Education: Other trades certificate or diploma. Tasks: Install built-up roofing systems using materials such as asphalt saturated felts and hot asphalt and gravel. Install single-ply roofing system using waterproof sheet materials, such as modified plastics, elastomeric or other asphaltic compositions. Repair or replace single-ply roofing systems. Repair roofing systems. Supervise other workers. Apply waterproof coatings to concrete or other masonry surfaces below or above ground level. Supervision: 3-4 people. Roofers. Certificates, licences, memberships, and courses : Roofer Trade Certification. Roofer Red Seal Certificate. Fall Arrest Protection Training Course. Area of specialization: Conventional and inverted built-up system. Modified roofing system. Single ply sheet membrane roofing system. Screening questions: Do you have experience working in this field?. Do you have the required certifications listed in the job posting?. Employment terms options: Early morning. Experience: 1 year to less than 2 years. Employment terms options: Flexible hours. To be determined. Day. Weekend. Overtime available.