Roof Cleaning (Soft Wash)

Those ugly black streaks running down your roof are not dirt and they will not wash off in the rain. They are living algae — and the only safe way to remove them is a gentle soft wash. For 36+ years, Adams Power Shower has been carefully cleaning asphalt-shingle, tile and metal roofs across St. Louis and St. Charles, restoring curb appeal without ever putting high pressure on your shingles.

Our soft-wash roof cleaning lifts away the organic growth that stains roofs and shortens their life. Using a low-pressure application of professional cleaning solution, we safely treat and rinse:

That algae is not just an eyesore — it feeds on the limestone filler in your shingles and holds moisture against the roof. Left alone, it leads to premature granule loss, rot in the decking below, and a roof that ages years faster than it should. A roof is one of the most expensive parts of your home, so protecting it pays off.

A proper soft wash stops that damage in its tracks. Removing the growth extends the life of your roof, restores curb appeal in a single visit, and prevents moisture damage from moss and lichen working under your shingles. Whether you are selling, refreshing a tired-looking home, or simply want your roof to last as long as possible, soft washing is the smart, low-risk choice — and it costs a fraction of a replacement.

A soft wash brings a roof back to the color it is supposed to be. Take a look at the results we deliver for homeowners across the St. Louis and St. Charles metro — click any photo to enlarge.

Every roof is different, so we never quote a one-size-fits-all number. A few things determine the cost of cleaning yours:

Every estimate is free and customized to your roof. We will look at your home, listen to what you need, and give you an honest, no-pressure price — with no surprises. Backed by a $2 million liability policy and licensed in both St. Charles and St. Louis counties, you can trust the number we give you.

No — high pressure should never touch your roof. The force blasts off the protective granules that shield your shingles from the sun, which voids most warranties and dramatically shortens the life of the roof. That is exactly why we use soft washing only: a gentle, low-pressure application of cleaning solution that does all the work without the risk.

Those dark streaks are a blue-green algae called Gloeocapsa magma. It is airborne, settles on roofs, and feeds on the limestone filler in asphalt shingles — which is why the staining usually shows up first on shaded, north-facing slopes. It will not rinse off in the rain, but our soft-wash treatment kills it at the root and rinses it clean.

Done correctly, no — soft washing is the method roofing manufacturers actually recommend. The Asphalt Roofing Manufacturers Association (ARMA) advises low-pressure cleaning with the proper solution, never high pressure. Because we soft wash only and never blast your shingles, your warranty stays intact and your roof stays protected.

Get a free, no-pressure estimate from a 36-year, fully insured, family- & veteran-owned team. Call (314) 220-9274 or request your quote online.