Prevention Treatment

Stop Moss Before It Starts — Zinc Prevention Treatment

Zinc strips or zinc oxide spray that slowly releases a protective barrier with every rainfall — keeping your roof moss-free for 3–5 years.

(206) 337-4666
3–5 Years Protection Licensed & Insured Free Inspection Mat-Su Valley Locals
Get Your Free Roof Inspection — No Obligation

Fill out the form and we'll reach out within 2 hours to schedule your free on-site inspection.

  • ✓ Free on-site roof inspection
  • ✓ Same-day quotes
  • ✓ Licensed & insured team
How It Works

Zinc: Nature's Moss Barrier

Zinc is naturally toxic to moss, algae, and lichen. When zinc strips are installed near the roof ridge, every rain washes a thin film of zinc oxide down the slope — creating a chemical barrier that prevents spores from taking hold.

  • Works passively with every rainfall — no ongoing maintenance
  • Environmentally safe at the concentrations used
  • Compatible with all roof types including asphalt, metal, and cedar
  • Provides 3–5 years of protection per installation
  • Can be combined with removal/cleaning for maximum effect
  • Installed near the ridge so it's virtually invisible from street level

Two Treatment Options

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Zinc Strip Installation

2-inch galvanized zinc strips installed along the ridge. Rain activates them passively. Lasts 5–7 years before replacement. Best for long-term prevention.

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Zinc Oxide Spray Treatment

Liquid zinc concentrate applied to the entire roof surface. Faster to apply, immediately effective, and ideal when combined with a cleaning service. Lasts 2–4 years.

Benefits

Why Prevention Is Always Cheaper Than Removal

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Lower Long-Term Cost

A one-time zinc treatment costs a fraction of what repeat moss removal services cost over 5 years. Prevent the problem rather than paying to fix it repeatedly.

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Protects Your Roof Warranty

Most shingle manufacturers require regular maintenance to keep warranties valid. A documented zinc treatment and cleaning history is your best protection.

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Extends Roof Lifespan

Roofs that are kept moss-free can outlast moss-covered roofs by 5–10 years. Prevention is one of the highest-ROI home maintenance investments you can make.

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Automatic in Alaska's Rain

In the Mat-Su Valley, it rains enough that zinc strips activate regularly — making Alaska's wet climate an advantage for preventive zinc treatment effectiveness.

Reviews

What Our Customers Say

FAQ

Common Questions

Yes, but we recommend removing existing moss first for best results. We typically bundle moss removal with zinc treatment — the removal clears the surface, then the zinc protects it going forward. We offer combination packages at a better price than booking separately.
At the dilution levels used on residential roofs, zinc wash-off is environmentally safe. Zinc is a naturally occurring element and breaks down in soil quickly. We'll let you know if your property has any specific considerations during the inspection.
Zinc strips are silver/gray colored and installed near the ridge line, which is the highest and least visible part of the roof from street level. On most homes they're barely noticeable. We can show you photos from previous installs if you'd like to see how they look.
No. Zinc strips last 5–7 years. Zinc spray treatments last 2–4 years. We'll include a recommended re-treatment date in your service report so you know exactly when to schedule your next visit — no guessing required.

Protect Your Roof for Years — Not Just Today

Ask about our Spring Special — free zinc treatment included with any removal or cleaning booking this month.

(206) 337-4666