Metal roofing systems offer a variety of benefits for homeowners, including longevity, durability, and resistance to mold and rot. Yet like any roofing system, metal roofs need occasional care. Review some of the most common issues you might encounter so you can protect your property. 

A Guide to Metal Roofing Problems  

1. Oil Canning

When a metal roof features wrinkled, buckled, or wavy sections that should be flat, you’re dealing with oil canning. Also known as stress wrinkling or elastic buckling, oil canning can impact any type of metal, including aluminum, steel, copper, or zinc.

It has numerous causes, such as undue pressure during manufacturing, improper handling and installation, and insufficient space for thermal expansion. The affected panels require replacing, usually with a thicker metal.

2. Corrosion

Without waterproof coating, galvanized and Galvalume®  steel roofs will corrode, especially in humid climates. While waterproof coatings create barriers between moisture and your roof, they require periodic inspections to check for damage.

Any cut or other damage that removes some of the coating makes your roof vulnerable to rust, which weakens the metal and looks unsightly.

3. Scratches, Punctures & Dents

Tree branches that are too close to your roofing system can scratch the metal, increasing the risk of corrosion. Flying foreign objects during storms can also cause dents or punctures.

Depending on the damage, the roof may need waterproof coating reapplication or caulking to address it.

4. Leaks

Most metal roofing leaks occur at the seams from loose fasteners; however, they can also result from the aforementioned punctures. Corrosion can also cause your metal roof to leak.

Leaks increase the chance of mold and mildew growth within your home in addition to rotting the roof underlayment. If you notice water stains on ceilings or walls, call for roof repairs promptly.

5. Fading Paint

Sunlight eventually fades any material, including your metal roof. It causes the protective coating to deteriorate as well, which makes the roof subject to the elements.

Aside from appearance, paint offers many other benefits, such as increased UV reflection and pest deterrence. Schedule recoating services promptly. 

Trust your metal roofing system to the experienced contractors at American Roofing. Based in Anchorage, AK, the roofing company works on all types of residential and commercial roofs, providing services that increase energy efficiency and comfort. Call the licensed, bonded, and insured contractors today at (907) 345-8700 to schedule repairs or get service details online.