Roof Cleaning
Black streaks, algae, and moss don't just look bad — they shorten your roof's lifespan. We remove them safely.
The Problem
Northeast Ohio's humidity, shade, and seasonal moisture create ideal conditions for Gloeocapsa magma (the algae that causes black streaks), moss, and lichen growth on asphalt shingles. Left untreated, these organisms trap moisture against the shingle surface, accelerate granule loss, and can reduce your roof's effective lifespan by years. Many homeowners either ignore the problem or risk damage by hiring someone who uses high-pressure washing — which voids most shingle warranties.
Our Solution
LumoExteriors uses a low-pressure soft wash technique specifically designed for roofs. Our cleaning solution kills algae, moss, and lichen at the root without high pressure that can damage shingles, lift edges, or void manufacturer warranties. The result is a roof that looks years younger — and lasts longer.
Benefits
- Remove black streaks, algae, moss, and lichen safely
- Extend the lifespan of your asphalt shingles
- Restore your roof's original appearance and curb appeal
- Low-pressure method protects shingles and preserves warranties
- Prevent moisture damage caused by organic growth
- Before-and-after photo documentation included
Frequently Asked Questions
Is roof cleaning safe for asphalt shingles?
Yes. We use a low-pressure soft wash method recommended by shingle manufacturers like GAF and CertainTeed. High-pressure washing is never used on roofs — it damages shingles and voids warranties.
What are the black streaks on my roof?
Those dark streaks are caused by Gloeocapsa magma, an airborne algae that feeds on the limestone filler in asphalt shingles. It's cosmetic at first but traps moisture over time, accelerating shingle deterioration.
How often should a roof be cleaned?
In Northeast Ohio, every 2–3 years is typical for homes with moderate shade. Homes surrounded by heavy tree canopy or with north-facing roof planes may benefit from more frequent treatment.
Will roof cleaning damage my landscaping?
Our crews take precautions to protect landscaping, including pre-wetting plants and rinsing surrounding areas after treatment. The cleaning solutions we use are designed to be safe for vegetation when properly applied.
How long does roof cleaning take?
Most residential roofs can be completed in 2–4 hours depending on size, pitch, and the extent of organic growth. Results are often visible immediately, with full effect developing over the following days as treated organisms break down.
Included in your membership.
Roof cleaning is available as an add-on service for all membership tiers at member pricing. Contact us for a custom quote based on your roof size and condition.
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