Roof Cleaning Harrison, MI — Safe Soft Wash Treatment for Mid-Michigan Roofs
If you’ve noticed dark black or greenish streaks running down your Harrison roof, you’re looking at Gloeocapsa Magma — a type of cyanobacteria (algae) that feeds on the limestone filler in your asphalt shingles. It’s not just an eyesore. Left untreated, this organism actively degrades your shingles, accelerating granule loss and reducing the lifespan of your roof by years — sometimes decades.
Harrison’s lakeside environment makes this problem especially common. The humidity from Clare County’s 28-plus lakes creates near-ideal conditions for algae and lichen growth on rooftops. North-facing and shaded roof sections are the most vulnerable, but algae spreads — what starts as a small patch can cover an entire roof within a few seasons.
Michigan Power Washing Pros uses the ARMA (Asphalt Roofing Manufacturers Association) recommended soft wash method for all roof cleaning in Harrison, MI. This means low-pressure application of professional cleaning chemistry — never high-pressure washing that blows off granules and voids shingle warranties. The results are complete, visible, and long-lasting.
What We Clean
• Asphalt and fiberglass shingles
• Metal roofing panels and standing seam roofs
• Tile and clay roofing
• Cedar shake and wood shingles
• Flat and low-slope commercial roofing
• Algae, lichen, and moss removal
• Black streak (Gloeocapsa Magma) elimination
• Gutter exterior cleaning included with roof service
100% Satisfaction Guaranteed
Trained & Experienced
Licensed & Insured
Excellent Warranties
Top-Notch Communication
Flexible Scheduling
Why Harrison Chooses Michigan Power Washing Pros
Michigan Power Washing Pros is a locally owned Clare County business — not a national franchise. Our owner-operated model means you deal directly with the people doing the work, and our 100% satisfaction guarantee means we stand behind every job we take on.
- 80+ five-star reviews from real mid-Michigan customers
- Locally owned and operated — based right here in Clare County
- 100% satisfaction guarantee on every job
- Licensed and insured for residential and commercial work
- Eco-friendly, biodegradable cleaning solutions
- Upfront transparent pricing with no surprise charges
Questions & Answers
About Roof Cleaning
Yes. The ARMA-recommended soft wash method uses water pressure far below what could damage shingles or dislodge granules. It’s safe for asphalt, fiberglass, metal, tile, and cedar shake roofing — and it does not void shingle manufacturer warranties the way pressure washing does.
Most residential roofs in the Harrison area take 2–3 hours from setup to rinse. Larger homes or roofs with extensive lichen coverage may take longer. We provide a realistic time estimate before scheduling. Roofs with moss and lichen take more time to come clean. Our process treats and kills the organic growth. From there, Lichen and Moss will disintegrate, detach and come off your roof over time. Forcing detachment is not ideal as this causes premature wear and damages your roof.
Over time, yes — algae is airborne and will eventually recolonize any roof in Mid-Michigan. However, our post-treatment algae inhibitor significantly slows regrowth. Most Harrison homeowners find that treated roofs stay clean for 2–4 years depending on tree coverage and exposure.
For most applications, our soft wash system can be operated from ladders at the roofline without walking on the roof surface. For certain roof pitches and layouts, minimal roof access may be necessary — our team is fully trained and insured for safe roof work.
Yes. Lichen is more stubborn than algae because it physically bonds to shingle granules at the root level. Our professional cleaning chemistry is formulated specifically to kill and break down Lichen and Moss’s bond without damaging the shingle surface. Our treatment process for Lichen and Moss kills the growth. From there, it takes time for it to detach and come off of your roof. This can take 2 weeks to a few months depending on level of growth. We guarantee our work. So if it hasn’t detached, we will come back, re-treat and monitor your roof to ensure it is completely free of roof damaging organic growth.
Absolutely and we wouldn’t have it any other way. Our dedication is to you and your properties roof being treated, cleaned and free of organic growth. We want to ensure that your roofs cleaned from damaging organic growth and in compliance with your property’s insurance.
