explanation and the code section behind the answer.

Same study guide and four exams on every term. You are choosing how long you can log in.

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What’s on the California CSLB C-2 Insulation & Acoustical exam

CSLB’s study guide divides the C-2 exam into four weighted sections. Planning and Estimating carries the most weight at 29%, and together with Insulation (28%) it makes up 57% of the exam. Acoustical is the smallest share at 16%.

California CSLB C-2 Insulation & Acoustical exam sections and their share of the exam
SectionShare of exam
Planning and Estimating29%
Acoustical16%
Insulation28%
Safety27%

The C-2 exam is closed book: no reference materials may be used during the test. Questions are multiple choice with four options, and there is no penalty for guessing, so leave nothing blank.

Source: CSLB Insulation and Acoustical (C-2) examination study guide. These weightings are the Board’s own, not our estimate. Contractor Pathway is independent and not affiliated with or endorsed by CSLB.

What this prep covers

  1. 3 Insulation Material Standards Referenced in the CBC
  2. 4 Fire Performance of Insulation Materials
  3. 4 Contract Types
  4. 7 Business Practices Specific to C-2 Contractors
  5. 6 Estimating Material Quantities
  6. 1 Scope of the C-2 License
  7. 6 Compliance Documentation (CF Forms)
  8. 2 Three-Day Right to Cancel
  9. 3 Change Orders
  10. 2 Stop Payment Notice
  11. 4 Permits and Inspections
  12. 5 Subcontracting Rules
  13. 7a CSLB Complaint and Arbitration
  14. 3a Prescriptive R-Value Requirements — Residential
  15. 4a Nonresidential Prescriptive Requirements
  16. 1 CBC Sound Transmission (Section 1206)
  17. 4 Acoustical Design Principles
  18. 4 PPE by Task
  19. 6 Asbestos Awareness
  20. 1 Acoustical Ceiling Systems
  21. 2 Wall Installation
  22. 2 STC Rating Examples
  23. 3 IIC Rating Examples
  24. 5 CBC Section 1207 — Sound Transmission in Multi-Family Construction
  25. 5a NRC (Noise Reduction Coefficient) — Detailed
  26. 5b Flanking Paths
  27. 2 Soundproofing Techniques
  28. 3 Fire-Rated and Sound-Rated Assemblies
  29. 4a ASTM E84 — Standard Test Method for Surface Burning Characteristics
  30. 5 Duct Insulation Requirements
  31. 7 Quality Insulation Installation (QII)
  32. 2 Blown-In Fiberglass
  33. 3 Blown-In Cellulose
  34. 5 Rigid Board Insulation
  35. 7 Insulation Comparison
  36. 1 Attic Installation
  37. 3 Crawl Space Insulation
  38. 4 Pipe and Duct Insulation
  39. 4b Weatherization and Air Sealing Techniques
  40. 5 Vapor Retarders
  41. 1 Overview
  42. 2 California Climate Zones
  43. 3 Understanding R-Value Calculations
  44. 4 R-Value and U-Factor
  45. 8 Air Sealing and Air Barriers
  46. 5 — Batt Width for 16-Inch OC Framing
  47. 1 - Envelope Air Leakage (ASHRAE 90.1)
  48. 1 Fiberglass Batt and Blanket
  49. 4 Spray Polyurethane Foam (SPF)
  50. 6 Mineral Wool
  51. 4 Radiant Barriers
  52. 5 Retrofit Considerations
  53. 1 Injury and Illness Prevention Program (IIPP)
  54. 2 Hazard Communication (HazCom) — Title 8, CCR Section 5194
  55. 3 Recordkeeping
  56. 1 Respiratory Protection Program (Title 8, CCR Section 5144)
  57. 2 Respirator Selection
  58. 3 Permissible Exposure Limits (PELs)
  59. 1 Height Thresholds
  60. 2 Fall Protection Systems
  61. 3 Ladder Safety
  62. 4 Scaffold Safety
  63. 1 Heat Illness Prevention (Title 8, CCR Section 3395)
  64. 2 Confined Space Entry (Title 8, CCR Sections 5156-5158)
  65. 3 Fire Safety During Spray Foam Application
  66. 5 Electrical Safety and LOTO
  67. 7 Silica Exposure
  68. 2 CBC Fire and Smoke Protection (Chapter 7)
  69. 6 Firestopping
  70. 1 License Requirements for C-2
  71. 2 Contractor's Bond
  72. 3 Workers' Compensation Insurance
  73. 4 License Renewal
  74. 1 Home Improvement Contracts (B&P Code Section 7159)
  75. 1 Mechanics Lien Law (Civil Code Sections 8000-9566)
  76. 3 Advertising Requirements
  77. 6 Grounds for Disciplinary Action

Related California CSLB exams

Common questions about this exam

Do I also need the Law and Business exam in California?

Yes. CSLB requires every applicant to pass the separate Law and Business exam in addition to the C-2 trade exam. That exam has 3 hours 30 minutes. California CSLB Law & Business prep is 75% off when you add it to this classification for the same term.

How much practice does this prep include?

It includes 5 full-length practice exams and 500 practice questions in total. Every question has a written explanation naming the code section the answer comes from.

How long is the study guide?

The California CSLB C-2 Insulation & Acoustical guide runs to roughly 14,396 words in 77 sections, starting with “3 Insulation Material Standards Referenced in the CBC” and ending with “6 Grounds for Disciplinary Action”.

How long do I get access?

Choose 30, 60 or 90 days at checkout. Your days do not start at checkout: they begin the first time you open the course (or 14 days after purchase, whichever comes first). Access works on any device, and you can retake every practice exam as often as you like. Days remaining are shown in your dashboard and you can extend at any time.

Is this an official California CSLB C-2 Insulation & Acoustical exam?

No. This is independent preparation material. It is not affiliated with or endorsed by any state licensing board or exam vendor, and it does not contain real exam questions. Always confirm current requirements with your licensing board.

About this prep

This prep is built specifically for the C-2 — Insulation & Acoustical examination and includes a 14,000+-word study guide written for this exam, 5 full-length practice exams and 500 practice questions, each with a written explanation.

How access works

You are paying for access length (30, 60, or 90 days). The study guide and four timed exams are the same on every term. Your days start the first time you open the course, not at checkout (or 14 days after purchase, whichever comes first), and access works on any device for that term.

Not affiliated with or endorsed by any state licensing board or exam vendor. For exam-preparation purposes only.