Complete Strategic Guide: Obtaining the RBQ 1.9 Licence – Building Mechanical Contractor

1. What Is the RBQ 1.9 Licence and Who Needs It?

The RBQ 1.9 licence — Building Mechanical Contractor (Entrepreneur en mécanique du bâtiment) — is a comprehensive licence issued by the Régie du bâtiment du Québec (RBQ) for contractors who work on the mechanical systems of buildings, equipment intended for public use, or civil engineering structures. It authorizes construction work involving:

• Heating, ventilation and air conditioning (HVAC) systems;
• Refrigeration and air conditioning equipment;
• Plumbing systems (residential and commercial);
• Fire protection systems (alarms, detectors, sprinklers);
• Insulation of ducts and pipes (calorifugeage);
• Emergency power supply systems and their control systems.

With 127 skills across 4 modules, the 1.9 is one of the most comprehensive RBQ licences — covering the full spectrum of building mechanical systems from HVAC to fire protection, plumbing, insulation, and emergency power.

2. Scope of the Licence: Building Mechanical Systems from HVAC to Fire Protection

The RBQ 1.9 covers a remarkably broad scope: all mechanical systems within a building. Unlike more specialized licences that focus on a single trade, the 1.9 encompasses heating, ventilation, refrigeration, plumbing, fire protection, insulation, emergency power, and the control systems that integrate them all. This breadth is reflected in the exam's 127 skills — the second-highest skill count among RBQ licences.

The scope extends across three chapters of the Quebec Construction Code: Chapter I (Building), Chapter III (Plumbing), and Chapter V (Electricity) — each applied specifically to building mechanical systems. A building mechanical contractor must understand how these three regulatory domains intersect: how HVAC ducts must maintain fire-resistance ratings (Chapter I), how plumbing vents interact with mechanical ventilation (Chapter III), and how emergency power circuits serve life safety systems (Chapter V).

A defining feature of the 1.9 is its emphasis on fire protection. With 16 dedicated skills in competency element CE10, fire protection represents a major block within Module 4. Candidates must master everything from flame spread ratings and fire alarm systems to sprinkler installation and fire-resistance standards for penetrations — reflecting the critical role building mechanical systems play in fire safety.

3. RBQ Exam Format: What to Expect

• Question type: Multiple choice (MCQ)
• Duration: 3 hours (180 minutes)
• Passing grade: 60%
• Languages: French or English
• Skills assessed: 127 skills across 13 competency elements
• Exam type: Mixed (8 open-book documents + 13 closed-book documents)
• Tools provided: Calculator, ruler, paper and pencil

With 127 skills and a mixed open/closed-book format involving 21 documents, the 1.9 exam is one of the most demanding RBQ exams. You have roughly 85 seconds per question, making fast navigation of the 8 provided documents essential. Module 4 (Standards and Work Execution) alone accounts for 58% of the exam.

4. Exam Documentation: Open Book vs. Closed Book

The RBQ 1.9 exam is a mixed exam with 8 documents provided (open book) and 13 to memorize (closed book) — 21 documents total. The open-book documents are the core technical codes and standards for building mechanical systems. Mastering their structure is critical given the volume of skills to cover in 3 hours.

Documents PROVIDED During the Exam (Open Book)

• Construction Code (CQLR, c. B-1.1, r. 2) Chapter I Building 1995 — The primary building code governing fire safety, structural requirements, and building systems in Quebec.
• Quebec Construction Code Chapter III Plumbing 2008 — The technical reference for all plumbing installations including sanitary systems, water heaters, and venting requirements.
• Quebec Construction Code Chapter V Electricity 2007 — Electrical requirements applicable to building mechanical systems, including emergency power and control circuits.
• Safety Code for Construction Work (CQLR, c. S-2.1, r. 4) — Health and safety standards applicable to mechanical installation work on construction sites.
• CAN/CSA F326-M91 (2005) — Residential Mechanical Ventilation — The national standard for residential ventilation systems, covering airflow requirements and heat recovery ventilators.
• National Plumbing Code of Canada 2005 (NPC) — The national reference for plumbing design and installation complementing the Quebec Chapter III.
• CSA-B52-1999 — Mechanical Refrigeration — The standard governing refrigeration system design, installation, and safety requirements.
• NFPA 13 (1999) — Installation of Sprinkler Systems — The definitive standard for automatic sprinkler system design and installation.

Documents to MEMORIZE (Closed Book)

• Building Act (CQLR, c. B-1.1) — The foundational statute governing construction, safety, and contractor qualifications in Quebec.
• Regulation respecting the professional qualifications of contractors and owner-builders (CQLR, c. B-1.1, r. 9) — Defines the qualification requirements for obtaining a licence.
• Occupational Health and Safety Act (CQLR, c. S-2.1) — The foundational statute for workplace safety in Quebec.
• Regulation respecting occupational health and safety (CQLR, c. S-2.1, r. 13) — Detailed workplace safety requirements applicable to mechanical installations.
• Master Pipe Mechanics Act (CQLR, c. M-4) — Governs the licensing and practice of master pipe mechanics in Quebec.
• Master Electricians Act (CQLR, c. M-4) — Governs the licensing and practice of master electricians, relevant to electrical components of mechanical systems.
• Pressure Vessels Act (CQLR, c. A-20.01) — The statute governing pressure vessels used in HVAC and refrigeration systems.
• Pressure Vessels Regulation (CQLR, c. A-20.01, r. 1) — Detailed technical requirements for pressure vessel design, fabrication and inspection.
• Regulation respecting certifications in the fields of gas and pressure vessels (CQLR, c. F-5, r. 2) — Certification requirements for workers handling gas and pressure vessel equipment.
• ANSI/ASHRAE-62.1-2004 — Ventilation for Acceptable Indoor Air Quality — The standard for ventilation design in commercial and institutional buildings.
• National Fire Code of Canada 2005 — The national reference for fire prevention, fire protection, and fire safety in existing buildings.
• NFPA 96 (2004) — Ventilation Control and Fire Protection of Commercial Cooking Operations — The standard for kitchen exhaust and fire suppression systems in commercial cooking facilities.
• ANSI/SMACNA 006-2006 — HVAC Duct Construction Standards – Metal and Flexible — The industry standard for sheet metal and flexible duct fabrication and installation.

5. The 4 Training and Competency Modules

Module 1 — Definitions and Types of Systems (18 skills — 14%)

Covers foundational knowledge of building mechanical systems: types of heating systems (forced air, hydronic, radiant), ventilation systems (natural, mechanical, balanced), air conditioning and refrigeration equipment, plumbing fixtures and systems, fire protection components (alarms, detectors, sprinklers), insulation materials and techniques, and emergency power supply equipment. This module establishes the vocabulary and conceptual framework for the technical modules that follow.

Module 2 — Legislative, Normative and Regulatory Framework (19 skills — 15%)

Covers the full regulatory framework for building mechanical systems: the Building Act, three chapters of the Quebec Construction Code (Building, Plumbing, Electricity), the Safety Code for Construction Work, the CAN/CSA F326-M91 standard, the National Plumbing Code, the CSA-B52-1999 standard, the NFPA 13 standard, the Master Pipe Mechanics Act, the Master Electricians Act, the Pressure Vessels Act, the OHS Act and Regulation, and the environmental standards (ASHRAE, NFPA 96, SMACNA). This module tests your ability to identify which code, standard, or regulation governs which aspect of building mechanical work.

Module 3 — Reading Plans and Specifications (16 skills — 13%)

Covers the ability to read mechanical plans and specifications: HVAC symbols, plumbing symbols, electrical symbols, dimensions, cross-sections, quantity takeoffs, and the standard specification divisions used in mechanical contracts. Candidates must interpret architectural, mechanical, and electrical drawings as they relate to building mechanical installations.

Module 4 — Standards and Work Execution (74 skills — 58%)

The most heavily weighted module on the exam — by far. With 74 skills across 7 competency elements, this module alone represents nearly six out of ten exam questions. It covers: project planning (8 skills), HVAC systems (24 skills — the single largest block), plumbing (10 skills), fire protection (16 skills), electrical supply and emergency power (9 skills), quality control (4 skills), and health and safety (3 skills). HVAC and fire protection together account for 40 skills — more than half of Module 4.

6. Key Competencies and Technical Requirements (Official Context)

HVAC Systems: 24 Skills Covering the Full Thermal Envelope

The HVAC competency element (CE8) is the single largest block in the exam with 24 skills. Candidates must master the full range of heating, ventilation, and air conditioning requirements: refrigeration and air conditioning equipment specifications, radiator and convector sizing, crawl space and attic ventilation requirements, air sealing systems for building envelopes, heating-season and non-heating-season ventilation requirements (including the CAN/CSA F326-M91 standard), depressurization protection, ventilation duct design and sizing, heat recovery ventilators (HRVs), outdoor air intake requirements, heating system air duct networks, piping systems for hydronic heating, insulation of ducts and pipes, airflow balancing procedures, and fire-resistance integrity of mechanical penetrations. Prof-RBQ.ca covers each of these 24 skills with questions tied to the specific code articles in the provided documents.

Fire Protection: 16 Skills for Life Safety Systems

Fire protection (CE10) is the second-largest block in Module 4 with 16 skills. The exam tests in-depth knowledge of flame spread rating requirements, combustible duct and conduit restrictions in small buildings, mechanical installations in fire separations, fire alarm system types (based on use, occupancy, and sprinkler presence), alarm signal audibility requirements, the critical distinction between smoke alarms and smoke detectors, installation requirements for fire detectors and smoke alarms, crawl space fire protection, detection systems for buildings undergoing transformation, fire-resistance rating standards for penetrations through fire separations, structural fire integrity, pipe and wire protection in rated assemblies, alarm system verification procedures, and sprinkler installation per NFPA 13. This competency element bridges the Construction Code Chapter I (fire safety requirements) and the NFPA 13 standard (sprinkler design).

Plumbing Systems: From Sanitary Networks to Crawl Spaces

The plumbing competency element (CE9) covers 10 skills focused on residential and commercial plumbing systems. Candidates must understand sanitary drainage systems, venting requirements, water heater installations, crawl space plumbing considerations, and compliance with both the Quebec Construction Code Chapter III and the National Plumbing Code. The exam tests the candidate's ability to cross-reference these two complementary plumbing codes — a skill unique to Quebec where both the provincial and national codes apply.

Emergency Power Supply and Control Systems

The electrical supply competency element (CE11) covers 9 skills related to emergency power and control systems in building mechanical installations. This includes emergency circuits for life safety systems, emergency lighting requirements, combustion chamber ventilation, and the control systems that integrate HVAC, plumbing, and fire protection systems. These skills bridge the Construction Code Chapter V (Electricity) with the mechanical system requirements in Chapters I and III.

Insulation (Calorifugeage): Energy Efficiency and Code Compliance

Insulation of ducts and pipes — known as calorifugeage in Quebec — is a distinctive competency within the 1.9 licence. Candidates must master insulating materials (fibreglass, mineral wool, foam), vapour barrier requirements, installation techniques for different pipe and duct configurations, and the energy efficiency standards that drive insulation requirements. This competency intersects with HVAC (preventing heat loss), plumbing (preventing pipe freezing), and fire protection (maintaining fire-resistance ratings at insulated penetrations).

LEED, Novoclimat, and Environmental Standards

The 1.9 exam includes questions on green building standards applicable to mechanical systems. Candidates must understand LEED certification requirements for HVAC energy performance, the Novoclimat program's ventilation and insulation standards, and environmental regulations governing halocarbons and CFCs in refrigeration systems. This reflects the growing importance of energy efficiency and environmental compliance in building mechanical design — a competency that distinguishes the 1.9 from older, purely code-based licences.

7. Preparation Strategy and Tips for Success

The RBQ 1.9 exam covers 127 skills across 4 modules with 8 open-book and 13 closed-book documents. Here is a recommended strategy:

Phase 1 — Master navigation of the 8 open-book documents. The three chapters of the Quebec Construction Code (Building, Plumbing, Electricity), the Safety Code for Construction Work, the CAN/CSA F326-M91 standard, the National Plumbing Code, the CSA-B52-1999 standard, and the NFPA 13 standard are all provided at the exam. With 127 skills to cover in 3 hours, fast navigation is not optional — it is the difference between finishing and running out of time.

Phase 2 — Dominate Module 4 (Standards and Work Execution). With 74 skills (58% of the exam), this module determines your result. Prioritize HVAC (CE8, 24 skills) and fire protection (CE10, 16 skills) — together they account for 40 skills. Then cover plumbing (10), electrical supply (9), planning (8), quality control (4), and OHS (3).

Phase 3 — Memorize the 13 closed-book documents by theme. Group them: contractor law (Building Act, Professional Qualifications Regulation), workplace safety (OHS Act, OHS Regulation), trade-specific acts (Master Pipe Mechanics Act, Master Electricians Act), pressure vessels (Pressure Vessels Act, Regulation, Gas Certifications Regulation), and industry standards (ASHRAE-62.1, National Fire Code, NFPA 96, SMACNA 006-2006). Use Prof-RBQ.ca's flashcards with spaced repetition.

Phase 4 — Cross-reference the three Construction Code chapters. The 1.9 is unique in requiring knowledge of three chapters simultaneously (Building, Plumbing, Electricity). Practice identifying which chapter governs which requirement — a common exam question pattern.

Phase 5 — Complete full timed simulations. With 127 skills and 8 open-book documents, you have roughly 85 seconds per question. Practice using all eight provided documents efficiently under timed conditions.

Frequently Asked Questions