![]() ![]() There are a variety of chemicals you can use to kill moss from places like sidewalks and driveways, but most of them are bad for your roof. ![]() You want to avoid eroding the asphalt from the shingles, as this will leave them vulnerable to water damage and UV rays, lowering the lifetime of your roof and potentially voiding your warranty. While it may seem like an excellent way to blast the moss away, the high-pressure stream of water can damage your shingles and the adhesive used to secure them to your roof. DON'T Use a Pressure WasherĪnother method you should avoid is pressure washing. In addition, scrubbing too vigorously can cause the shingles to lift, creating an entry point for moisture. The abrasive bristles of the scrub brush can wear down the asphalt or break off granules, leaving your shingles vulnerable to water damage. Not only will it be difficult to remove all the moss this way, but you could also damage your shingles in the process. ![]() You may be tempted to grab a stiff brush and scrub the stubborn moss away, but this is a bad idea. DON'T Aggressively Scrub Moss from Shingles These methods can damage your shingles or cause other problems. Adequately installed shingles should be sturdy, but they aren't made to withstand vigorous contact. You should avoid a few methods when removing moss from your roof. Methods You Shouldn't Use to Remove Moss from a Roof If you have wood shingles, it can also lead to wood rot. Second, it makes your roof more susceptible to wind damage. First, it creates an entry point for water and moisture, leading to leaks and water damage. The lifting of shingles can cause problems in two ways. In addition to holding moisture against the shingles, moss can lift them as it grows underneath the shingle. Over time with subsequent rainfall, the moss will cause the shingles to deteriorate, leading to leaks and water damage. High humidity or frequent rainfall will accelerate this process. When moss holds moisture against your shingles, it can cause the asphalt to deteriorate and break down. While this may be beneficial in some situations, it's not suitable for your shingles. Rather than using a root system for nutrients and water, moss uses its leaves, meaning it can live on your shingle roof indefinitely. Unlike a sponge, however, moss doesn't release moisture quickly. You may have heard of nature enthusiasts using moss as a natural sponge in a pinch because moss is excellent at absorbing and holding water. Poor drainage can lead to water damage and leaks in your roof. In addition, as the moss decomposes, it can form an acidic solution that will eat away at the asphalt in your shingles.Īnother problem with roof moss is that it can prevent rain and melting snow from draining properly through the gutters. This moisture can cause the shingles to deteriorate and shorten the lifespan of your roofing systems. The main reason moss and algae growth is terrible for shingles is that it can hold moisture against the roof surface. The good news is that moss and moss spores are relatively easy to remove with the right tools and the help of professional roofers. Over time, this can also cause black streaks on your roof and mold growth. Not only will the green roof age your home, but it can also shorten the lifespan of your roof by trapping moisture beneath the roof shingles and causing them to rot, leading to costly home repairs. Moss may seem charming, especially on an old, weathered roof, but it's not something you want to let linger on your shingles, especially if you live in a wet climate or have asphalt shingles. ![]()
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