
Professional exterior cleaning company serving Madison, WI and the greater Dane County area. Whether you need window washing for your home, pressure washing for your driveway, or soft washing for your siding, we cover Madison and nearby communities including Middleton, Sun Prairie, Fitchburg, Verona, and Waunakee.
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Growing up and working around the lakes and rivers of central Wisconsin gives you a different perspective on what moisture does to a home. At Gunderson Soft Wash Services, based in Mauston, WI, we have watched algae, mold, and mildew take hold on lakefront properties, wooded cabins, and shaded homes for years. That firsthand experience is what separates us from a company that simply owns a pressure washer.
We travel to homeowners and commercial property owners across Madison, Sun Prairie, Middleton, Fitchburg, Verona, and Waunakee, bringing that expertise with us on every job. Madison property owners along Lake Monona and Lake Mendota know better than most how relentless moisture and humidity can be on siding, roofs, docks, and concrete surfaces, and we are the team that knows how to handle it. Madison's Isthmus sets a standard. Nestled between Lake Monona and Lake Mendota, it is one of the most visually distinct stretches of city in the entire Midwest, and the properties along it deserve exteriors that reflect that. Whether it is a home entrance on the east side or a commercial storefront on the Capitol Square, the condition of your exterior surfaces says something about the property behind them. Make sure it is saying the right thing.
We work with a wide range of residential and commercial clients throughout Dane County, including gas stations, car dealerships, restaurants, apartment complexes, retail storefronts, hotels, and healthcare facilities. If your building faces the public every day, its appearance speaks before anyone walks through the door. The dense rental properties, high foot traffic, and packed parking lots surrounding the University of Wisconsin campus create exactly the kind of grime buildup and surface staining that our pressure washing and soft washing services are built to eliminate.
We specialize in roof soft washing, house washing, driveway pressure washing, deck cleaning, window washing, gutter cleaning, parking lot washing, and concrete surface cleaning. Whatever your exterior is up against, whether it is black streaks across your shingles, green film on your siding, grease buildup on a service bay apron, or stubborn staining on your storefront concrete, we use the right cleaning solutions and the right pressure for the job.
Left untreated, algae, mold, and mildew do not just hurt your curb appeal, they break down your surfaces over time and turn a routine cleaning into a costly repair.
Free quotes, fast responses, and flexible scheduling on every project!

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Preserve the curb appeal of your Madison home against the unique challenges of the Four Lakes region, where humidity and seasonal shifts often lead to unsightly organic buildup. Our professional soft wash treatment offers a sophisticated alternative to harsh high-pressure washing, using a specialized low-pressure technique designed to protect the integrity of everything from historic brick in Vilas to modern siding in Middleton. our biodegradable solution penetrates and neutralizes the spores of moss, mildew, and "lake-effect" algae at their source. This thorough approach ensures your property maintains its pristine finish long after the job is done, providing a deep clean that stands up to the unpredictable Wisconsin weather.
Refresh your Madison property with a deep clean that cuts through the stubborn road salt, oil, and "Isthmus grime" that settles in over time. We use professional-grade pressure washing to blast away the grit a garden hose can’t touch, reaching deep into the pores of your concrete and stone. From busy storefronts to backyard patios, we strip away the gray to reveal the original finish of your masonry, making your home or business the sharpest on the block.
Those dark, ugly streaks on your Madison roof aren't just dirt—they’re a living bacteria called Gloeocapsa magma that’s literally eating your shingles. In our humid Four Lakes climate, this growth thrives on the limestone in your roof, quietly cutting its lifespan in half.
While a standard pressure washer is too aggressive and can strip away your shingles' protective granules (often voiding your warranty), we use a low-pressure soft-wash instead. It’s a gentle, chemical-based treatment that kills the infestation at the root, restoring your roof’s "day-one" look and saving you from the massive cost of a premature replacement.
Ditch the basic "hose down" and give your Madison driveway the attention it deserves. Between humid Wisconsin summers and messy winters, slippery algae and oil stains can quickly take over your home’s entrance. We use professional-grade surface cleaners to pull out deep-seated grime that standard washing leaves behind, restoring that "just-poured" look to your concrete or pavers. Don't settle for a gray, weathered driveway—elevate your curb appeal with a deep clean that actually lasts.
Don’t let a weathered deck hold your backyard back. While high-pressure washing is our go-to for concrete and stone, wood requires a much more tailored touch. We use a specialized low-pressure restoration designed specifically for Madison’s decks, safely clearing away silvered fibers and UV damage without splintering the grain.
Whether you’re prepping for a fresh stain or just getting ready for grilling season, we strip away the "gray" to reveal the rich, natural warmth underneath. It’s the best way to protect your wood’s integrity while turning your outdoor space back into the neighborhood’s favorite hangout.
First impressions are everything, and a grimy storefront is a silent deal-breaker for potential customers. We help Madison businesses stand out with commercial-grade exterior cleaning that targets the tough stuff—exhaust soot, stubborn gum, and urban pollutants that dull your building's professional look.
By scheduling our deep-cleaning around your off-hours, we ensure your facade and entryways keep that "grand opening" polish without interrupting your foot traffic. Whether you’re on the busy Square or in a quiet neighborhood strip, we'll keep your entrance looking pristine and inviting every single day.
1 (608) 548-1975 | Call for a free quote today!
There is a reason most homeowners draw the line at certain DIY projects. Pressure washing and soft washing look straightforward until you are dealing with the wrong chemical mix on a shingle roof or too much pressure on a painted surface. The equipment matters, the chemistry matters, and knowing how to read a surface before you touch it matters just as much as either one.
Think of it this way. You would not hand your spouse's expensive haircut off to someone without the training, the tools, or the experience to do it right, no matter how confident they were going in. A home is no different. When you have invested hundreds of thousands of dollars into a property, the people cleaning your roof, washing your driveway, or soft washing your siding should know exactly what they are doing before they start.
That is what we bring to every job. Professional-grade equipment, the right cleaning solutions for every surface type, and the experience to know the difference between a surface that needs soft washing and one that needs pressure washing. No guesswork, no damage, and no do-overs.
Hand Picked Tools & Techniques.
Not every surface on your property should be cleaned the same way, and treating them like they should is one of the most common mistakes in the industry. High pressure on a roof tears up shingles and voids warranties. Low pressure on a greasy driveway or oil-stained concrete barely moves the needle. Knowing the difference, and having the right equipment to act on it, is what separates a professional result from an expensive mistake.
At Gunderson Soft Wash Services, we match the cleaning method to the material every single time. Soft wash nozzles and low-pressure cleaning solutions for your siding, roof, and other surfaces where protecting the finish is just as important as removing the grime. Industrial-grade surface cleaners for your driveways, walkways, and concrete where embedded dirt, oil, and salt buildup needs something with real force behind it. Every tool we use is chosen with the longevity of your home in mind, not just how fast we can get the job done.
Advanced Chemistry vs. Aggressive Chemicals.
There is a big difference between a cleaning solution that works and one that works without causing damage in the process. A lot of companies lean hard on bleach-heavy mixes because they are cheap and fast, but over time that approach is corrosive to your home's hardware, rough on surrounding plant life, and not something you want running off into your yard or landscaping repeatedly.
We use biodegradable surfactants that break down dirt, kill bacteria, and eliminate fungal spores at the source without relying on caustic acids or harsh chemicals to get the job done. Think of it as cleaning that works from the inside out, loosening and lifting contaminants at a microscopic level rather than just blasting the surface and hoping for the best. The result is a deeper, longer-lasting clean that does not come at the expense of your hardware, your garden beds, or the ground your kids and pets walk on.
Professional strength does not have to mean environmentally reckless. Ours never does.
Years of Clean in a Single Treatment.
A good exterior cleaning should do more than look great the day we leave. Because our soft washing process kills algae, bacteria, and fungal spores at the root rather than just pushing them around with high pressure, the results last considerably longer than what you get from a standard wash. Most homeowners see a clean, streak-free exterior for anywhere from 24 to 36 months before needing a follow-up treatment.
Lakefront and waterfront properties are a different story, and we know that better than anyone working out of central Wisconsin. Constant moisture, heavy algae pressure, and organic buildup from the water create a tougher environment than a typical suburban home faces. Results on those properties typically range from 12 to 36 months depending on sun exposure, wind direction, and how close the structure sits to the water. We factor all of that in before we ever start a job.
Either way, the goal is the same. Fewer cleanings over time, better results between them, and a home that holds its curb appeal through whatever Wisconsin decides to throw at it.
Insured:
Hiring an exterior cleaning company should not feel like a gamble, but for a lot of homeowners it does. Budget contractors who show up without proper insurance are more common than most people realize, and when something goes wrong on your property, that problem becomes yours to deal with. We think that is unacceptable.
Every job Gunderson Soft Wash Services takes on is backed by comprehensive, industry-specific liability insurance from the moment we pull up to the moment we pack up and leave. That means your roof, your siding, your landscaping, and your property are protected throughout the entire process, not just on paper but in practice. No crossed fingers, no fine print, and no out-of-pocket surprises if something unexpected happens.
You spent a significant amount of money on your home. The company cleaning it should take that seriously. We do.
Madison is famously built on an isthmus between Lake Mendota and Lake Monona — a glacial landscape shaped by retreating ice sheets over 10,000 years ago that left behind the chain of four lakes the Ho-Chunk Nation called Teejop, the Land of Four Lakes. That proximity to open water is one of Madison's defining qualities, and it also means that lakeside neighborhoods and properties within the urban core experience elevated ambient moisture levels throughout the warmer months. Algae and mold establish quickly on north-facing roofs and shaded siding in this environment.
Madison's residential fabric spans from Victorian-era homes near the isthmus and historic neighborhoods like Marquette and Schenk-Atwood to newer construction on the far east, west, and south sides. Older homes with wood siding, aging asphalt shingles, and brick masonry require careful, surface-appropriate cleaning — not pressure washing that can drive moisture into the structure or strip old paint. Soft washing is our default approach for these surfaces and delivers dramatically longer-lasting results.
For commercial property owners and property managers throughout Madison — from State Street to East Washington Avenue to the Verona Road corridor — exterior appearance matters to customers, tenants, and passersby. We serve commercial clients across Dane County with building washing, storefront cleaning, parking and concrete pressure washing, and recurring maintenance contracts tailored to your property's needs.