The Impact of the Freeze-Thaw Cycle on Your Roof

Living in the Midwest means dealing with unpredictable winter weather. Harsh winter conditions create the perfect storm for roofing damage. The fluctuating temperatures, combined with snow and rain, can begin to take a toll on your roof because of the shifts. This cycle, commonly known as the freeze-thaw cycle, can significantly impact your roof. 

In this blog, we're diving into what the freeze-thaw cycle is and how it affects your roof, so you can be aware of the dangers each winter. 

What is the freeze-thaw cycle?

The freeze-thaw cycle is a typical winter occurrence that can reveal existing underlying conditions and worsen them over time. Once temperatures drop below 32 degrees Fahrenheit, leftover snow and rain begin to freeze. As temperatures start to climb, the water begins to melt. Before you know it, the water refreezes as soon as it gets cold, so the cycle repeats itself. Depending on the temperature shifts, you may experience this a dozen times throughout the season. 

The constant thawing and refreezing add stress to your roof and can cause common types of roof damage over time. When water freezes, it can add pressure to your shingles, decking, and flashing. You may even notice ice dams forming on your roof as a result of the constant temperature changes. 

As a homeowner, it’s essential to be aware of what happens to your roof, so you can spot minor issues before they become a major problem. 

Roofing problems caused by the freeze-thaw cycle 

The constant temperature changes affect your roof more than you might think. After each cycle, you may begin to notice issues with your asphalt shingles, flashing, or even see signs of water leaks. As the snow begins to melt, water seeps into any cracks in your roof. Once it freezes again, the water inside those cracks begins to expand, putting pressure on your roofing materials. If the frozen water is beneath your asphalt shingles, it can cause the shingles to lift, crack, or come loose from the roof. Even the shingle granule bonds, which hold the protective layer of granules in place, can weaken, causing your shingles to lose their weather resistance.

Your flashing can also expand and contract with temperature changes, leading to cracks or gaps that allow water to leak into your home. Once water begins to enter your home through cracks and gaps in your roof, your home may be at risk of water damage, depending on the severity of the leak. 

While you may not think much of the constant change throughout the season, your roof can feel the difference. 

How the freeze-thaw cycle leads to ice dam formation 

The freeze-thaw cycle can also impact the formation of ice dams along the edge of your roof. When ice dams form, they prevent water from draining, which can back up under your shingles. All of the added stress from this continuous cycle puts unnecessary strain on your roof, leaving it vulnerable to leaks, cracks, and structural issues. 

When roofing materials like decking accumulate moisture, they begin to rot. After a while, your roof can begin to sag in certain areas, indicating moisture damage. Poor attic insulation or ventilation can make ice dam formation even worse, as warm indoor air melts the snow unevenly.

Being aware of the impact of the freeze-thaw cycle can help you be on the lookout for new problems and take action quickly to prevent costly issues down the line. 

Be worry-free with Ken-Z Roofing this winter! 

As a homeowner, you may be wondering if your roof has been affected by the freeze-thaw cycle. The easiest way to see if your roof has any damage is to schedule a roof inspection. At Ken-Z Roofing, our 12-Point Inspection provides a comprehensive overview of your roof's condition and offers solutions for any issues we identify. 

We have over 30 years of experience helping homeowners across Northern Illinois with professional roofing repairs and replacements. Have peace of mind this winter knowing your home is protected. Call us today at 815-395-8244 to schedule your 12-Point Inspection.