Consult the manufacturer’s instructions on your moss-killing solution-you may need to wait for the roof to dry to apply it.Move slowly and carefully, since a wet roof can be slippery. With a long-handled brush, gently scrub to remove the bulk of the moss.Using your hose’s spray nozzle, spray loose moss off the roof, starting at the peak and moving downward.If you’re using a roof safety kit, follow the manufacturer’s instructions to anchor the brackets to the roof and attach the rope to the harness.If your ladder won’t attach to the roof, have another adult hold the sides when you climb up and down. Set up your extension ladder on level ground with the base of the ladder about 3 feet away from the roof’s edge.Put your supplies in a bag or a backpack so you can keep both hands free for climbing on and off the roof. Direct sunlight can cause cleaning solutions to evaporate before they have time to kill moss. Moss removal is best done when the weather is warm but cloudy.If you plan to spend significant time on your roof, you can purchase a personal fall arrest kit that includes a harness, safety rope, and roof anchor.įollow these steps to clean moss from your roof. It’s difficult to properly apply the chemical solution without getting up on the roof, which means that there’s a fall risk. įinally, it’s important to take ladder and roof safety seriously. Keep in mind that bleach is deadly to most plants, so you’ll need to cover nearby bushes and flower beds with plastic sheeting. You can mix your own solution by combining 1 to 3 cups of chlorine bleach, a bit of dish soap, and 2 gallons of water. Commercial pre-mixed moss killer is available as both a dry powder and a liquid. You’ll need some kind of cleaning solution, which you can make or buy. You’re better off using a hose and a soft-bristled scrub brush than a pressure washer. The pressure blasts away granules and weakens roofing materials. Pressure washing may remove moss, but it will also damage shingles. It’s worth noting that we recommend using the low pressure of a garden hose -rather than a pressure washer. Most homeowners probably have the tools needed to combat a moss problem on hand. Because it spreads quickly, it’s important to clean moss away as soon as you find it.īefore you start the process of roof moss removal, you’ll need to gather your tools and materials and take a few safety precautions. In gutters and downspouts, moss can create blockages, sending water over the gutter edges and down to pool by the home’s foundation, potentially causing water damage. Over time, moss buildup widens fissures and gaps in these materials and traps moisture against the roof. That’s why you usually find moss growing on roofs in shaded areas where water isn’t able to evaporate quickly.Īlthough some think moss growth on a shingle roof creates a charming, cottage-like appearance, it actually damages asphalt shingles and other roofing materials. Together they nourish the plant and encourage it to spread. Two factors contribute to moss buildup on roofs: water and organic debris. It reproduces using spores that are spread through the air and water. Moss is a small, rootless plant that grows in sheets. Roof moss is generally green and can be found between and beneath shingle tabs. It frequently grows on tree-shaded or north-facing roof surfaces where moisture isn’t able to drain away or evaporate. Moss is a type of dense plant growth that is most prevalent in damp or shady areas. We’ll walk you through the moss removal process step-by-step and show you how to keep it from coming back. To extend your roof’s life span and put off the cost of a new roof as long as possible, you should remove moss as soon as you identify it. Some people may find the look of a moss covered roof picturesque, but over time, moss can cause roofing materials to degrade because it traps moisture which may cause damage to decking and joists. Moss can spring up between shingles on roofs in damp climates or under thick tree cover. However, when you buy something through our retail links, we may earn an affiliate commission. Affiliate Disclaimer: All products and services featured are independently selected by our editors.
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