How Snow and Ice Dams Affect Colorado Roofs
Colorado’s winters are known for heavy snowfall and frigid temperatures, both of which can lead to one of the most damaging winter roofing issues: ice dams. These frozen ridges of ice can wreak havoc on your roof, gutters, and interior walls if not properly managed.
Here’s what every Denver-area homeowner should know about snow, ice dams, and roof protection.
What Is an Ice Dam?
An ice dam forms when snow on your roof melts, runs down to the eaves, and refreezes. This creates a barrier that traps melting snow behind it. The backed-up water can then seep under shingles and into your home.
Why Ice Dams Are a Problem
Roof Leaks: Water trapped behind an ice dam can work its way under shingles and into your attic or ceiling.
Structural Damage: Prolonged exposure to moisture can rot wood decking and framing.
Insulation Damage: Wet insulation loses its effectiveness and can lead to mold growth.
Gutter Damage: Ice dams add extra weight and can tear gutters away from your roofline.
What Causes Ice Dams in Colorado?
Poor attic insulation
Inadequate ventilation
Warm spots on the roof caused by escaping heat
Freeze-thaw temperature cycles typical in Denver winters
How to Prevent Ice Dams
1. Improve Attic Insulation
Insulation helps keep warm air inside your home and out of the attic. This prevents uneven melting on the roof.
2. Ensure Proper Ventilation
Attic ventilation keeps roof temperatures consistent, reducing the chances of snow melting prematurely.
3. Seal Air Leaks
Check for gaps around light fixtures, exhaust fans, or attic hatches that let warm air into the attic.
4. Install Ice & Water Shield
This waterproof membrane installed beneath the shingles at the eaves offers extra protection from water intrusion.
When to Call a Professional
If you notice icicles, water stains, or peeling paint on your ceilings or walls, it’s time to call a roofing expert. Addressing the issue early can prevent major water damage and costly repairs.
Ice dams are common but preventable. With the right combination of insulation, ventilation, and maintenance, you can protect your home and extend the life of your roof.
Contact Ideal Roofing and Solar for a winter readiness inspection to keep your roof protected from snow and ice.