Onstad Construction | Roofing Services in Winona, MN 55987

Winona's climate, with its freeze-thaw cycles, heavy snow, and spring melt, puts immense stress on roof flashing. This metal component seals roof joints and valleys. Over time, moisture and salt from melting snow can accelerate corrosion, especially on older flashing. Once compromised, it's a primary entry point for water, leading to the leaks many homeowners see after the snow melts. We inspect and reinforce flashing as a standard part of any Winona roof repair or replacement.

It depends on the extent of the damage. Often, leaks after a melt are localized to areas with failed flashing, damaged shingles, or compromised seals around vents. We start with a thorough inspection to identify the exact source. In many cases, a targeted repair is sufficient. However, if we find widespread wear, multiple leak points, or underlying deck rot—common if a leak has gone unnoticed—a replacement may be the more cost-effective, long-term solution. We'll always provide an honest assessment and explain all your options.

Properly installed, energy-efficient windows are a key part of your home's weather defense. In Winona, old or poorly sealed windows can lead to heat loss, ice dam formation on the roof edge, and interior moisture issues. By upgrading to quality windows with our precise installation, you improve your home's thermal envelope. This reduces the risk of ice dams (a major cause of winter roof leaks) and helps maintain consistent indoor temperatures, which lessens stress on your entire structure, from the roof down.