In Ontario’s snowy climate, clearing snow off your roof is more than just good housekeeping—it’s a vital safety task. But while removing heavy snow loads helps protect your home from leaks, ice dams, and even structural collapse, doing it improperly can be just as dangerous as ignoring it altogether.
Using the wrong tools or techniques can damage roofing materials, void warranties, or even put you and others at risk of injury. This article explores the most common snow removal mistakes Ontario homeowners make—and how to avoid them.
Why Proper Roof Snow Removal Matters
Ontario roofs are built to withstand regional snow loads, but severe winters with repeated storms can overwhelm even well-constructed homes. Removing excess snow reduces:
- Risk of roof collapse
- Ice dam formation
- Leaks and water infiltration
- Structural strain on trusses and rafters
However, if snow removal is done hastily or without knowledge of best practices, it can compromise your roof system and safety.
Common Improper Snow Removal Techniques to Avoid
1. Using Metal Shovels or Ice Picks
These tools can easily gouge shingles, tear membranes, or dent metal roofs. Even small punctures can lead to major leaks come spring.
2. Standing Directly on the Roof
Walking on a snow-covered roof increases the chance of slipping and falling. It also applies uneven weight on already-stressed areas, risking structural damage.
3. Removing All the Snow
Clearing snow down to the bare roofing surface may seem thorough, but it exposes shingles to scraping and cracking. Always leave a thin protective layer (1–2 inches).
4. Ignoring Icicles and Ice Dams
Chipping at large icicles or trying to break up ice dams with hammers can damage gutters and eavestroughs. Heat cables or professional steam systems are safer solutions.
5. Pulling Snow from Roof Valleys or Skylights Aggressively
These areas are more vulnerable to damage and leaks. Always work around roof features gently, using soft-sided tools and pulling snow down the slope—not across it.
6. Overreliance on Salt or Deicers
Some deicing products can corrode shingles, flashing, and aluminum gutters. Only use deicers that are roof-safe and applied according to manufacturer guidelines.
7. DIY Without Proper Equipment
Attempting roof snow removal without a proper roof rake (with telescoping handle and plastic blade) increases the chance of harm to yourself or your home.
Best Practices for Safe Snow Removal
- Use a roof rake from the ground level with a non-abrasive blade.
- Always work from the eaves upward, never from the ridge down.
- Clear overhangs, awnings, and lower roof sections first.
- Hire professionals for large jobs or hard-to-reach roofs.
- Consider installing snow guards and heating cables to prevent buildup in the first place.
If you’re unsure about your roof’s snow load tolerance or notice sagging, leaks, or ice dams, consult a licensed roofing professional immediately.
Legal & Insurance Considerations in Ontario
In some Ontario municipalities, homeowners can be held liable for property damage or injury resulting from falling snow or ice. Additionally:
- Insurance claims may be denied if damage is caused by improper snow removal.
- Roof warranties can be voided by scraping, shoveling, or unauthorized roof access.
That makes following proper removal protocols not just a matter of best practice—but of legal and financial importance.
Final Thoughts
Improper roof snow removal in Ontario can cause more harm than good. While snow management is essential, doing it safely and correctly protects your investment, prevents accidents, and extends the life of your roof.
When in doubt, consult a professional—especially during high-snowfall months between December and March.