Roof Washing in Wilmette, IL
Soft washing for asphalt shingles and cedar shake in Wilmette. Lake humidity, North Shore Channel, and Tree City canopy — soft wash only, every time.
Roof Washing for Wilmette Homes
Wilmette's lake humidity, North Shore Channel moisture, and Tree City USA canopy accelerate algae on roofs throughout the village. Soft wash only — safe for all roofing types.
Asphalt Shingle Soft Wash
Removes black algae streaks and moss without damaging granule layer. Soft washing only — the manufacturer-recommended method.
Cedar Shake Soft Wash
Gentle cleaning for cedar shake roofs on Wilmette's larger properties. Mold and grey weathering removed completely.
Waterproof Seal for Cedar
Penetrating sealant after washing. Essential given Wilmette's lake and channel humidity.
Black Streak Removal
Gloeocapsa magma algae thrives in Wilmette's tree canopy shade and lake humidity. Soft washing removes it completely.
Moss Removal
Common on north-facing sections throughout Wilmette. Soft washing kills moss at the root and the waterproof seal slows return.
Gutter Combo
Combine with gutter cleaning — roof wash residue should be cleared from gutters immediately after washing.
Tree City + Lake Michigan + North Shore Channel = Persistent Algae.
Wilmette combines three algae accelerators: Tree City USA canopy that shades rooflines from April through November, Lake Michigan proximity that adds east-side humidity, and the North Shore Channel that adds west-side moisture. Virtually every Wilmette roofline experiences at least one of these factors year-round.
Canopy Shade Accelerates Algae
Tree City USA canopy keeps Wilmette rooflines shaded and moist. Black algae streaks typically establish within 4–6 years on shaded sections of new roofs. Regular soft washing every 3–5 years controls the cycle.
Lake & Channel Humidity
East Wilmette homes face lake humidity from Gillson Beach. West Wilmette homes near the North Shore Channel face canal moisture. Both accelerate algae growth on rooflines in their respective areas.
Warranty-Safe Method
Soft washing is the manufacturer-approved method for all major shingle brands. High pressure voids warranties. We never use high pressure on any Wilmette roofline.
Free Assessment
Roof type and algae coverage noted. Written quote.
Property Protection
Landscaping protected before solution application.
Soft Wash Application
Low-pressure biodegradable solution. No high pressure.
Cedar Seal (if applicable)
Applied immediately after washing on cedar surfaces.
"Asphalt roof between Sheridan Road and the lake. Lake humidity causes algae constantly. Soft washing removes everything. Will do every 3 years going forward."
"Cedar shake in western Wilmette near the channel. After washing and sealing the colour came back beautifully. Excellent expertise."
"Soft wash only — the right approach. Every other company I called mentioned pressure washing. These guys know what they're doing."
Roof Washing Across Wilmette
We provide roof soft washing throughout Wilmette — from asphalt shingle roofs on Cape Cods and colonials to cedar shake on larger East Wilmette properties. The combination of Tree City canopy shade, lake humidity, and North Shore Channel moisture makes regular soft washing every 3–5 years the appropriate maintenance cycle for most Wilmette homes.
Combining with our gutter cleaning service in the same visit is the most efficient approach for complete exterior roof care.
Every 3–5 years for asphalt shingles. Cedar shake every 2–3 years. Lake-proximate East Wilmette homes may benefit from the shorter end of the cycle.
Yes — manufacturer-approved. High-pressure washing voids warranties; soft washing preserves them.
Yes — and we recommend it. Roof wash residue flows into gutters; cleaning them the same visit is the most efficient approach.
Yes — East Wilmette near the lake, West Wilmette near the channel, and all of the village.
Discounts & Savings
Senior, military & first-time customer discounts on all services.
Senior Discount
Homeowners 65+ receive 5% off. Mention when requesting your estimate.
Military Discount
Active duty, veterans & first responders. Thank you for your service.
First-Time Customer? Save 5%
Northbrook & North Shore
Don't see your city? Call us — we very likely cover it.
Request a Free Quote in Wilmette
No obligation. Clear written estimate before any work begins.