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How Roof Moss Affects Your Homeowners Insurance in Washington State – and What To Do About It

Roof moss may seem harmless at first, but in Washington State’s damp climate, it can quickly become a major issue for homeowners. Not only can moss damage your roof, but it may also impact your homeowners insurance. Insurance companies are increasingly using drones to inspect homes, making it easier than ever for them to spot roof problems. Let’s break down how moss affects your insurance, why it’s a threat to your roof’s health, and how regular professional maintenance can keep your home protected. Understanding Roof Moss and Its Impact Moss thrives in Washington’s wet, overcast environment. It typically grows on shaded areas of roofs where moisture lingers, leading to thick green patches. While it may look harmless or even picturesque, moss can trap moisture, damage shingles, and lead to roof leaks. When left unchecked, moss can deteriorate roofing materials, weakening the structure of your roof and contributing to premature wear and tear. These issues not only reduce the lifespan of your roof but also increase the risk of expensive repairs. How Roof Moss Affects Homeowners Insurance Insurance companies view roof moss as a sign of neglect. A moss-covered roof indicates a lack of maintenance, which poses a higher risk of claims related to water damage or roof failure. As a result, insurers may raise your premiums, exclude roof damage from your policy, or even cancel your coverage. If your roof is in poor condition due to moss growth, an insurance company may require proof of repairs or professional cleaning before issuing or renewing your policy. Staying proactive with roof maintenance is key to keeping your coverage intact and avoiding costly surprises. Drones: The Modern Tool for Roof Inspections To streamline the inspection process, many insurance companies are turning to drone technology. Drones offer a safer, faster, and more accurate way to assess roof conditions without the need for adjusters to climb onto your roof. High-resolution drone cameras capture detailed images that can easily reveal moss growth, damaged shingles, or signs of water intrusion. With drones, insurers can conduct inspections remotely, making it harder for homeowners to hide roof damage. This means even minor moss growth could be flagged, potentially leading to increased premiums or policy changes. Why Moss Is So Detrimental to Roof Health Moss may seem like a minor inconvenience, but it can cause serious damage to your roof. Here’s how: The Solution: Regular Professional Roof Maintenance The best way to prevent moss from affecting your roof and homeowners insurance is through regular professional maintenance. Here’s why it’s a worthwhile investment: Final Thoughts Roof moss is a common challenge for homeowners in Washington State, but it doesn’t have to threaten your insurance coverage or the integrity of your home. By signing up for a DAPrDAN Home Care Plan, you can ensure your roof receives the professional care it needs year-round. With regular cleanings, inspections, and preventative treatments, you’ll keep moss at bay, protect your roof, and maintain your insurance coverage. Contact DAPrDAN today to learn more about how our comprehensive Home Care Plan can safeguard your home and provide you with peace of mind.

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Technical Bulletin – RE: Algae Discoloration of Roofs

For many years, roof discoloration caused by algae has been observed throughout the United States and Canada. this is commonly referred to as “fungus growth.” The discoloration usually has a brown to black appearance, and may be mistaken for soot, dirt moss, or tree droppings. The primary species of algae being observed is Gloeocapsa Magma. This type of algae is contrained in and transported through the air, and tends to collect and grow upon roofing structures. Natural pigments produced by this algae may cause a white or light colored roof to gradually turn dark brown, or black. The algae discolorations should not be confused with moss or tree droppings , which typically product only localized discolorations. This type of roof discoloration has been most widespread in the Gulf States and along the Northwest and Eastern Seaboards. It is not, however, confined to only these regions, Algae growth occurs to varying degrees in all regions of the country, especially those subjected to warm, humid conditions. It should be noted that almost all types of roofing systems are susceptible to algae discoloration. It is, of course, most readily visible upon white, or pastel roofs, while it is not so visible upon darker shades of roofing. Algae discolorations are difficult to remove from roofing surfaces, but may be lightened by applying a solution of chlorine bleach, trisodium phosphate, and water. Solutions for these ingredients may vary between shingle manufacturers and depend on the amount of discoloration. Solutions range from one cup TSP, one gallon bleach and five gallons of water, to one cup TSP and 2.5 gallons each or bleach and water. First, gently disperse this solution on the roofing surface. Use normal precautions for handling bleach. Be sure to apply it carefully to avoid damage to other parts of the building and its surrounding landscape. avoid scrubbing the surface, as this friction may loosen and remove granules. If possible, always work from a ladder and/or walk boards to avoid direct contact with the roof surface. Observe all possible safety precautions when working on, or near the roof. Finally, rinse the solution from the roof by gently spraying the surface with water. Be warned that this solution application and rinse process will make the roof surface slippery and potentially hazardous to walk on during treatment. The effectiveness of such cleaning techniques are only temporary, and discoloration will likely recur. However, several types of algae resistant roofing products have been developed, and are now commercially available. These asphalt roofing products are specifically designed to inhibit algae growth for extended periods of time. CAUTION!High pressure washing systems for algae removal should not be used. DISCLAIMER OF LIABILITY: this document was prepared by the Asphalt Roofing Manufacturers Association and is disseminated for informational purposes only. Nothing contained herein is intended to revoke or change the requirements, or specifications of the individual roofing material manufacturers or local state and federal building officials that have jurisdiction in your area. Any question, or inquiry, as to the requirements or specifications of a manufacturer, should be directed to the roofing manufacturer concerned. THE USER IS RESPONSIBLE FOR ASSURING COMPLIANCE WITH ALL APPLICABLE LAWS AND REGULATIONS. From the Asphalt Roofing Manufacturers Association, 750 National Press Building, 529 14th Street, NW, Washington, DC 20045 Get a FREE Instant Quote to clean your roof from DAPrDAN.

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