By Aaron Koszyk — Owner, Double A Power Washing LLC · 6 min read
If you walk outside right now and scrape your fingernail along your north-facing siding, you will likely peel up a thick, greasy layer of green algae.
Here in Granger, especially around neighborhoods like Knollwood or down near the St. Joseph River, the heavy summer humidity turns our homes into breeding grounds for mold and mildew. Our crew has spent years cleaning properties throughout Mishawaka, Granger, South Bend, Elkhart, and just over the line in Edwardsburg, and we see the same mistake made every single season. Homeowners grab a high-pressure rental unit thinking brute force is the only way to clean their property, only to end up with shredded window screens, ruined vinyl siding, and water blasted deep behind their walls.
Quick Answer: The best method depends on the surface: power washing is best for hard surfaces like concrete, while soft washing is best for delicate siding and roofs. For Michiana homes, high pressure can damage vinyl siding, whereas soft washing uses gentle pressure and detergents to safely kill algae at the root.
Key Takeaways
- High pressure power washing should only be used on hard surfaces like concrete and aged brick.
- Soft washing uses low pressure and specialized detergents to sanitize surfaces and kill organic spores.
- Using high pressure on vinyl siding or roofs can cause permanent water damage, mold, and leaks.
- Soft washing keeps your home clean longer by killing the root of algae instead of just blasting the surface.
In This Article
The Core Differences Explained
When most people think about cleaning their home’s exterior, they picture a roaring gas engine blasting water at thousands of pounds per square inch. While that brutal force has its place, it is often the worst possible tool for delicate home surfaces. Power washing relies entirely on mechanical force—specifically water pressurized between 1,300 and 4,000 PSI—to strip away dirt. Soft washing, on the other hand, relies on chemistry rather than raw force, utilizing high-volume water flowing at a gentle 500 PSI or less combined with specialized, eco-friendly detergents.
Understanding the difference between raw mechanical force and chemical sanitization is the key to protecting your home from costly damage. Our team at Double A Power Washing uses custom-built soft wash systems that deliver a gentle, wide fan spray to treat your surfaces rather than blast them. Whether we are working on a cozy ranch in Granger or a commercial building in South Bend, choosing the right method is our top priority. We adjust our techniques based on the specific material we are cleaning, ensuring your home gets a safe, deep, and lasting clean.
When to Use High-Pressure Power Washing
High pressure is a highly effective tool, but only when applied to the right materials. We reserve our heavy-duty pressure washing equipment for solid, non-porous surfaces that can handle the impact without cracking, splitting, or eroding. This primarily means concrete surfaces like your driveway, sidewalk, or backyard patio that have accumulated years of ground-in dirt, tire marks, and oil stains from summer road trips.
You should only use high-pressure power washing on hard, durable surfaces like concrete that is at least three years old and certain types of brick. Applying 3,000 PSI to fresh concrete can easily strip away the top cream coat, leaving behind permanent, unsightly scarring. When we perform professional concrete cleaning in the Michiana area, we combine our high-pressure surface cleaners with pre-treatments to lift deep oil stains and eliminate dark discoloration. This high-force method is also excellent for preparing commercial masonry or tackling stubborn grease on heavy machinery, but it must never be allowed near your home’s siding.
Pro Tip: Always check the manufacturer’s warranty on your vinyl siding or asphalt shingles, as using high pressure can completely void your coverage.

Why Soft Washing is Vital for Siding and Roofs
Your vinyl siding and asphalt roof shingles are designed to shed rain, not withstand a localized hurricane. When homeowners try to use high pressure to clean these areas, they often blast water directly behind the siding panels, which leads to trapped moisture and hidden mold colonies inside the walls. Soft washing solves this problem entirely by using a gentle flow of water that is no stronger than a garden hose, paired with a specialized blend of sodium hypochlorite and biodegradable soaps.
Our professional house washing method kills organic growth at its microscopic roots rather than just shearing off the top layer. This means the green algae, black mold, and mildew that plague homes near Granger’s wooded lots are actually sanitized and destroyed. This chemical action keeps your siding looking cleaner for up to three times longer than pressure washing alone. The same rule applies to your roof shingles, where high pressure will instantly strip away the protective UV granules, completely ruining your roof’s lifespan. Our specialized roof & gutter cleaning services rely 100% on this low-pressure, soft wash approach to keep your shingles intact.
Ready for a free, no-pressure estimate?
Call or text one of our exterior cleaning specialists, or request your quote online anytime.
Call: 574-221-8400Text: 574-221-8400
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The Dangers of DIY Pressure Washing
Every summer, we get frantic calls from homeowners in Granger and Elkhart who tried to tackle their own exterior cleaning over the weekend. The typical story involves renting a pressure washer from a big-box store, climbing up a shaky ladder, and instantly blowing a hole through a vinyl siding panel or shattering a double-pane window. High-pressure water can easily slice through skin, tear up window screens, and destroy expensive wood decks in a matter of seconds.
Attempting to pressure wash your home yourself carries a high risk of personal injury and thousands of dollars in property damage. Even if you manage to avoid immediate physical damage, DIY cleaning often leaves microscopic mold spores behind, meaning the green haze will return to your siding in just a few short weeks. Furthermore, using too much pressure on delicate wooden features will splinter the soft grain, ruining your deck or fence permanently. To avoid these headaches, our team provides gentle wood cleaning services that restore the natural beauty of your outdoor living spaces without damaging the wood fibers.
DIY vs. Hiring a Pro
| Factor | DIY / Rental | Double A Power Washing |
|---|---|---|
| Upfront cost | Cheap rental fee plus fuel | Professional service with flat rate |
| Time required | Hours of exhausting weekend labor | Completed quickly while you relax |
| Risk of damage | High risk of siding and roof damage | Zero risk with trained crew |
| Equipment used | Low-grade retail or rental units | Commercial-grade soft wash systems |
| How long results last | Algae returns in a few months | Keeps surfaces clean much longer |
Pro Tip: To verify if an exterior cleaning contractor is truly soft washing, watch their equipment; if they are climbing ladders with a short wand and a loud gas engine to wash your siding, they are using dangerous high pressure.
Local Care for Michiana Homes
The climate here in Northern Indiana and Southwest Michigan presents unique challenges for local homeowners. Our warm, humid summers followed by freezing winters create the perfect environment for mold, algae, and moss to thrive on our properties. From the quiet streets of Edwardsburg to the bustling commercial corridors of Mishawaka, every building faces constant environmental wear and tear.
Investing in professional, local soft washing services is the best way to preserve your property’s curb appeal and prevent premature material decay. At Double A Power Washing, we customize our cleaning solutions based on the specific type of organic growth present on your property. Whether we are performing high-pressure commercial power washing on a storefront or a gentle soft wash on a lakeside home, we bring the right tools, training, and local expertise to every single job. We understand how local weather affects your home, and we know exactly how to keep it looking pristine through every season.

Why Choose Double A Power Washing?
When you choose Double A Power Washing, you are hiring a dedicated local team that treats your property with the utmost respect and care.
- We are fully insured and PWNA certified to ensure professional standards.
- Our company proudly maintains an A+ rating with the Better Business Bureau (BBB).
- We utilize professional, commercial-grade soft washing and power washing systems.
- Our cleaning solutions are highly effective, eco-friendly, and safe for your family and pets.
What Our Customers Say
“I was extremely pleased with Aaron and the service I received from Double A Powerwashing. From first contact with a prompt, professional response to packing up and leaving it was seamless and exceeded my expectations. I also had Aaron clean my gutters.”
— Julie Kowalenko, Google Review
Frequently Asked Questions
What is the difference between power washing and pressure washing?
Power washing and pressure washing both use high-pressure water, but power washing specifically utilizes heated water to cut through tough grease, oil, and grime. Pressure washing relies on cold water at high pressure, while soft washing uses low pressure and specialized detergents.
Will soft washing kill my landscaping or garden plants?
No, our crew takes extensive precautions to protect your plants. We pre-wet all surrounding vegetation, apply our gentle detergents carefully, and thoroughly rinse the landscaping afterward to ensure your plants remain healthy and safe.
How often should I have my Granger home soft washed?
We generally recommend having your home soft washed once a year, preferably during the late spring or summer. This schedule prevents the buildup of damaging organic growth like mold and algae, keeping your siding looking brand new.
Is soft washing safe for older historic homes?
Yes, soft washing is the absolute safest method for older, historic properties. Because it uses water pressure no stronger than a garden hose, it will not damage delicate historic wood, aged brick, or fragile mortar.
Can soft washing remove black streaks on my roof?
Yes, those black streaks are actually a type of algae called Gloeocapsa magma, which feeds on the limestone filler in your shingles. Our specialized soft wash roof cleaning process completely sanitizes and removes these streaks without damaging the shingles.
Ready to restore your home’s curb appeal and protect your valuable surfaces this summer? Contact the local team at Double A Power Washing today by calling or texting us at 574-221-8400 to schedule your free, no-obligation estimate and experience the difference of a professional clean.
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