Metal roofs are a great option for those who want a highly durable, attractive and long-lasting roofing material. Metal roofs can be quite expensive compared to traditional asphalt shingles, but they can last a lifetime. This type of roofing offers better performance during extreme weather conditions. In addition, metal roofing is more fire resistant when compared to other materials. A metal roof also keeps your home cooler in summer and warmer in winter, saving you money on your energy bills. 

For more than 50 years, metal roofing has been used on both older homes and modern-style residences. Practically and aesthetically, metal roofs are a great option. However, roof leaks can never be avoided especially if proper care is not taken to maintain your metal roof. A leaking metal roof can be caused by various factors, such as:

  • Mud Seals
    Mud seals are also one of the main causes of a leaking metal roof. These occur when there is a constant build-up of dirt along the seams. Rain washes away some of the dirt, but it can accumulate in the seams. The mud dries and seals the seams. The next time it rains, some water may penetrate the mud seal but won’t be able to get out. With constant build-up of water in the overlaps and mud seals, water may leak underneath the roofing material. 

  • Thermal Shock
    Metals have the ability to expand and contract with temperature change. As the material expands and contract, fasteners tend to loosen up. Holes may elongate and loosen too. These can be the cause of your leaking metal roof. 

  • Aging
    Just like in any roofing system, aging is a natural cause of leaking. As the materials age, their efficiency will naturally decrease. As for metal roofs, fasteners may loosen over time. As well, a metal roof becomes less resistant to weather conditions over the years. 

  • Rust and Corrosion
    Long-term exposure to snow, rain, sleet, hail and ponding water can eventually cause a metal roof’s finish to fail. The uncoated metal can rust as it ages.


Metal roof leaking, when not addressed early on, can lead to extensive and expensive repairs. While leaking is common problem in many roofing systems, it doesn’t have to be a problem with your roof. Proper care and maintenance will allow you to enjoy the beauty and durability your metal roof for many years to come. 

If you’re interested in having a metal roof installed on your home, or need repairs on your existing metal roof, contact Cherry & Clark Roofing today. We’d be happy to answer any questions you have about metal roof maintenance and replacement.