Ice Dams: How They Form and How to Prevent Them

Every season of the year comes with its own problems and winter is no exception. One such problem that can occur during winter is ice dams. In this post, Advanced Roofing, Inc., one of the leading local roof repair contractors will discuss ice dams and how they occur.

What Are Ice Dams?

Ice Dams are chunks of ice usually found on the lower edge of rooflines. Ice dams happen in areas with cold winter temperatures and regular snowfall. If they form and get heavy enough, they can risk damaging the very structure of your roof eaves. 

They also let melted water flow under the shingles, where it can also reach the ceiling and wall surfaces. If left unattended, ice dams can damage residential roofing systems, gutters, paint, insulation and interior drywall and other surfaces.

How Do They Occur?

Ice dams happen when snow unfreezes on a higher and warmer part of a roof, often due to a warm attic and in turn due to poor insulation. When this melted snow flows on the colder eave overhang, it freezes again. As the ice builds up, it creates a blockage that hinders the melted snow from running down the roof. It continues to build up under the roof shingles, where it unfreezes, leaving the roof sheathing soaked and also creating attic leaks. This melted snow then soaks the insulation and drips through the ceiling drywall. Some large ice dams are heavy and can cause damage to gutters. If dislodged, they can also result in severe injuries.

How Can I Prevent Them?

A cold roof is the first step to preventing ice dams. To do this, you’ll need to seal any leaks. Look for cracks around light fixtures, holes, gaps in your drywall and any areas where the warm air from your home interior can seep into your attic. Once located, seal them with caulk or foam. Sealing leaks also keeps your HVAC system from working too hard just to maintain the right temperature, thus lowering your energy bills.  

Turn to Advanced Roofing, Inc., for roofing work done swiftly and professionally. Our services include siding, gutters, windows, and residential and commercial flat roof repair. Give us a call at (630) 521-3573 or fill out our contact form for a consultation. We serve clients in Illinois, including Naperville, IL.