Bathroom renovations are the leading cause of home water damage claims in Ontario in 2026 — averaging $4,500–$25,000 per claim. Proper renovation reduces risk dramatically; cheap renovations increase risk and can void coverage.
What to Disclose
Major renovations (cabinetry, plumbing relocation, fixture replacement) should be disclosed to insurer. Documented professional installation often improves underwriting; can reduce premiums 2–5%.
Common Bathroom-Related Claims
- Sudden plumbing failure: covered.
- Slow leak under vanity: NOT covered (gradual).
- Toilet overflow: covered if sudden.
- Shower waterproofing failure (rot in walls): NOT covered (gradual).
- DIY install gone wrong: typically NOT covered.
Upgrades That Reduce Risk
- PEX plumbing replacing galvanized.
- Schluter Kerdi waterproofing (vs paint-on only).
- Anti-scald thermostatic valves.
- Battery-powered leak sensors under vanity ($25–$60).
- Quarter-turn shutoff valves on supply lines.
Frequently Asked Questions
Does my home insurance cover bathroom renovation problems?
Sudden + accidental damage covered. Gradual issues (slow leaks, waterproofing failure) NOT covered. DIY install damage usually not covered.
Should I tell my insurer about a bathroom renovation?
Yes for major renovations. Can reduce premiums 2–5% via documented professional install.
What features reduce bathroom-related insurance risk?
Schluter waterproofing, PEX plumbing, anti-scald valves, leak sensors, quarter-turn shutoffs. Combined: ~80% risk reduction.
Are bathroom-related water damage claims common in KW?
Most common home insurance claim in Ontario. Average $4,500–$25,000 in remediation. Proper renovation prevents most.
Does D&D provide insurance documentation?
Yes — printed install report, photos, manufacturer warranties, permits, invoice. Designed for insurance file documentation.
Key Takeaways
- Bathroom water damage averages $4,500–$25,000 per Ontario claim.
- Sudden + accidental damage covered; gradual NOT covered.
- Disclose major renovations — can reduce premiums 2–5%.
- Schluter waterproofing + PEX + leak sensors = 80% risk reduction.
- DIY install damage usually NOT covered.
- Keep all renovation documentation for insurance file.
- D&D provides full insurance documentation package.
Devon has personally overseen 500+ interior renovations across Kitchener, Waterloo, Cambridge, and Guelph since 2023. Read full bio →