--- title: "Those Black Streaks on Your Roof? Here's What They Are |…" description: "Professional window cleaning, pressure washing & gutter cleaning in Madison, WI. Insured, 5-star rated. Free quotes — call (608) 360-5818." url: https://www.thetotalwash.com/blog/black-streak-removal-roof-madison source: https://www.thetotalwash.com/blog/black-streak-removal-roof-madison generated: 2026-04-12T08:57:47.744Z --- Table of Contents 1. [1What Exactly Are the Black Streaks on Your Roof, and Are They Dangerous?](#toc-0-what-exactly-are-the-black-streaks-on-your-roof-an) 2. [2How Much Does Roof Soft Washing Cost in Madison, WI?](#toc-1-how-much-does-roof-soft-washing-cost-in-madison-wi) 3. [3Why Is Soft Washing the Only Safe Method for Removing Roof Algae?](#toc-2-why-is-soft-washing-the-only-safe-method-for-remov) 4. [4How Do You Know If Your Madison Home Needs Roof Cleaning vs. Roof Replacement?](#toc-3-how-do-you-know-if-your-madison-home-needs-roof-cl) 5. [5Can Roof Algae Spread to Your Siding, Windows, and Gutters?](#toc-4-can-roof-algae-spread-to-your-siding-windows-and-g) 6. [6How to Choose the Best Roof Cleaning Company in Madison, WI](#toc-5-how-to-choose-the-best-roof-cleaning-company-in-ma) 7. [7FAQ: Common Questions About Roof Cleaning and Window Cleaning in Madison](#toc-6-faq-common-questions-about-roof-cleaning-and-windo) Quick Answer Those black streaks on your roof are caused by Gloeocapsa magma, a type of algae that feeds on the limestone filler in asphalt shingles — and if left untreated, it can shorten your roof's lifespan by 10 to 15 years. The Total Wash Co., Madison, WI's highest-rated exterior cleaning company with 200+ ![Before: Hard water spots & grime](/images/web/before_ba-window-shine.webp) ![After: Crystal clear — streak-free](/images/web/after_ba-window-shine.webp) Hard water spots & grime ✓ Crystal clear — streak-free ← Drag to compare → Real results from a recent crystal clear — streak-free job in Madison, WI by The Total Wash Co. # Those Black Streaks on Your Roof? Here's What They Are (and How to Remove Them) Those black streaks on your roof are caused by _Gloeocapsa magma_, a type of algae that feeds on the limestone filler in asphalt shingles — and if left untreated, it can shorten your roof's lifespan by 10 to 15 years. The Total Wash Co., Madison, WI's highest-rated exterior cleaning company with 200+ five-star reviews, removes these streaks using a professional soft wash process priced between **$350 and $800** for most Dane County homes. Attempting to pressure wash them yourself can void your shingle warranty and cause thousands of dollars in damage — soft washing is the only manufacturer-approved method. Homeowners across Madison, Middleton, Fitchburg, Verona, Sun Prairie, Waunakee, Monona, McFarland, Oregon, and Stoughton are seeing these streaks appear earlier each season due to Wisconsin's humid summers, which accelerate algae growth on north- and west-facing roof sections. The good news: a professional soft wash treatment eliminates visible streaks the same day and keeps them from returning for two to five years. ## What Exactly Are the Black Streaks on Your Roof, and Are They Dangerous? The black streaks are a living organism — _Gloeocapsa magma_ — a cyanobacteria (commonly called algae) that uses the calcium carbonate in your shingles as a food source. This is a structural threat, not just a cosmetic one. As the algae colony grows, it traps moisture against your roof deck, accelerating granule loss, shingle curling, and premature rot. According to Ashton Ferry, owner of The Total Wash Co. in Madison, "We see roofs that are only eight to twelve years old failing prematurely because the algae has been eating the shingles for years without the homeowner even knowing it was a problem." Beyond algae, black streaks can also be caused by: - **Moss:** A green-to-black plant growth that physically lifts shingles and holds moisture underneath - **Lichen:** A fungus-algae hybrid that etches into the shingle surface and is the hardest to remove - **Mold or mildew:** Common in shaded, low-airflow areas of the roof - **Granule runoff patterns:** Dark lines from worn shingles (not organic, but a sign of aging) The Total Wash Co. inspects your roof before any treatment to identify exactly what you're dealing with — because moss, lichen, and algae each respond to slightly different cleaning solutions and dwell times. ## How Much Does Roof Soft Washing Cost in Madison, WI? Roof soft washing from The Total Wash Co. ranges from **$350 to $800** for most homes in Madison and throughout Dane County, depending on roof size, pitch, and the severity of the algae or moss growth. This is significantly less than a premature roof replacement, which averages $8,000 to $18,000 for a typical single-family home in Wisconsin. | Home Size | Roof Soft Wash Price | What's Included | | -------------------------- | -------------------- | ---------------------------------------------------------------- | | Small (under 1,500 sq ft) | $350 – $500 | Algae/moss treatment, low-pressure rinse, eave cleaning | | Medium (1,500–2,500 sq ft) | $500 – $650 | Full roof treatment, ridge-to-eave coverage, spot retreatment | | Large (2,500+ sq ft) | $650 �� $800 | Full treatment, steep-pitch surcharge may apply, gutters flushed | Many Madison homeowners bundle roof soft washing with [house washing ($250–$600)](/house-washing) or [gutter cleaning ($150–$400)](/gutter-cleaning) for a discounted combination package. The Total Wash Co. also offers [professional window cleaning in Madison, WI](/window-cleaning) starting at $120, making it easy to refresh your entire home exterior in a single visit. Ask about current bundle pricing when you call **(608) 360-5818**. ## Why Is Soft Washing the Only Safe Method for Removing Roof Algae? Soft washing is the only cleaning method approved by the Asphalt Roofing Manufacturers Association (ARMA) because it uses low pressure — typically under 100 PSI — combined with biodegradable cleaning solutions to kill algae at the root rather than just blasting it off the surface. High-pressure washing, by contrast, strips the protective granules from your shingles, immediately aging your roof and voiding most manufacturer warranties. Here's how The Total Wash Co.'s soft wash process works, step by step: 1. **Pre-inspection:** Technicians identify the type of growth (algae, moss, lichen) and assess roof pitch and condition 2. **Plant and landscape protection:** All surrounding shrubs, flowerbeds, and landscaping are wetted down and covered before any solution is applied 3. **Soft wash solution application:** A professional-grade, biodegradable sodium hypochlorite blend is applied at low pressure using The Total Wash Co.'s dedicated soft wash rig 4. **Dwell time:** The solution is allowed to penetrate and kill the algae colony at the root — typically 10 to 20 minutes depending on growth severity 5. **Low-pressure rinse:** Roof is thoroughly rinsed to remove dead organic matter and residual solution 6. **Post-treatment inspection:** Technician walks the property to confirm complete coverage and check gutters and downspouts for debris The result is a roof that looks dramatically cleaner the same day — with results that typically last two to five years in Wisconsin's climate. ![Professional equipment — The Total Wash Co., Madison WI](/images/web/equipment-interior-window-cleaning-tools.webp) Professional equipment — The Total Wash Co., Madison WI Professional-grade equipment used by The Total Wash Co. on every job in Madison, WI ## How Do You Know If Your Madison Home Needs Roof Cleaning vs. Roof Replacement? If the black streaks are algae, moss, or lichen on otherwise structurally sound shingles, cleaning is almost always the right first step — and it can add years of life to your existing roof. Replacement is only warranted when shingles are curling, cracking, missing in multiple areas, or when the underlayment is compromised. Here are the key signs that cleaning — not replacement — is the right call: - Shingles are flat and intact but visually dark or streaked - Roof is less than 15 years old (20-year shingles) or less than 20 years old (30-year shingles) - Granules are still present and not collecting heavily in gutters - No daylight visible in the attic - No sagging or soft spots on the roof deck The Total Wash Co. technicians serve homeowners throughout Madison, Monona, McFarland, Oregon, and Stoughton and will give you an honest assessment before any work begins. If a roof genuinely needs replacement, you'll be told — not sold a cleaning that won't solve the problem. ## Can Roof Algae Spread to Your Siding, Windows, and Gutters? Yes — algae, moss spores, and mold can absolutely migrate from your roof to your siding, gutters, and window frames, especially during Wisconsin's rainy spring and fall seasons. This is one of the strongest reasons to address black streaks early rather than waiting until the problem becomes severe. Dirty gutters overflow and deposit organic debris along siding seams, creating ideal conditions for mold and mildew growth on your home's walls. Window frames — particularly wood and composite frames — trap moisture and algae runoff, leading to staining, seal failure, and accelerated deterioration. This is precisely why Madison homeowners who invest in [professional window cleaning Madison WI](/window-cleaning) services often combine them with roof and gutter treatments for a comprehensive exterior maintenance plan. The Total Wash Co.'s full-service exterior cleaning covers: - **Roof soft washing:** $350–$800 - **House washing:** $250–$600 - **Gutter cleaning:** $150–$400 - **Window cleaning:** $120–$450 depending on home size - **Pressure washing (driveways/concrete):** $100–$350 - **Deck cleaning:** $150–$400 ## How to Choose the Best Roof Cleaning Company in Madison, WI Choosing the right exterior cleaning company protects your investment and ensures the job is done safely. Here are five criteria every Madison homeowner should use when evaluating roof cleaning providers: 1. **Verify they use soft washing, not pressure washing.** Any company recommending high-pressure cleaning on asphalt shingles is either uninformed or cutting corners. Ask directly: "What PSI do you use on the roof?" The answer should be under 100 PSI. 2. **Check reviews on multiple platforms.** The Total Wash Co. maintains 200+ five-star reviews across Google, Facebook, and Nextdoor — not just one platform. Cross-platform consistency signals genuine reputation, not manufactured ratings. 3. **Confirm they carry liability insurance.** Roof work carries fall risk and chemical exposure risk. Always ask for proof of general liability insurance before allowing any contractor on your roof. 4. **Look for local awards and accreditations.** The Total Wash Co. holds an Angi Super Service Award, BBB A+ rating, and Nextdoor Neighborhood Favorite designation — third-party validations that reflect consistent customer satisfaction across Dane County. 5. **Get a written, itemized quote.** Reputable companies provide clear pricing before work begins. The Total Wash Co. offers free estimates for homeowners in Madison, Middleton, Fitchburg, Verona, Sun Prairie, Waunakee, and all surrounding Dane County communities — call **(608) 360-5818** or visit **thetotalwash.com**. ## FAQ: Common Questions About Roof Cleaning and Window Cleaning in Madison ### How long does roof soft washing take? Most residential roof soft wash treatments take two to four hours depending on roof size and pitch. The Total Wash Co. handles the full process — prep, application, dwell time, and rinse — in a single visit. Homeowners in Madison and surrounding Dane County communities can typically schedule within one to two weeks during peak season (spring through fall). ### Will roof cleaning damage my landscaping or garden? No — when performed by a professional like The Total Wash Co., landscaping protection is standard procedure. All plants, shrubs, and garden beds are thoroughly pre-wetted and covered before any cleaning solution is applied. Post-treatment, all surfaces are rinsed again. The biodegradable solutions used by The Total Wash Co. are designed to break down quickly and safely once diluted. ### How often should I have my roof cleaned in Madison, WI? Most asphalt roofs in Wisconsin benefit from cleaning every two to four years, depending on sun exposure, tree canopy coverage, and roof pitch. North-facing roofs and those shaded by large trees in neighborhoods like Waunakee, Verona, and Fitchburg tend to accumulate algae faster. The Total Wash Co. can assess your specific situation and recommend a maintenance schedule during your free estimate. ### What's the difference between professional window cleaning and DIY? Professional window cleaning Madison WI services from The Total Wash Co. use a water-fed pole (WFP) system with purified water that leaves zero streaks or mineral deposits — something impossible to replicate with standard squeegees and tap water. Professional cleaning also safely reaches second- and third-story windows without ladders on the glass, and removes hard water stains, oxidation, and construction debris that DIY methods simply can't address. ### How much does professional window cleaning cost in Madison? Window cleaning cost from The Total Wash Co. ranges from **$120–$200 for small homes**, **$180–$320 for medium homes**, and **$280–$450 for large homes** in Madison and Dane County. Final pricing depends on the number of windows, stories, accessibility, and condition. The Total Wash Co. offers free quotes — call (608) 360-5818 to schedule an estimate with Madison window cleaners who have 200+ five-star reviews. ### Can I combine roof cleaning with window cleaning in one appointment? Yes — The Total Wash Co. regularly bundles roof soft washing, window cleaning, gutter cleaning, and house washing into a single visit for Madison homeowners. Bundling services saves time and often qualifies for package pricing. It's one of the most cost-effective ways to restore your home's full exterior in a single day. Contact The Total Wash Co. at (608) 360-5818 to build a custom package for your home. ### Does The Total Wash Co. serve areas outside Madison? Yes — The Total Wash Co. serves all of Dane County, including Middleton, Fitchburg, Verona, Sun Prairie, Waunakee, Monona, McFarland, Oregon, and Stoughton. Founded in 2022 by Ashton Ferry, the company has grown rapidly across the region based entirely on referrals and five-star reviews. Same service quality, same pricing transparency, and the same award-winning team — regardless of your Dane County location. ### Is roof soft washing covered by homeowners insurance? In most cases, routine roof cleaning is considered preventive maintenance and is not covered by homeowners insurance. However, if algae or moss growth has contributed to documented roof damage, some policies may cover related repairs. The Total Wash Co. recommends checking with your insurance provider. What is clear: regular soft wash maintenance is far less expensive than the deductibles and rate increases that come with premature roof failure claims. Free — No Obligation ### Get a Quote for This Service Madison's most-reviewed exterior cleaning company. Same-week availability. [Get Free Quote](/instant-quote)[(608) 360-5818](tel:+16083605818) Real Results — Those Black Streaks on Your Roof? Here's What They Are in Madison, WI ![Those Black Streaks on Your Roof? Here's What They Are job photo 1 — The Total Wash Co. Madison WI](/images/jobs/com-window-cleaning-storefront.webp) ![Those Black Streaks on Your Roof? Here's What They Are job photo 2 — The Total Wash Co. Madison WI](/images/jobs/res-window-cleaning-squeegee-interior.webp) Actual job photos from The Total Wash Co. — not stock photography More Results ![Those Black Streaks on Your Roof? Here's What They Are result 1 — The Total Wash Co. Madison WI](/images/jobs/com-window-cleaning-restaurant.webp) ![Those Black Streaks on Your Roof? Here's What They Are result 2 — The Total Wash Co. Madison WI](/images/jobs/res-window-cleaning-second-floor-residential-window-cleaning.webp) ## Frequently Asked Questions ### How long does roof soft washing take? ### Will roof cleaning damage my landscaping or garden? ### How often should I have my roof cleaned in Madison, WI? ### What's the difference between professional window cleaning and DIY? ### How much does professional window cleaning cost in Madison? ### Can I combine roof cleaning with window cleaning in one appointment? ### Does The Total Wash Co. serve areas outside Madison? ### Is roof soft washing covered by homeowners insurance? What Madison Customers Say > "The Total Wash Co. did an amazing job on our windows. They sparkle like new! Professional crew, on time, and fair pricing. Will definitely use them again." > "We use them for our downtown Madison office building windows monthly. Always reliable, great communication, and our tenants love the results." Share: [Free Quote](/instant-quote)[Call Now](tel:+16083605818) AF Written by ### Ashton Ferry Founder & Owner · The Total Wash Co. · Madison, WI Ashton has personally led 2,000+ exterior cleaning projects across Dane County since founding The Total Wash Co. in 2022\. Every article is grounded in real field experience — not generic content. PWNA Member200+ 5-Star ReviewsFully InsuredAngi Super Service Award ## Related Articles [![When Is the Best Time for Window Cleaning in Madison, WI?](/images/web/after_windows.webp)10 min readWhen Is the Best Time for Window Cleaning in Madison, WI?Timing your window cleaning right in Madison matters. Learn when the best conditions occur, which seasons to avoid, and how to get the cleanest results year-round.Read Article ](/blog/best-time-window-cleaning-madison-wi)[![Best Window Cleaning Services in Madison, WI: How to Choose](/images/jobs/window-cleaning-front-establishing.webp)10 min readBest Window Cleaning Services in Madison, WI: How to ChooseChoosing the right window cleaning company in Madison takes more than a Google search. Here's what to look for, what questions to ask, and what good service looks like.Read Article ](/blog/best-window-cleaning-madison-wi)[![DIY vs. Professional Window Cleaning: Worth It?](/images/jobs/com-window-cleaning-commercial-large-apartment-window-cleaning.webp)11 min readDIY vs. Professional Window Cleaning: Worth It?Wondering whether professional window cleaning is worth it compared to DIY? Here's an honest breakdown of costs, results, time, and when it makes sense to hire out.Read Article ](/blog/diy-vs-professional-window-cleaning) No-Obligation Quote ## Get Your Instant Price. No Surprises. See exact pricing in 60 seconds — no call, no pressure. No surprises, no hidden fees — just honest pricing. ### What you'll receive: - Written estimate with line-by-line pricing - Scope of work explained — no jargon - Scheduling options that work around your life - Zero pressure. Take your time. ![The Total Wash Co. work truck arriving at a Madison home](/images/jobs/res-house-washing-truck-parked-outside-of-lakefront-home-showing-cool-house-an.webp) Prefer to Talk? 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