The Clean
Blog

Illinois winters are tough on exterior surfaces. Road salt, sand, ice melt chemicals, and months of freeze-thaw cycles leave behind a layer of grime that most homeowners don't notice until the snow melts — and even then, they often underestimate how much has built up.

What Winter Does to Your Property

Salt and sand from roads and sidewalks get tracked onto driveways and walkways, working their way into the surface of concrete. Over time, this accelerates cracking and surface erosion. Meanwhile, moisture trapped under dead leaves and debris on your deck creates the perfect environment for mold and mildew to take hold over winter.

Why Spring Timing Matters

• Salt residue is still fresh and easier to remove before it's baked in by summer heat
• Mold and algae colonies are smaller and easier to treat in early spring
• You'll enjoy a clean property all summer rather than waiting until fall
• Spring cleaning prepares decks and siding for staining or painting season

What to Prioritize First

Start with your driveway — it takes the most winter abuse. Then move to siding and walkways. If you have a deck you want to stain or seal this summer, get it cleaned first so the surface is properly prepped.

In the Champaign-Urbana area, we typically recommend scheduling your spring wash between late April and early June — after the last frost but before the summer heat sets in.

One of the most common questions we get is: "How often should I have my driveway cleaned?" The honest answer depends on a few factors — but most homeowners in central Illinois should be cleaning their concrete at least once a year.

The Recommended Schedule

• Once a year minimum — for most standard residential driveways
• Twice a year — if you have trees nearby dropping sap or leaves, or park vehicles that drip oil
• After major weather events — particularly after a heavy salt season or flooding

Signs Your Driveway Needs Cleaning Now

• Visible green or black staining (algae/mold)
• Oil stains that have darkened the surface
• A generally gray or dingy appearance compared to when it was new
• Buildup along the edges near grass or garden beds

Why Waiting Costs More

The longer you wait, the deeper stains penetrate into the concrete. What could be removed with a single cleaning may require full concrete restoration treatment if left for years. Regular maintenance is almost always cheaper than reactive deep cleaning.

Not every surface should be hit with high-pressure water. Using the wrong method can damage siding, strip paint, or force water into places it shouldn't go. Understanding the difference between soft washing and pressure washing helps you make the right call for your home.

Pressure Washing

High-pressure water (typically 1,500–4,000 PSI) used to blast debris off hard, durable surfaces like concrete, brick, and stone. It's fast and effective for driveways, patios, and sidewalks.

Soft Washing

Low-pressure water (under 500 PSI) combined with biodegradable cleaning solutions to gently remove mold, algae, mildew, and dirt. The chemistry does the work, not the pressure. It's the right choice for siding, roofing, painted surfaces, and wood.

Which Does Your Home Need?

• Concrete/brick driveway: Pressure wash
• Vinyl or wood siding: Soft wash
• Deck: Low-pressure wash with appropriate cleaner
• Sidewalks and walkways: Pressure wash
• House exterior (full): Soft wash

At CU Pressure Bros, we assess each surface before we start and always use the right method — so you get great results without any damage.

Every spring, homeowners break out the stain or sealer to refresh their deck — and every spring, many of them skip the most important step: cleaning it first. Staining over a dirty or moldy surface is one of the most common deck maintenance mistakes, and it leads to finishes that peel, bubble, or look uneven within a season.

Why Cleaning First Matters

• Stain and sealer can't properly bond to a surface that has mold, mildew, or old finish buildup
• Dirt and grime trapped under a new coat will eventually push through
• A cleaned and brightened surface absorbs stain more evenly
• You'll get a finish that lasts 2–3x longer

The Right Process

Clean the deck thoroughly using an appropriate low-pressure wash and deck cleaner. Allow it to dry completely — usually 48–72 hours — before applying any stain or sealant. If the wood has grayed or looks dull, a wood brightener after cleaning can restore the natural tone.

We offer deck cleaning services specifically designed to prep your surface for staining season. Get it done right the first time.

If you've noticed dark vertical streaks running down your siding — especially below the roofline or gutters — you're looking at algae, mold, or a combination of both. It's one of the most common exterior issues we see on homes in the Champaign-Urbana area, and it's almost never just dirt.

What's Actually Happening

Gloeocapsa magma is a type of blue-green algae that feeds on the limestone filler in asphalt shingles. As rain washes it off the roof, it runs down your siding and leaves those characteristic dark streaks. Mold and mildew thrive in the same moist conditions.

Why a Garden Hose Won't Fix It

Algae and mold attach to surfaces at a biological level — you can't rinse them away. High pressure alone doesn't kill the organisms either, it just spreads them. The right solution is a soft wash treatment with a biodegradable biocide that kills the growth at the root.

Long-Term Prevention

• Keep gutters clean so water isn't constantly running down siding
• Trim trees and shrubs away from the home to improve airflow and sunlight
• Schedule a soft wash every 1–2 years to stay ahead of growth

Driveway replacement is expensive — often $5,000 to $15,000 or more depending on size. Before you commit to that cost, it's worth knowing whether professional restoration could give you comparable results for a fraction of the price.

When Restoration Is the Right Call

• Surface-level staining, discoloration, or graying from age
• Minor surface scaling or pitting from salt exposure
• Oil stains, rust marks, or organic staining
• Dull or faded appearance that cleaning alone can't fix

When You Probably Need Replacement

• Deep structural cracks or heaving from tree roots or frost
• Large sections that are crumbling or separating
• Drainage problems causing water to pool or run toward the foundation

What We Do

Our concrete restoration service involves deep cleaning, stain treatment, and surface conditioning to restore the look and integrity of your concrete. In many cases, a restored driveway looks better than a new pour — because new concrete takes years to reach that clean, bright white look.

We'll give you an honest assessment. If restoration can solve the problem, we'll tell you. If you genuinely need replacement, we'll tell you that too.

Spring gets all the attention when it comes to exterior cleaning, and for good reason — winter leaves a mess. But fall is actually an underrated time to pressure wash, and for Champaign-Urbana homeowners, it can be the smarter choice.

What Fall Cleaning Prevents

Leaves, seed pods, and wet debris that sit on your deck, walkway, or driveway over winter become a breeding ground for mold and staining. By the time spring arrives, those stains have had months to set in. A fall cleaning removes the organic matter before it has a chance to do damage.

Best Fall Cleaning Candidates

• Decks — clean before winter moisture causes mold to set in
• Driveways — remove summer oil drips before freeze-thaw cycles grind them in deeper
• Siding — a fall wash means you start winter with a clean exterior and won't need emergency work in spring
• Gutters and downspout areas — remove leaf buildup that's been running down your siding all fall

In central Illinois, late September through October tends to have ideal conditions: mild temps, lower humidity, and fewer insects. It's our second busiest season for good reason.

If you're thinking about selling your home — or just want to protect your investment — exterior cleaning is one of the highest-ROI improvements you can make. Realtors consistently rank curb appeal among the top factors in a buyer's first impression, and a clean exterior signals a well-maintained home.

What the Numbers Say

Studies from real estate associations suggest that professional exterior cleaning can increase perceived home value by 2–5%, and in some markets more. On a $300,000 home, that's $6,000–$15,000 in perceived value for a service that costs a fraction of that.

What to Clean Before Listing

• Driveway and walkways — first thing buyers see
• House exterior and siding — makes the home look newer
• Deck or patio — buyers imagine themselves using it
• Fencing and retaining walls — often overlooked but very visible

We regularly work with homeowners preparing to list. Many of our customers report positive feedback from their realtors and buyers specifically about the home's exterior condition. A clean property photographs better, shows better, and sells faster.

Walk into any hardware store and you'll find pressure washer rentals for $60–$80 a day. At first glance, it seems like the obvious choice over hiring a professional service. But once you factor in the full picture, the equation changes significantly.

What You're Getting With a Rental

• A consumer-grade machine (1,500–2,000 PSI) — pros use 3,000–4,000 PSI commercial equipment
• No surface cleaner attachment, so you'll get uneven "tiger striping" on driveways
• No cleaning solutions or downstream injection for soft wash applications
• No experience knowing what pressure is safe for which surface

The Hidden Costs

Beyond the rental fee: you're paying for your time (typically 4–6 hours for a driveway and siding), the risk of damaging siding or etching concrete with too much pressure, and the cost of any cleaning chemicals you buy separately. Damage from improper pressure washing can cost hundreds to thousands to repair.

When DIY Makes Sense

Honestly? For small jobs — rinsing off a patio table, hosing down a small porch — a consumer washer works fine. But for driveways, siding, decks, and house exteriors, the difference in results between a rental and a professional is significant enough that most homeowners who try it once end up calling us the next time.

Your trash bins go out every week. They sit in the sun, collect bacteria, grow mold, and develop odors that a garden hose rinse barely touches. In summer, they become a serious hygiene issue — and an open invitation to pests.

What's Actually in Your Trash Can

Studies of residential trash bins have found E. coli, salmonella, listeria, and various mold strains inside unclean bins. These aren't just odor problems — they're health hazards, especially if bins are stored near your garage, door, or anywhere children play.

Why a Rinse Isn't Enough

• Bacteria and mold bond to plastic surfaces and require high-pressure cleaning to dislodge
• Hot water (which we use) kills bacteria more effectively than a cold garden hose
• Biodegradable sanitizing solution is needed to fully neutralize odor-causing bacteria

Bundle and Save

Trash can cleaning pairs perfectly with a driveway or walkway cleaning — we're already on-site with the equipment, and it takes only a few extra minutes. Most customers bundle it with other services for the best value.