Common Metal Roof Problems That Need Repair

Metal roofing surged in popularity for residential and commercial buildings because of its durability, energy efficiency, and low maintenance requirements.

Metal roofing surged in popularity for residential and commercial buildings because of its durability, energy efficiency, and low maintenance requirements.

Metal roofs come in various designs and materials, including aluminum, steel, copper, and zinc. They can have different styles or colors and imitate shingles or clay tiles.

Despite their durability, metal roofs can develop issues and degrade. Here are some common problems that may occur with metal roofs.

Leaks

Metal roofs can develop leaks due to damage from impact, rust, or exposure to extreme weather conditions. Leaks can also occur from improper installation. Fastening failure (screws too loose, too tight, or not centered) and flashing failure (sealant not applied correctly) are two common causes of leaky roofs.

Therefore, regular maintenance and inspections can help prevent leaks and prolong the life of a metal roof.

Corrosion

While all metal roofs receive protective coatings in production, they might rust under certain circumstances. Cutting the metal roofing material during installation exposes an open edge, which invites moisture inside. This is where the rusting process begins.

Saltwater can have a corrosive effect on metal since salt accelerates oxidation. Therefore, metal roofs in coastal areas also require extra care since they are more vulnerable to corrosion. 

Corrosion can also occur from metal degradation, usually due to different types of metal or coatings reacting to one another or from rapid freeze-thaw cycles.

Scratches

Scratches on a metal roof can occur due to environmental factors, including debris, fallen branches, or even hail. Alternatively, someone stepping on the roof during or after its installation may introduce and grind dirt or gravel into the metal. These scratches are unsightly and may lead to rust or other forms of corrosion over time as they erode the protective covering of the metal roof.

Most light scratches are repairable using a rust inhibitor and touch-up paint specifically designed for metal surfaces. However, if the scratches are deep or extensive, please get in touch with a professional roofing contractor to assess the damage and make any necessary repairs.

Fading paint

Metal roofs are made to last by their protective coating. However, the paint will eventually fade due to various factors such as sunlight, weathering, and pollution. In addition, the roof may discolor unevenly because panels can receive varying amounts of light and exposure to airborne pollutants.

To prevent fading, choose a high-quality paint specifically designed for metal surfaces and reapply it as needed to maintain the roof's appearance.

Oil canning

Metal roofs commonly develop oil canning, characterized by the visible undulation or waviness in the surface of the metal. It arises from the natural expansion and contraction of the metal due to changes in temperature and humidity, typically in flat or low-sloped roofs. Oil canning presents differently depending on the shape of the roof and the viewing angle, which might make it slight to severe.

Oil canning doesn't affect the roof's structural integrity, but some building owners (and customers) may find it unappealing. Thicker sheets or ribbed or textured surfaces on metal roofing during installation can minimize the effect.

Invest in expert metal roof maintenance

Regular maintenance is necessary to clean the roof and check for potential problems. However, do not let minor issues escalate to the point of causing systemic failure. It is advisable to do this at least once a year.

Feel free to seek professional services if one is unfamiliar with metal roof maintenance.

Master Pro Services provides expert roofing repair and replacement in Richmond, Chesterfield, Midlothian, Hopewell, Ashland, Glen Allen, Moseley, Fort Lee, and surrounding areas. Our services encompass all residential and commercial roofing structures, including flat roofs, Dimensional, three-tab, designer shingles, metal roofing, EPDM roof membranes, thermoplastic roof membranes (TPO), as well as windows, gutters, and other roofing components. Financing is available. BBB member. Call us now at (804) 552-5007.