How Rapidly Changing Environments  Impact Your Roof

Minnesota homes are built to withstand a lot, from hot July afternoons to icy January mornings. Few parts of a home endure more stress from these swings than the roof. As we move into fall, it is worth looking at how the change in seasons affects your roof on a scientific level and why fall is the most strategic time to make improvements.

 

Temperature Swings & Material Stress

Roofs expand and contract with temperature changes. Asphalt shingles are flexible, but they can become brittle when cold air sets in. Metal expands in heat and contracts in cold, which is why professional installation and fastening are crucial. If these shifts are not accounted for, small gaps can form that eventually lead to leaks.
Fall offers a unique balance. Moderate temperatures mean roofing materials are less stressed during installation, allowing them to seal, fasten, and settle properly before winter extremes.

The Freeze-Thaw Cycle

Minnesota’s notorious freeze-thaw cycle begins in late fall. When water seeps into small cracks or under shingles and then freezes, it expands. That expansion widens gaps, pushes materials out of place, and accelerates wear. A roof that seems fine in September can show real damage by February if vulnerable spots are left unaddressed.

Moisture and Ventilation

As temperatures drop, humidity levels fluctuate. Without proper ventilation, condensation can form in the attic, leading to mold, mildew, and wood rot. Warm air rises, meets cold roof decking, and condenses into moisture. A well-built roof with balanced insulation and ventilation prevents this from happening.

Why Fall is an Ideal Season for Roofing

Fall provides the conditions that allow roofing work to perform at its highest level. Materials install correctly, ventilation can be optimized before winter, and small issues can be corrected before the cycle of freezing and thawing begins.
At Les Jones Roofing, we bring decades of experience to every project with a focus on care, consistency, and craftsmanship. By taking action in the fall, you not only protect your home for the winter ahead but also extend the life of your roof for years to come.

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Les Jones Roofing has served the Twin Cities for over 40 years with expert roofing services. Call us at (952) 881-2241 or email [email protected] to schedule a consultation or inspection today. 

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