2024 Ontario Building Code Standards for Roofing and Cladding | empcontracting.ca Inc.
Sarah's Expert Insight
OBC Compliance Specialist
"As a senior consultant at empcontracting.ca Inc., your construction contractor in London, Ontario, I find that strict adherence to Section 9.27 is the most effective way to combat Ontario's harsh freeze-thaw cycles. Whether we are managing a high-end cladding project in Oakville or a durable roofing installation in Muskoka, ensuring proper drainage and material compliance prevents the moisture ingress that frequently leads to structural rot in Southwestern Ontario."
Introduction to OBC Roofing and Cladding Requirements
Ensuring your building envelope meets the 2024 Ontario Building Code (OBC) is essential for durability and safety. At empcontracting.ca Inc. your construction contractor in London, Ontario, we prioritize compliance with these technical standards to ensure long-lasting results for every project.
9.26.16. Polyvinyl Chloride (PVC) Sheet Roofing
Per Section 9.26.16.1, any polyvinyl chloride sheet applied roofing membrane must be installed according to the CGSB 37-GP-55M standard. This ensures the flexible membrane provides a waterproof seal suitable for flat roof applications.
9.26.17. Concrete Roof Tiles
Concrete roof tiles (9.26.17.1) require installation following the CAN/CSA-A220 Series. Proper installation of these heavy-duty tiles is vital for structural load management and moisture shedding.
9.26.18. Roof Drains and Downspouts
To prevent water damage and soil erosion, Section 9.26.18 mandates that:
- Roof drains must conform to Part 7 (Plumbing).
- Downspouts not connected to a sewer must include extensions to carry rainwater away from the building foundation, preventing localized soil erosion.
9.27.1. General Cladding Application
Section 9.27.1.1 outlines the requirements for cladding materials like wood, vinyl, aluminum, steel, and stucco. Whether installed on wood-frame walls or insulating concrete form (ICF) walls, these assemblies must comply with specific subsections or Part 5 of the OBC to ensure they are adequately protected against precipitation.
Disclaimer: This content is generated from the Ontario Building Code for educational purposes. Always consult with a licensed professional engineer or your local building department before starting any construction project in London, Ontario.