The roof on your home protects the structure and your family from inclement weather. One of the most durable varieties is metal roofing, which provides an affordable and attractive covering that can withstand many potential issues. However, these installations can still experience damage over time. Here are several problems you may notice with your roof as it ages.

What Can Happen to a Metal Roofing Installation?

1. Movement

Even with proper installation, metal barn or house roofing can potentially move. This occurs because metal has a high coefficient of thermal expansion, which means that as it heats up, the flashings, fasteners, washers, and seams will shift. When repeated expansions and contractions shift the finished roof seams, water can reach beneath the roofing panels and inside the home. Repairing the roof requires removing and replacing the screws, washers, and fasteners. Applying a long-lasting sealant, such as silicone, completes the repair.

2. Punctures

While metal roofing is durable, certain items can poke holes in it as it ages. For example, construction or maintenance workers dragging materials across the surface can scratch the protective layer and puncture the surface. When work involves moving on the roof, designate a pathway for individuals to walk, keeping them away from the edges of the panels. This helps prevent crimping and crushing so that water doesn't pool on the surface.

Alternatively, a large tree branch may fall on your roof and puncture it. When this happens, caulking the hole will temporarily fix the issue, but you should schedule professional repairs. Contractors will place a galvanized metal patch or roofing tape over the opening, depending on the extent of the damage.

3. Rust

If you have a steel roof, the panels undergo galvanization and treatment to prevent rust. However, this protective layer can wear off when water pools for long periods. Then, the moisture can contact the steel directly, allowing corrosion to spread throughout the panels. This compromises the structural integrity of the roof, increasing the likelihood that it will shift or break. Having roofing contractors inspect the structure at least once a year and reapply a rust inhibitor helps prevent this issue.

When you need a metal roof to cover your home, business, or barn, contact Greenview Metal in Blair, WI. Backed by 20 years of experience, this local company provides metal roofing and siding fabrication to residents throughout Trempealeau County. They offer a 40-year paint warranty on their products, helping give you peace of mind that the roof will last for many years. Visit the website for more information about their services, and call (715) 538-1325 to obtain an estimate for your project.