How Snow and Ice Can Damage Your Roof

January 15, 2026

Winter weather can be especially tough on residential roofing systems. While snow and ice may seem harmless at first, repeated exposure can lead to serious structural and moisture related issues. Understanding how snow and ice can damage your roof helps homeowners take preventative steps and avoid costly repairs during and after winter storms.

Snow-covered roof and gutters with icicles hanging in winter.

Excess Weight From Snow Accumulation

Heavy snowfall adds significant weight to your roof. Wet snow is especially problematic because it is much heavier than powdery snow. Over time, this weight can strain roof decking, rafters, and trusses.


Prolonged snow buildup on roofs increases the risk of sagging and structural stress, particularly on older homes or roofs nearing the end of their lifespan.


Ice Dams and Water Backup

One of the most common winter roofing problems is the formation of ice dams. Ice dams occur when heat escapes through the roof, melting snow that later refreezes along the roof edge.


This buildup prevents proper drainage, forcing water back under shingles where it can cause roof leaks, damaged insulation, and interior water stains.


Freeze and Thaw Cycles Break Down Materials

Winter temperatures often fluctuate above and below freezing. These freeze thaw cycles cause snow and ice to melt and refreeze repeatedly, expanding and contracting roofing materials.


Over time, this process weakens shingles, flashing, and sealants, increasing the likelihood of cracking and premature roof wear.


Shingle Damage From Ice and Sliding Snow

Ice and compacted snow can lift, crack, or dislodge shingles. When snow slides off a roof in large sheets, it can tear shingles loose and damage gutters.


This type of winter roof damage may not be immediately visible but can lead to leaks once temperatures rise.


Blocked Gutters and Poor Drainage

Snow and ice can clog gutters and downspouts, preventing proper drainage. When water has nowhere to go, it can back up under roofing materials or overflow near the foundation.


Maintaining clear drainage paths is an important part of winter roof maintenance.


Attic Insulation and Ventilation Issues

Poor attic insulation and ventilation contribute to uneven roof temperatures, which accelerate ice dam formation. Warm air escaping from the attic melts snow unevenly, increasing the risk of water intrusion.


Addressing insulation and airflow issues helps protect against long-term roof damage from ice.


Signs Your Roof May Have Winter Damage

After heavy snow or ice events, homeowners should watch for warning signs such as:

  • Water stains on ceilings or walls
  • Missing or lifted shingles
  • Sagging rooflines
  • Ice buildup along roof edges

Early detection helps reduce repair costs and prevents further damage.


Conclusion

Snow and ice can cause significant roofing issues, from excess weight and ice dams to roof leaks and material breakdown. Understanding how snow and ice can damage your roof allows homeowners to take preventative action before problems escalate. Overmyer Roofing provides professional inspections, repairs, and winter roof maintenance services to help protect homes throughout the coldest months and beyond.


Dormer windows on a blue and white house roof with green tree branches against a light blue sky.
By Erin Tamm February 9, 2026
Learn how long a new roof lasts in Pennsylvania’s climate and what factors like weather, materials, and maintenance affect roof lifespan.
Dark gray asphalt shingle roof showing the intersection of two roof planes.
February 6, 2026
Compare asphalt shingles vs. metal roofing to learn which option offers better durability, cost value, and performance for your home.
Snow-covered roof and gutter on a house exterior, during winter.
By Erin Tamm February 1, 2026
Learn the top signs your roof suffered damage from winter ice and snow, including leaks, ice dams, shingle damage, and sagging.
January 27, 2026
A Neighbor’s Recommendation Turned Into Long-Term Protection in Cherry Valley, Pennsylvania
January 27, 2026
From Unseen Wind Damage to Complete Peace of Mind In Stroundsburg, PA
January 27, 2026
Doing It Right — Even When It’s an Investment Property in Nazareth Pennsylvania
January 27, 2026
Some projects are bigger than a single home. They carry history, responsibility, and the need to get things done the right way. This was the case for a large hunting and fishing lodge located in Dingmans Ferry, Pennsylvania a well-known, historic structure in the area that was due for another full roof replacement. The lodge invited several roofing contractors to bid on the project, including Overmyer Roofing. From the very beginning, it was clear this would not be a standard residential roofing job. Doing What’s Right — Even Before Being Chosen Because this building is a multi-owner property, the warranty options available are very different from those of a single-family residence. During our initial conversations, we were the only contractor to bring this up explaining how manufacturer warranties apply differently and what needed to be structured correctly to ensure the property was truly protected long-term. We didn’t just explain this to the lodge members we also shared this information openly so that any contractor bidding the project would have the opportunity to submit a proposal that met the correct requirements. That transparency mattered. After extensive evaluations, design discussions, and careful review of the roof’s unique structure, Overmyer Roofing was selected for the project for knowledge, honesty, and accountability. Rebuilding From the Deck Up Due to the age of the building, the project required a complete tear-off of all existing roofing materials. Once removed, the original roof deck was exposed old plank board decking with large gaps between boards, which is not suitable for modern roofing system installation. To ensure the new roof would perform properly, we installed new plywood sheathing across the entire roof surface, creating a solid, code-compliant foundation. During this phase, lodge members also requested the removal of a dormer on the front roof slope. We carefully removed the structure, framed it out, and seamlessly tied it back into the roof system. As access to the eaves was gained, additional issues were uncovered: ● Broken rafter tails ● Rotted fascia boards ● Heavy debris buildup restricting attic airflow Rather than covering these issues, we addressed them head-on. We rebuilt the eaves, installed new vented vinyl soffit for proper intake ventilation, and finished the perimeter with custom-bent aluminum fascia. Complete Water Management — Roof to Ground To further protect the structure, we installed 6-inch commercial-style aluminum gutters designed to handle higher roof volumes and heavy rainfall. These were paired with professional-grade gutter protection, reducing debris buildup and helping ensure consistent water flow away from the building year-round. This system adds another critical layer of defense especially important for a large roof structure surrounded by trees and exposed to seasonal weather. A Roof Built to Perform for Decades With the structure corrected and properly prepared, we installed a CertainTeed Landmark Pro Five-Star roofing system, complete with: ● Proper soffit intake ventilation ● Continuous ridge vent exhaust ● Manufacturer-approved materials throughout The result is a fully integrated roofing and drainage system designed to perform, breathe, and protect this historic lodge for many years to come. Despite the scale and complexity of the project, the entire installation was completed in approximately six days, thanks to efficient material coordination from our vendors and the execution of our highly trained crew. Experience, Integrity, and Long-Term Protection Large, multi-owner properties require more than just labor they require planning, communication, and an understanding of what’s at stake. This project wasn’t just about installing shingles it was about protecting a landmark and the people who rely on it. At Overmyer Roofing, we bring the same level of care, transparency, and craftsmanship to every project whether it’s a single-family home or a historic lodge. When the details matter and the stakes are high, we’re proud to be the contractor trusted to get it right.
A brick house covered in snow with a closed garage door and a small front yard covered in snow.
January 6, 2026
Learn when and why snow should be removed from your roof after a winter storm to prevent ice dams, roof leaks, and structural damage.
Four different roof tile styles: gray, blue, orange, and gray asphalt shingles.
December 8, 2025
Learn which roofing materials perform best in snowy climates, including metal, asphalt, slate, cedar, and synthetic roofing options.
Snow-covered house during a blizzard, with drifts piling up on the roof and blowing snow.
November 12, 2025
Learn safe ways to remove snow from your roof and prevent damage this winter with professional roofing tips from Overmyer Roofing.
Show More