A metal roof is a big investment. While their service life can be between 40 and 70 years (compared to the ten to twenty years of the average asphalt roof), metal roofs are long term commitments as well. That’s a great thing when the roof is properly installed and cared for over the years. Plus, metal roof systems are environmentally friendly, since they’re 100% recyclable once their long service life comes to an end. However, if the metal roof isn’t maintained properly, there are some common problems that can arise.
The best defense is a good offense when it comes to most things in life and protecting metal roofing from damage is no exception. Metal roof systems can begin to weaken over time due to oxidation known as electrochemical corrosion. Wind and rain can cause what’s called flow accelerated corrosion, due to the protective layer of the roof being removed by high-impact weather. Exposing metal roofs to the elements is never ideal. To repair—or even prevent—rust on your metal roof, Inland Coatings has a number of options, including the RC-2000 Rubber Roof Coating, that provide effective protection for your roof.
One of the most common problems with metal roofs is leaks. This can happen thanks to rust, gaps due to poor installation, punctures from impact from trees or other debris, and any other number of issues. However, if your roof is already experiencing leaks, a complete tearoff may not be your only option. Inland Coatings rubber roof coatings require no primers and can protect a metal roof with 500% elongation and 1520 PSI tensile strength. Gaps in seams and penetrations can be protected using our RC-2200 Seam Compound and RPM-400 Polyester Mesh. Fasteners can become damaged or loose, leading to leaks. The RC-2200 Seam Compound, Brush Grade, addresses these issues well.
Heavy foot traffic can lead to dents in a metal roof. When the roof’s shape is changed, its integrity is compromised. When rain or snow falls, it can quickly collect and pool in dented areas of the roof, causing undue pressure and stress—both on the roof and the owner! Making sure to conduct regular maintenance can prevent your roof from experiencing these issues and if your metal roof is collecting water, be sure to clear it as soon as it’s safe to do so, in order to prevent larger problems.
Expansion and Contraction
Metal “breathes,” meaning it expands and contracts due to fluctuations in temperature. In the heat, a metal roof expands and will contract in colder weather. If fasteners aren’t installed properly, metal roof panels can loosen over time. First things first, an inspection should be completed to ensure all fasteners are correctly in place. Seams and penetrations can be reinforced using RC-2200 Rubber Roof Coating and RPM 400 Polyester Mesh. Finished with the RC-2000, which features 1,500 PSI tensile strength and 500% elongation, a metal roof can be protected against damage caused by expansion and contraction. Even better—the RC-2000 White has a solar reflectance of 87%, keeping your metal roof cooler and therefore, lowering your electric bill.
It can be difficult to find the right color when it comes to metal roofing. While this isn’t often considered a major issue, making sure your metal roof is aesthetically pleasing is important. The RC-2000 Rubber Roof Coating not only comes in twelve standard colors, Inland Coatings will custom match any color with a minimum 100 gallon order. Plus, the RC-2000 resist acids, salts, and alkali, meaning your metal roof will maintain its color throughout the years.