What time of the year is best for roof cleaning?

June 20, 2021

If you're a homeowner in Seattle, you know how important it is to maintain your home's roof. Regular roof cleaning can help prevent damage to your roof and prolong its lifespan. But what's the best time of the year for roof cleaning in Seattle? Let's take a look at what the experts at NW WINDOW & GUTTER  have to say.

According to the team at NW WINDOW & GUTTER, the best time of the year for roof cleaning in Seattle is during the summer months. Here's why:


  1. Dry Weather: Seattle is known for its rainy climate, but during the summer months, the weather tends to be drier and more stable. This makes it an ideal time for roof cleaning, as there's less chance of rain interfering with the process.
  2. Algae and Moss Growth: Algae and moss tend to grow more slowly during the summer months than they do during the fall and winter. This means that if you clean your roof during the summer, it's more likely to stay clean for a longer period of time.
  3. Preparation for Winter: Seattle winters can be harsh, with heavy rain and snow. By cleaning your roof during the summer, you're preparing it for the upcoming winter and helping to prevent damage from moisture buildup.


At NW WINDOW & GUTTER, we offer professional and reliable roof cleaning services year-round, but we highly recommend scheduling your cleaning during the summer months. Our team uses safe and effective cleaning methods to remove dirt, debris, and algae from your roof, leaving it looking like new.

If you're not sure whether it's time for a roof cleaning, our team can provide a thorough inspection and give you recommendations based on the condition of your roof. Don't wait until it's too late – schedule your roof cleaning today to keep your roof in top condition and protect your home for years to come.

Is it OK to pressure wash a roof?

By Tsvetelin Petrov • May 1, 2023
Pressure washing is not recommended for roof cleaning because it can cause damage to the roof's surface. Most roofs are designed to withstand the elements, but they are not designed to handle the high pressure of a pressure washer. Using a pressure washer on a roof can strip off the protective layer of shingles or tiles, which can cause leaks and other damage. It can also dislodge granules on asphalt shingles, which can shorten the life of the shingles. Pressure washing can also force water under the shingles or tiles, which can lead to water damage in the roof decking and insulation. This can cause mold and mildew to grow, which can lead to health problems for you and your family. In addition, pressure washing can be dangerous if not done correctly. It requires climbing on a roof with equipment, which can be hazardous if proper safety precautions are not taken. This is why professional roof cleaning companies in Seattle use low-pressure washing methods, such as soft washing, to clean roofs safely and effectively.

What do professionals use to clean roofs?

By Tsvetelin Petrov • May 1, 2023
Professional roof cleaning companies in Seattle use a variety of methods and tools to clean roofs depending on the type of roof, the level of dirt and debris, and the extent of the staining. Here are some of the common methods and tools that professionals use to clean roofs in the Seattle area: Soft Washing: Soft washing is a method that uses low-pressure water and cleaning solutions to remove dirt, algae, and moss from the roof without causing any damage to the roof's surface. Soft washing is effective in cleaning all types of roofs, including shingle, tile, metal, and flat roofs. Chemical Cleaning: Chemical cleaning involves the use of specific cleaning solutions that are applied to the roof to dissolve the dirt and stains. This method is particularly effective for removing stubborn stains like rust and oil, but it should be performed by a professional to avoid damage to the roof. Manual Cleaning: In some cases, professionals may need to perform manual cleaning of the roof, especially in areas where the dirt and debris are difficult to remove with other methods. This may involve using a scraper, brush, or other specialized tools. Professional roof cleaning companies in Seattle use a combination of these methods to ensure that your roof is thoroughly cleaned and free of dirt, debris, and stains. They also use specialized equipment like ladders, safety harnesses, and cleaning solutions to ensure that the job is done safely and efficiently.