The Best Roof Cleaning and Moss Removal Company in Portland, OR

A moss-covered roof, left untreated, is unsightly. What’s more, it compromises the roof’s integrity, degrading shingles, and shortens the roof lifespan overall by holding in moisture and causing leaks and molds. You and your roof deserve better.

There are several different ways to clean roofs. We may use the hand-brush method, soft-wash method, or the hand-brush and soft-wash methods combined on asphalt shingle roofs, depending on the age of the roof, type of moss, as well as the desired results. On presidential, architectural, and three tab asphalt shingles, we use both the hand-brush and soft-wash methods combined. We brush the larger clumps of moss off the roof, then apply a roof detergent to kill the remaining stubborn moss, algae, and lichen, and wash it completely off. A thorough cleanup follows – all done on the same day.

A hand-brush only service is also an option if you are trying to preserve the integrity of the roof or save money, and instant or thorough results are not a priority. Since there is no detergent or water involved, the results with this method are less impressive since the roof-staining-algae, or stubborn sprigs of moss can’t be simply brushed off.

Soft-Wash vs. Pressure Wash

Pressure washing composition roofs can wash off granules, cause leaks and remove years off the life of your roof. The pressure to water volume ratio of standard pressure washing cleans with a low water volume, but with a very high pressure; it’s chiseling off the grime (and granules) as you clean, which works well for concrete surfaces, but not for asphalt or composition roofs.

Moss Busters uses the soft-wash method. The roof moss is first killed and loosened with a detergent, then washed off with large amounts of water volume, but at a lower pressure.

Tile Roof Cleaning

For tile roof cleaning, we use a roof surface cleaner, or a high volume, twin rotary nozzle setup. Hand brushing is also an option, but the results are not as dramatic. We also wash metal roofs and most cedar shake.

Why Use Moss Busters?

Our reviews and before-and-after photos speak for themselves. When comparing quotes, be sure to compare apples to apples. Ask about the methods used and their guarantee – different companies will use different techniques with different results. Read reviews on third-party websites like BBB, Angie’s List and Yelp to research the company’s reputation.

As always, safety is the top priority, and we take it very seriously. Our robust OSHA approved system allows uncompromised safety and at the same time our harnesses and rope set ups are flexible for any roof pitch. Most of the equipment we use is derived from the mountain climbing industry. The the boots we wear are specifically designed for roofers, with soft replaceable rubberized foam soles, to maximize traction and safety, and eliminate shingle abrasion.

In addition, as your go-to Portland roof cleaning company, we also offer moss treatment and prevention options. To learn more, go to the Moss Prevention page.