Flat and low-slope roofs offer great utility space and are common on commercial buildings throughout Vermont and New Hampshire—but winter brings a unique set of challenges that can lead to serious damage if not managed properly.

At Rodd Roofing, we’ve seen it all: ponding water that freezes, ice dams along the perimeter, and snow drift that stresses structural supports. The good news? With the right winter maintenance strategy, you can avoid costly emergency repairs.

Key Winter Threats to Flat Roofs in VT & NH

1. Ponding Water That Freezes
   Flat roofs often collect water in low spots. In winter, that water freezes and expands, stressing seams, cracking membranes, and adding weight to the roof system.
   
2. Perimeter Ice Buildup and Dams
   Without proper drainage, melting snow can refreeze along roof edges or around drains. This causes ice dams that back up water beneath the membrane.
3. Snow Drift and Uneven Load
   Flat roofs don’t shed snow evenly. High winds can pile snow into one area, overloading structural components and creating sagging or leaks.

Proactive Maintenance Tips

1. Keep Drains and Scuppers Clear
   Before and after storms, make sure all drainage systems are free of debris and ice. Clogged drains are a leading cause of winter roof failure.
2. Remove Excess Snow Safely
   Use roof rakes from the ground or call trained professionals. Avoid damaging the membrane or insulation with heavy tools or aggressive shoveling.
3. Monitor for Ice Dams and Ponding
   After thaws, inspect the roof for signs of refreezing near drains and edges. Watch for standing water that returns after melting.
4. Schedule Mid-Winter Roof Checks
   Have a professional inspect the roof during winter to catch problems early. It's the easiest way to prevent major spring repairs.

Why Monitoring Matters More Than Ever

Flat roof damage often goes undetected until it’s too late. Small issues—like ice buildup or backed-up drains—can quietly cause thousands in damage before spring arrives. Regular checks during winter are a low-cost way to protect your building, avoid downtime, and preserve your warranty.

Protect your investment all season long—schedule a winter roof check today. Call Rodd Roofing at  (802) 748-4555 to book your inspection.