Safety checklist — Waterproofing
Installation of membranes and waterproofing products. Based on Québec's Construction Safety Code (CSTC) and CNESST standards.
Before work
11 items- ✓
PPE worn: chemical-resistant gloves, respirator if required
- ✓
Substrate clean, dry and conforming — surface prep complete
- ✓
Safety Data Sheets (SDS) for products reviewed
- ✓
Favorable weather: no rain, temp within manufacturer's range
- ✓
Fall protection in place if working on roof
- ✓
Fire extinguisher at hand if open flame (torch)
- ✓
Application per manufacturer's specifications
- ✓
Overlaps and dimensional flashings per spec
- ✓
If a confined space: CSTC 3.21 rules (not RSST section XXVI)
ℹ️ On a construction site, confined space is 3.21. RSST XXVI applies to establishments.
- ✓
Singular points treated: corners, expansion joints, penetrations
- ✓
Propane cylinders upright and away from flame
After work
4 items- ✓
Waterproofing test performed (flood test or smoke test)
- ✓
Mechanical protection installed over membrane
- ✓
Equipment cleaned, products stored per SDS
- ✓
Fire watch rounds completed (min. 1 hr after hot work)
15 verification items — use this checklist on-site with the app
Use on-site — freePDF reports, history and team management in the app
For information only — this is not legal advice. OK Sécurité is an independent company with no affiliation to the CNESST: we are not mandated, endorsed or certified by it. Completing a checklist here does not by itself establish your compliance — your exact obligations depend on your job site and your prevention program. Where there is any discrepancy, the official text published by Légis Québec or the CNESST prevails.
More checklists — Building Envelope & Roofing
More safety checklists
Risks and prevention — Waterproofing
Waterproofing often involves applying solvent-based products or hot bitumen, exposing workers to harmful vapours. RSST sets exposure limits for VOCs and bitumen fumes. Ventilation and respiratory protection are essential in poorly ventilated areas.
Working on sloped or wet surfaces significantly increases slip and fall risk. Anchor systems must be suited to the roof type and slope. Collective measures (nets, guardrails) take priority over personal equipment.
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