Wilmington Roofing: Article About How To Clean Roof Stains
Over time, it's inevitable that a roof will acquire stains, and it will therefore begin look a bit more worn down. However, if there is algae or mold growing on the roof in a specific area, it can be indicative of some problems happening underneath the shingles. If a homeowner sees mold growth, they should immediately contact a professional to come and inspect the roof.
After they've inspected the roof, many Wilmington roofing companies will clean the roof for an additional fee. However, roof cleaning can be done as a DIY process that doesn't require the homeowner to climb on top of the roof and scrub it clean. Proper safety practices should be observed during this process.
The first step is to select the proper chemicals. Household bleach is a common technique, but it is ineffective. While it may clean the top layer and lighten stains, it doesn't actually kill the algae, which means the colony will most likely return within a few days or weeks. Lye (sodium hydroxide) is a much more preferable alternative. Lye is more environmentally friendly than bleach, but it is also very corrosive, so gloves and safety gear are required.
The expert roofers at The Roof Maker of Wilmington can assist you with any questions regarding asphalt shingle roofing or roof maintenance.
Once the lye is mixed into the water, use a low setting on a pressure washer to apply it to the roof. Take caution of the angle of spray. If the angle is too steep, then it can dislodge shingles and cause more damage. Also important is choosing a day without wind, not only to prevent the corrosive spray from hitting passerby or other homes, but also to allow it to have some time to soak into the tiles without evaporating too quickly.
Once sprayed, the solution will need to soak in. After fifteen minutes to a half an hour, use the pressure washer to rinse it off, focusing the force of the blast on the most stained areas.
After the roof has been cleaned, contact a company to install copper or zinc strips along the edge of the roof. This will prevent algae regrowth, as the naturally antimicrobial elements of the metal kill any bacteria. There are also sprays that can prevent algae growth. While these only last for three to five years, they can significantly extend the lifespan of a roof.
However, keep in mind that all of these methods and techniques are best done by professionals. Not only do they have the expertise, but they also have the proper equipment to ensure the entire project is successfully completed without damaging the roof any further.