Zinc powder treatment
For roofs that are mostly clean and you want to keep that way.
- Applied once a year
- Slowly dissolves with rain
- Prevents moss and algae from establishing
- No active growth removed — this is maintenance, not a clean
Roofs should never be cleaned with high pressure — it damages shingles, voids warranties, and shortens roof life. We use two methods depending on what your roof actually needs.
For roofs that are mostly clean and you want to keep that way.
For visible moss, algae, or heavy buildup. The deep clean.
Every property is different — pricing is based on size, surfaces, and how much buildup is on the roof. Quotes are free and fast.
Same active ingredient as household bleach, diluted with water to a roof-safe strength. Kills moss, algae, and the black streaks (gloeocapsa magma) at the root.
Helps the solution cling to vertical surfaces instead of running straight off. Plant-safe at our application rates.
We pre-wet your landscaping before, during, and after. Once diluted, the solution drains safely into the ground without harming grass, plants, or pets.
Soft washing uses low pressure and specialized cleaning solutions to safely remove organic growth like moss, algae, and mildew. Unlike traditional pressure washing — which relies on high pressure to blast away dirt — soft washing kills growth at the root so it doesn't come back as quickly. It's the right method for delicate surfaces like roofs, siding, and painted wood.
The main active ingredient is sodium hypochlorite (the same chemical in household bleach), diluted with water and a small amount of soap. The soap helps the solution cling to surfaces instead of running straight off, so the cleaner can actually work.
We take several steps to protect your landscaping. Plants are rinsed before, during, and after the service. Water dilutes the cleaning solution, and once diluted it drains safely into the ground. Pets should stay indoors during the service as a precaution — once the area has been rinsed it's safe again.
Most roofs benefit from a professional cleaning every 1–3 years, depending on shade, nearby trees, and moisture exposure. Regular cleaning prevents moss from damaging shingles and can extend the life of your roof.
Two: a zinc powder treatment for preventive maintenance when there's not much active growth (apply yearly to keep moss from establishing), and a full soft wash with sodium hypochlorite when a roof has visible moss, algae, or heavy buildup. A proper soft wash typically keeps a roof moss-free for 3–5 years.
Never. High pressure damages shingles, voids warranties, and shortens roof life. We use a specialized soft washing process that safely removes moss and algae without harming the roofing material.
We use proper safety equipment and professional techniques — specialized footwear, ladder stabilizers, and fall protection harnesses when needed. In many cases we can treat the roof from ladders or the ground using specialized soft-washing equipment, so we're not on the roof at all.
Asphalt, metal, clay and concrete tile, slate, cedar shake, composite/synthetic shingles, and flat systems like TPO, PVC, and torch-down. Each material needs a slightly different approach — we adjust our process and solutions to clean safely without damaging the roof.
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Send a photo to (360) 230-8759 and we can often quote without a site visit.