![]() ![]() There are many different methods to clean a metal roof most of which are dependent on what element needs to be cleaned off of the roof’s surface and the level of severity. Simple cleaning once a year will help keep the dirt and other visible elements from making your roof look dirty, moldy, or discolored to the naked eye. In other words: You want it to look good for as long as possible. Nobody wants a dirty or unsightly roof, especially since you paid a relatively large sum of money for a metal roof. #3: Maintains the aesthetics of a metal roof There are also elements that won’t create a problem with the paint or the substrate but just makes the roof look dirty, even when it’s actually not. Keep in mind, most metal roofing paint warranties don’t cover excessive chalking in the presence of pollutants, which is why it’s important to regularly clean your roof. Oftentimes, the difference can be subtle however, if you swipe the panel with your finger, you can notice the chalky residue on your skin. These particles will eventually become visible to the naked eye on the metal’s surface. Once the resin starts to break down and continues to be exposed to the sun, oxygen, and pollutants, it loses its adhesion to the surface and those degraded particles begin to turn white. Chalking is the whitish residue that can become visible on a painted or coated metal surface over time.Īs a panel is exposed to sunlight and UV rays, the paint system’s resin begins to break down and degrade. One of the easiest ways to determine if your roof is degrading is by inspecting if the paint is chalking. #2: Gets rid of the elements stuck on the roof’s surfaceĬommon elements that could get stuck on the surface of a metal roof are:Īs we mentioned, there are chemicals present in certain atmospheres, such as acid rain and pollution particles, that can cause premature degradation of a metal roofing paint system. Luckily, paint systems such as PVDF are durable and engineered to last, but will still benefit from periodic cleaning to keep up the strength of the resin and coating. For a metal roof, periodic cleaning helps maintain the integrity of the panels and helps remove any particles on the surface that could degrade the paint system or even the substrate. Like any household or outdoor item, regular cleaning will extend its life. Why Does a Metal Roof Need to be Cleaned? #1: Extends the life of a metal roof Important considerations to keep in mind before, during, and after cleaning.The methods and tools that should NOT be used to clean a metal roof. ![]()
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