Storm-Proofing Your Calgary Commercial Roof Before Hail Season

Each year, Calgary faces intense hailstorms that wreak havoc on commercial roofs — denting membranes, damaging flashings, and even breaching waterproofing layers. For property managers and building owners, the key to reducing costs and minimizing downtime lies in storm-proofing your roof before hail season hits.

At CMProofing, we specialize in preparing commercial roofs to withstand Alberta’s toughest weather. Here’s how you can protect your investment before the next storm rolls in:

1. Schedule a Pre-Season Roof Inspection

Start by booking a professional inspection. We check for:

• Existing vulnerabilities (cracks, blisters, loose seams)
• Weak or aging membranes
• Signs of ponding water or poor drainage
  Early detection is your best defense. Minor issues can be reinforced before they turn into major leaks under hail impact.

2. Reinforce High-Risk Areas

Certain roof features are especially prone to hail damage, including:

• Flashings around HVAC units and vents
• Perimeter edges and parapet walls
• Roof penetrations (drains, skylights, pipes)

We recommend applying protective coatings, reinforced membranes, or extra fastening in these zones to absorb impact and prevent tearing.

3. Upgrade to Impact-Resistant Materials

If your current roof is near the end of its lifespan or showing signs of stress, now is the time to consider an upgrade.
Popular hail-resistant options in Calgary include:

• SBS-modified bitumen systems
• High-mil TPO membranes
• Ballasted or reinforced EPDM
  These materials provide better flexibility and puncture resistance during hail impact.

4. Check and Clear Drainage Systems

Blocked or undersized drains can turn a hailstorm into a flood. Ensure all:

• Gutters
• Scuppers
• Internal drains
  …are clear of debris and functioning properly. Standing water from heavy rain and melting hailstones increases the risk of roof failure.

5. Document Your Roof’s Condition for Insurance

Before the season starts, take photos of your entire roof system and any minor repairs. This documentation can speed up insurance claims if damage does occur. We also offer detailed inspection reports with timestamps for your records.

Protect Your Roof, Budget, and Business

Don’t wait for the first hailstorm to reveal your roof’s weaknesses. Storm-proofing is the most cost-effective way to extend your roof’s life and avoid emergency repairs.