The Drawbacks of Barn-Style Metal Roofs with Exposed Screws in Snowy Climates

Introduction to Barn-Style Metal Roofs

Barn-style metal roofs, also known as corrugated metal roofs, are known for their economical pricing and rustic aesthetic. Often, these roofs use exposed screws for attachment, offering a straightforward installation process. However, for all their advantages, these roofs may pose specific challenges in snowy climates, due to the presence of these exposed fasteners.

Potential for Leaks: An Issue of Sealing

The primary disadvantage of barn-style metal roofs with exposed screws in snowy environments is the potential for leaks. Each exposed screw represents a breach in the otherwise continuous roofing surface. Although initially sealed by a rubber washer, these washers can degrade over time, leading to compromised sealing.

In cold, snowy climates, the freeze-thaw cycle – where snow melts and then refreezes – can expedite this degradation process. When water freezes around the base of the screw, it can cause the washer to crack or warp, increasing the likelihood of water ingress. This water can then seep into the interior of the building, potentially causing damage to the structure and interior.

Maintenance Challenges: The Cost of Upkeep

Another disadvantage of exposed fasteners on metal roofs is the maintenance they require. Regular checks are necessary to identify and replace degraded washers, ensuring the continued weatherproofing of the roof. This upkeep can become a burdensome and costly task, especially in snowy climates where checks and replacements may need to be more frequent due to the harsh conditions.

Additionally, the screws themselves can rust or loosen over time, particularly when subjected to the intense conditions of a snowy winter. This issue not only compromises the roof's longevity but also necessitates further maintenance and potentially expensive repairs.

Rethinking Roofing Choices: In Search of Better Alternatives

Given these challenges, homeowners and builders in snowy climates should consider alternatives to barn-style metal roofs with exposed screws. Standing-seam metal roofs, for example, have concealed fasteners, mitigating many of the issues discussed above. While these alternatives might require a higher initial investment, they can offer enhanced durability and reduced maintenance needs, making them a cost-effective choice in the long run.

Conclusion

While barn-style metal roofs with exposed screws provide certain advantages such as cost-effectiveness and easy installation, their suitability in snowy climates is not advised. The potential for leaks and increased maintenance requirements are all critical factors to consider.