If you live in Northeast Ohio, you know how unpredictable our winters can be. One day it's snowing, the next day the sun is out and everything starts to melt. Then another round of freezing temperatures sweeps in. This roller coaster of freezing and thawing is tough on many parts of your home, especially your roof.
What Are Freeze-Thaw Cycles and Why Should You Worry?
A freeze-thaw cycle happens when the temperature rises above freezing after a snow or ice event, causing snow and ice to melt, and then drops back below freezing, which causes the melted water to freeze again. Repeated expansion and contraction are rough on building materials—especially asphalt shingles. Over time, this process can open up tiny cracks and create problems.
Tip 1: Inspect Your Roof Before the First Freeze
Look for missing, curled, or cracked shingles. Pay attention to areas where two roof lines meet and places near chimneys or vents. Water will find its way into even the smallest gap. Once it sneaks in and temperatures drop, that water can freeze, expand, and make a small crack much larger.
Tip 2: Clean Gutters and Downspouts Regularly
When gutters get clogged with leaves or debris, water can back up onto your roof. Standing water finds its way under shingles or into small gaps. During a freeze-thaw cycle, this trapped water freezes and expands, prying up shingles and flashing.
Tip 3: Address Ice Dams Before They Cause Long-Term Trouble
Warm air from your house rises into your attic, melting snow on the roof. That water runs toward your eaves, where it refreezes. This growing block of ice forces melted water to back up under your shingles. To prevent ice dams, make sure your attic is properly insulated and ventilated.
Tip 4: Repair Flashing and Sealants
Every Northeast Ohio roof has weak points—places where metal flashing or caulk provides the only real barrier against water. During freeze-thaw cycles, old or cracked sealants can break apart. Loose flashing can rise up, creating an easy path for water.
Tip 5: Replace Damaged Shingles and Perform Preventive Maintenance
Damaged shingles provide weak spots where moisture can slip in, freeze, and spread to nearby shingles. One missing shingle often leads to a series of failures during repeated freeze-thaw cycles.
Bonus Tip: Don't Ignore Your Warranty and Insurance
Regular maintenance is crucial for keeping your roof warranty valid. Save any inspection or repair records.
Checklist: Preventing Roof Damage During Freeze-Thaw Cycles
• Inspect your roof every fall for cracked, missing, or curling shingles
• Clean gutters and downspouts to prevent water backups and ice dams
• Check and update attic insulation and ventilation
• Look for damaged flashing, sealants, and caulk
• Replace damaged or missing shingles as soon as you spot them
• Schedule a professional roof inspection if you see anything unusual
Worried about freeze-thaw damage? Call M&T Roofing at (440) 201-4341 for a professional roof inspection.