Nevada Roofing and Siding Contractor (C-15) Exam - Online Exam Prep

Prepare for the Nevada Roofing and Siding Contractor (C-15) examination with online exam prep focused on roofing systems, siding installation, building-code navigation, roof substrates, steep-slope roofing, roof repairs, elastomeric systems, built-up bituminous roofing, sheet metal and flashing, construction safety, estimating, carpentry-related construction, and rooftop photovoltaic considerations.

The Nevada C-15 Roofing and Siding classification is regulated by the Nevada State Contractors Board. It covers qualifying roofing and siding work designed to make roofs and exterior walls watertight and weatherproof. Because the full C-15 classification combines roofing and siding, candidates should prepare for a broader range of trade knowledge than they would encounter on a roofing-only examination.

Effective C-15 preparation requires more than memorizing individual terms. Candidates should understand how roof assemblies, substrates, weather barriers, roofing materials, flashing, drainage, siding systems, fastening methods, repairs, safety practices, and applicable building-code requirements work together in real construction situations.

The approved exam-room reference used for this preparation is the International Building Code, 2018. Candidates should become comfortable navigating the IBC during their study process because the Nevada C-15 examination is open book with specific approved reference material.

Additional technical references used for study include the NRCA Roofing Manual: Steep Slope Roof Systems, 2025; NRCA Roofing Manual: Metal Panel and SPF Roof Systems, 2024; NRCA Roofing Manual: Membrane Roofing Systems; Code of Federal Regulations - 29 CFR Part 1926 (OSHA); Standard Practice for Installation of Rigid Poly(Vinyl Chloride) (PVC) Siding and Soffit - ASTM D 4756; Roofing Construction and Estimating by Daniel Atcheson, 1995; Carpentry and Building Construction, 2016; and NRCA Guidelines for Roof Systems with Rooftop Photovoltaic Components, 2018.

These additional references support technical preparation but are not allowed into the C-15 trade examination. Candidates should use them to strengthen roofing, siding, safety, estimating, framing, and photovoltaic-related knowledge before test day.

Online exam prep provides a structured way to divide the C-15 examination into manageable subjects. Candidates can work through roofing substrates, steep roofing, repairs, elastomeric systems, built-up roofing, siding, sheet metal, flashing, and safety separately, then use practice-oriented review to identify subjects that need additional attention.

Exam Details

The Nevada C-15 Roofing and Siding Contractor trade examination is administered through PSI for qualifying candidates pursuing the classification through the Nevada State Contractors Board.

• Exam: Nevada C-15 Roofing and Siding Contractor
• Number of Questions: 60
• Time Allowed: 2 hours
• Minimum Passing Score: 45 correct answers
• Testing Provider: PSI

The examination content is divided among the following subject areas:

• Safety: 6 questions
• Roofing - Substrate: 8 questions
• Roofing - Steep: 17 questions
• Roofing Repairs: 4 questions
• Roofing - Elastomeric: 7 questions
• Roofing - Built-Up Bituminous: 7 questions
• Siding - General Knowledge: 8 questions
• Sheet Metal and Flashing: 3 questions

Roofing - Steep is the largest individual category with 17 questions. Candidates should devote significant preparation time to asphalt shingles, tile, slate, wood shakes and shingles, underlayments, roof decks, fastening methods, valleys, ridges, penetrations, flashing, drainage, and installation procedures.

Roofing - Substrate and Siding - General Knowledge each contain eight questions. Substrate preparation should include roof decks, sheathing, deterioration, compatibility, fastening surfaces, structural conditions, and preparation before installation. Siding study should include weatherproofing, materials, fastening, joints, soffits, exterior-wall protection, and installation practices.

Roofing - Elastomeric and Roofing - Built-Up Bituminous each contain seven questions. Candidates should review low-slope roof systems, membranes, insulation, attachment methods, surfacing, flashing, drainage, maintenance, and repair principles.

Safety accounts for six questions. Roofing and siding work can involve fall hazards, ladders, scaffolds, power tools, material handling, elevated work, and other jobsite risks. Safety knowledge should be developed for recall because OSHA is not an approved exam-room reference for this examination.

Roofing Repairs includes four questions involving problems such as leaks, damaged coverings, flashing failures, substrate deterioration, drainage issues, damaged membranes, and other conditions affecting roof performance.

Sheet Metal and Flashing accounts for three questions. Although it is the smallest individual category, candidates should not skip it. Flashing is fundamental to controlling water around roof edges, penetrations, walls, valleys, curbs, and transitions.

Open Book Test

The Nevada C-15 Roofing and Siding Contractor examination is an open-book test. The approved exam-room reference used for this preparation is:

• International Building Code, 2018

Candidates should become comfortable using the International Building Code throughout preparation. Useful navigation practice includes roofing assemblies, roof coverings, weather protection, exterior-wall construction, materials, structural requirements, and other code provisions related to roofing and siding work.

An open-book examination still requires efficient time management. With 60 questions and two hours available, candidates have an average of approximately two minutes per question. Spending several minutes searching for every answer can quickly create a pacing problem.

A stronger approach is to combine direct trade knowledge with targeted code navigation. Candidates should answer familiar roofing and siding questions from knowledge and use the IBC when a specific code requirement needs to be located or confirmed.

The following study references are not allowed into the C-15 trade examination:

• NRCA Roofing Manual: Steep Slope Roof Systems, 2025
• NRCA Roofing Manual: Metal Panel and SPF Roof Systems, 2024
• NRCA Roofing Manual: Membrane Roofing Systems
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
• Standard Practice for Installation of Rigid Poly(Vinyl Chloride) (PVC) Siding and Soffit - ASTM D 4756
• Roofing Construction and Estimating, Daniel Atcheson, 1995
• Carpentry and Building Construction, 2016
• NRCA Guidelines for Roof Systems with Rooftop Photovoltaic Components, 2018

Because these references cannot be used during the trade examination, candidates should use them during preparation to develop knowledge that can be recalled without depending on the book. The NRCA manuals support detailed roofing-system preparation, ASTM D 4756 supports siding and soffit study, OSHA reinforces safety, and Roofing Construction and Estimating supports practical roofing measurements and estimating.

Carpentry and Building Construction supports preparation involving roof framing, sheathing, structural wood components, roof decks, and related construction principles. The photovoltaic roofing guidelines support preparation involving roof penetrations, flashing, drainage, access, and other conditions created by rooftop photovoltaic components.

Licensing Steps

The Nevada State Contractors Board regulates the C-15 Roofing and Siding classification. Passing the trade examination is one part of the overall contractor licensing process.

1. Confirm the C-15 classification. Determine that Roofing and Siding matches the work the contracting business intends to perform.
2. Identify the qualifying individual. Designate the person who will establish the applicable trade experience and technical qualification.
3. Document qualifying experience. Prepare records showing relevant roofing and siding work within the requested classification.
4. Prepare the contractor license application. Organize business information, qualifier information, experience documentation, and required supporting materials.
5. Submit the application to the Nevada State Contractors Board. The Board reviews qualification information before examination eligibility is established.
6. Complete applicable background requirements. Follow the required fingerprint and background procedures associated with Nevada contractor licensing.
7. Address financial responsibility. Provide the applicable financial information required as part of the contractor licensing process.
8. Receive examination eligibility. Qualified applicants can proceed with required testing after authorization.
9. Schedule the C-15 examination through PSI. Arrange the Roofing and Siding Contractor trade examination after eligibility is established.
10. Prepare for the trade examination. Study steep roofing, roof substrates, repairs, elastomeric roofing, built-up roofing, siding, safety, sheet metal, flashing, and IBC navigation.
11. Prepare for Nevada Business and Law. Nevada contractor licensing generally includes an applicable management examination requirement unless an authorized waiver applies.
12. Complete applicable examinations. Meet the required trade and management qualification requirements.
13. Complete final licensing requirements. Address applicable financial responsibility, contractor bonding, and remaining Nevada State Contractors Board requirements.

State Requirements

The Nevada C-15 Roofing and Siding classification covers qualifying work involving roofing and exterior siding systems designed to make structures watertight and weatherproof.

The roofing scope includes installation, application, alteration, and repair of qualifying watertight and weatherproof materials used on roofs. Examples include asphalt, pitch, tar, felt, shakes, shingles, aluminum, tile, slate, urethane, and other applicable roofing materials within the classification.

The siding portion includes qualifying installation, alteration, and repair of siding materials such as wood, aluminum, enameled steel, plastic, and glass used to make the exterior walls of a structure watertight and weatherproof.

The C-15 classification also encompasses qualifying insulation and waterproofing-related work within its authorized scope. Candidates should understand the breadth of the classification when deciding whether C-15 matches the services their contracting business intends to offer.

For the standard Nevada contractor licensing pathway, the qualifying individual generally must establish four years of relevant experience. The Nevada State Contractors Board reviews documented work experience as part of the qualification process.

Applicants should keep detailed records describing the type of roofing and siding work performed, responsibilities held, employers or projects involved, and the period during which the work was completed.

Nevada contractor licensing also includes management qualification. Applicable applicants generally must satisfy Nevada Business and Law requirements unless an authorized waiver applies.

Financial responsibility, contractor bonding, background procedures, and other licensing conditions are separate from the trade examination. Passing the C-15 trade examination alone does not complete the contractor licensing process.

Reference Books

• International Building Code, 2018
  This approved exam-room reference supports roofing assemblies, roof coverings, exterior construction, weather protection, materials, structural requirements, and other building-code topics relevant to the Nevada C-15 examination.
• NRCA Roofing Manual: Steep Slope Roof Systems, 2025
  This study reference supports steep-slope roofing preparation involving shingles, tile, slate, wood roofing, roof decks, underlayments, materials, installation practices, and roof-system details. This book is not allowed into the C-15 trade examination.
• NRCA Roofing Manual: Metal Panel and SPF Roof Systems, 2024
  This study reference supports metal panel roofing and spray polyurethane foam roof-system preparation. This book is not allowed into the C-15 trade examination.
• NRCA Roofing Manual: Membrane Roofing Systems
  This study reference supports membrane and low-slope roofing systems, installation methods, attachment, materials, flashing, drainage, repairs, and roof-system performance. This book is not allowed into the C-15 trade examination.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This study reference supports preparation involving fall protection, ladders, scaffolds, personal protective equipment, tools, material handling, and other construction-safety topics. This book is not allowed into the C-15 trade examination.
• Standard Practice for Installation of Rigid Poly(Vinyl Chloride) (PVC) Siding and Soffit - ASTM D 4756
  This study reference supports PVC siding and soffit installation practices, fastening, alignment, joints, and exterior weather-protection concepts. This reference is not allowed into the C-15 trade examination.
• Roofing Construction and Estimating, Daniel Atcheson, 1995
  This study reference supports roofing construction methods, measurements, materials, quantities, estimating, and practical roofing knowledge. This book is not allowed into the C-15 trade examination.
• Carpentry and Building Construction, 2016
  This study reference supports roof framing, sheathing, roof decks, structural wood components, exterior construction, and related carpentry knowledge. This book is not allowed into the C-15 trade examination.
• NRCA Guidelines for Roof Systems with Rooftop Photovoltaic Components, 2018
  This study reference supports roofing considerations involving rooftop photovoltaic components, penetrations, flashing, drainage, maintenance access, and overall roof-system performance. This book is not allowed into the C-15 trade examination.

Test Information and Study Materials

A productive Nevada C-15 study plan should reflect the examination weighting. Steep roofing is the largest category, but candidates should maintain balanced preparation across substrates, siding, elastomeric roofing, built-up roofing, safety, repairs, sheet metal, and flashing.

Prioritize steep-slope roofing. Review shingles, tile, slate, wood shakes and shingles, underlayments, roof decks, fastening methods, valleys, ridges, penetrations, drainage, and flashing.

Study roofing substrates. Understand deck types, sheathing, substrate deterioration, surface preparation, structural conditions, fastening surfaces, and compatibility with roof coverings.

Develop siding knowledge. Review siding materials, installation practices, weatherproofing, fastening, expansion and movement, soffits, joints, exterior-wall conditions, and PVC siding concepts.

Review low-slope systems. Study built-up bituminous roofing, elastomeric roofing, membrane systems, insulation, attachment, flashing, drainage, surfacing, and common repair methods.

Study repairs as a separate skill. Practice identifying causes of leaks, flashing failures, damaged roof coverings, deteriorated substrates, membrane defects, and drainage problems.

Prepare safety for recall. Since OSHA is not allowed into the trade examination, candidates should become comfortable with fall protection, ladders, scaffolds, PPE, material handling, tools, and jobsite safety concepts before testing.

Practice IBC navigation. Use the International Building Code during study sessions and practice finding roofing, exterior-wall, structural, and weather-protection requirements quickly.

Review estimating and construction fundamentals. Use Roofing Construction and Estimating and Carpentry and Building Construction to reinforce measurements, quantities, roof framing, sheathing, decks, and practical construction relationships.

Study rooftop photovoltaic considerations. Review how photovoltaic components can affect penetrations, flashing, drainage, maintenance access, and overall roof performance.

Use timed practice. With 60 questions in two hours, candidates should develop a steady pace and practice making quick decisions about when a code lookup is necessary.

Track weak subjects. If practice consistently reveals difficulty with siding, steep roofing, low-slope systems, substrates, safety, or flashing, direct additional study toward that category instead of simply repeating material that is already familiar.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Nevada C-15 Roofing and Siding Contractor candidates through organized study guidance, roofing and siding trade-focused review, practice-oriented preparation, building-code navigation, reference-based study, and confidence-building exam structure.

The online format helps break a broad trade examination into manageable study areas. Candidates can focus separately on steep roofing, substrates, siding, repairs, elastomeric systems, built-up roofing, safety, sheet metal, and flashing instead of trying to absorb every topic at once.

Trade-focused review helps connect technical information with practical roofing and siding work. Understanding why a particular roof detail, flashing method, substrate condition, or siding installation principle matters can provide a stronger foundation than memorizing isolated answers.

Practice-oriented preparation helps identify weak areas. Missed questions can reveal whether additional preparation is needed in steep roofing, siding, membranes, repairs, substrates, safety, or building-code navigation.

Reference-navigation preparation focuses on the International Building Code because it is the approved exam-room reference used for this preparation. Repeated navigation can help candidates become more familiar with roofing and exterior-building provisions and more efficient during a timed exam.

The study-only references broaden preparation beyond the exam-room code book. The NRCA manuals support multiple roofing systems, ASTM D 4756 supports siding preparation, OSHA reinforces construction safety, Roofing Construction and Estimating supports practical measurements and estimating, and Carpentry and Building Construction reinforces framing and roof-deck knowledge.

The photovoltaic roofing guidelines add preparation for roof-system conditions involving solar equipment. Candidates can review penetrations, flashing, drainage, maintenance access, and other roofing concerns that can arise when photovoltaic components are installed on a roof.

Online study also gives candidates the flexibility to revisit challenging subjects. Someone with extensive steep-slope roofing experience may need more work with siding or elastomeric systems, while another candidate may need additional practice with code navigation, safety, estimating, or roof repairs.

By combining structured online study, trade-focused roofing and siding review, reference navigation, practice-oriented preparation, and targeted work across the C-15 content areas, 1 Exam Prep provides a focused way to prepare for the Nevada Roofing and Siding Contractor examination.

Frequently Asked Questions

Is the Nevada C-15 Roofing and Siding exam open book?

Yes. The Nevada C-15 Roofing and Siding Contractor examination is an open-book test with specific approved reference material.

Which book is allowed into the Nevada C-15 examination?

The approved exam-room reference used for this preparation is the International Building Code, 2018.

Which books are not allowed into the C-15 trade exam?

The NRCA roofing manuals, OSHA, ASTM D 4756, Roofing Construction and Estimating, Carpentry and Building Construction, and the NRCA rooftop photovoltaic guidelines listed for this preparation are not allowed into the C-15 trade examination.

How many questions are on the Nevada C-15 exam?

The Nevada C-15 Roofing and Siding Contractor examination contains 60 questions.

How much time is allowed for the examination?

Candidates have two hours to complete the C-15 trade examination.

What score is required to pass the Nevada C-15 exam?

The current examination requires a minimum of 45 correct answers out of 60 questions.

What is the largest subject on the C-15 exam?

Roofing - Steep is the largest individual category with 17 questions.

Does the Nevada C-15 exam include siding?

Yes. Siding - General Knowledge is a dedicated examination category, so candidates should prepare for both roofing and siding work.

Does the C-15 examination include safety?

Yes. Safety accounts for six questions. OSHA should be used during preparation even though it is not allowed into the trade examination.

Does the exam cover roof repairs?

Yes. Roofing Repairs is a dedicated content area and should be included in the study plan.

Should I study built-up and elastomeric roofing?

Yes. Both Built-Up Bituminous Roofing and Elastomeric Roofing are substantial examination categories.

Why should I practice with the International Building Code?

The International Building Code, 2018 is the approved exam-room reference used for this preparation. Repeated navigation practice can help candidates locate roofing and exterior-building requirements more efficiently during the timed examination.

How should I use the books that are not allowed into the exam?

Use them during preparation to build technical knowledge and recall. The goal is to understand the roofing, siding, safety, estimating, construction, and photovoltaic concepts well enough to apply them without depending on those references during testing.

What work does the Nevada C-15 classification cover?

The classification covers qualifying roofing and siding work involving watertight and weatherproof materials and exterior systems within the scope established for Nevada C-15 contractors.

How does online exam prep help with the Nevada C-15 exam?

Online preparation helps candidates organize the broad C-15 scope into manageable subjects, strengthen trade knowledge, practice code navigation, identify weak areas, and build familiarity with the timing and structure of the examination.