Ever wonder why some driveways sparkle after pressure washing, while others still look tired and patchy?
It’s not just about water pressure. What you put down before pressure washing can make all the difference—especially here in Canada, where weather, salt, and seasonal dirt create stubborn build-up.
Whether you’re cleaning a walkway, deck, or siding, pre-treatment is the real game-changer. It loosens grime, kills mold, and reduces the need for harsh pressure that can damage surfaces.
Think of it as prepping your surface to clean smarter, not harder.
For seniors—or families helping aging parents—doing this yourself can be time-consuming, even risky.
That’s why many Canadians, especially homeowners and senior folks and families in Ontario, now trust Custodia Home Management.
Our experts handle the heavy lifting so you can enjoy peace of mind, a cleaner home, and more free time. From driveway degreasers to deck-safe detergents, this guide explains everything you should put down before pressure washing—and why it matters.
Why Pre-Treatment Matters
Pressure washing without pre-treatment is like scrubbing a pan without soaking it first—it just takes longer and wears you out. In many Ontario homes, stubborn stains, salt buildup, and mildew cling tight after long winters.
That’s where pre-treatment steps in. It saves you time, protects surfaces, and makes results shine—literally.
Here’s why pre-treating before pressure washing is a game-changer:
- Loosens deep-seated grime: Breaks down grease, dirt, and stains before the water even hits—making cleaning effortless.
- Prevents damage: Reduces the need for high pressure, protecting wood, vinyl, and stone from cracking or splintering.
- Saves hours of effort: Cleaning becomes faster, with fewer passes needed to get results.
- Targets tough stains: Removes mold, algae, oil, and efflorescence common in Ontario’s seasonal climate.
Need it done right? Contact Custodia Home Management and free your weekend.
How Do You Prep A Surface For Pressure Washing?
Not all outdoor surfaces are created equal—especially in Ontario’s harsh, shifting climate. From salty driveways to weathered decks, each material requires the right pre-treatment to avoid damage and get lasting results.
Here’s how to treat each surface with expert care.
- Concrete and Driveways
These surfaces are prone to oil stains, tire marks, and mildew buildup. A powerful degreaser breaks down thick grime, while a diluted bleach rinse (or sodium hypochlorite) kills mold and bacteria before pressure washing.
Always let the solution sit for at least 10–15 minutes to penetrate deep into the surface.
- Wooden Decks and Fences
Organic growth and sun damage are common here. Using wood-safe detergents or oxygen bleach cleaners helps lift stains without harming the wood fibers.
Always avoid high pressure on wood—it can splinter or gouge the surface. Let the wood dry fully before sealing or staining to protect against future wear.
- Vinyl Siding
Mold, algae, and discoloration are common problems, especially in shaded areas. Gentle house-wash solutions formulated for vinyl siding clean effectively without stripping color or damaging the panels.
Rinse nearby plants first and never spray upward—water can get behind the siding and cause hidden issues.
- Patios and Pavers
Weeds, moss, and algae thrive in the joints between pavers. Apply a weed killer a few days beforehand, then clean with a paver-safe detergent.
Be mindful not to wash away joint sand—if it happens, refill with polymeric sand for added stability.
[Read: How long does it take to pressure wash a 2000 sq ft house?]
So, Here Is a Rundown of the Top Pre-Treatment Solutions for Pressure Washing
Before you grab the pressure washer, knowing what to put down first makes all the difference—especially if you want to protect your surfaces and enjoy faster, longer-lasting results.
- Degreasers & Detergents
Break down stubborn grease, grime, and surface dirt. Best for driveways and garage floors.
- Alkaline Cleaners
Specifically target oil-based stains. A go-to for high-traffic areas.
- Acidic Cleaners
Great for removing salt, mineral deposits, and efflorescence on brick and pavers.
- Bleach (Sodium Hypochlorite)
Highly effective for killing mold, algae, and mildew. Perfect for siding and decks.
- Enzyme & Bacterial Cleaners
A smart, eco-friendly choice for homes with kids, pets, or gardens nearby.
So, next time you’re wondering what you should put down before pressure washing, let this list guide you.
Pressure Washing Tips — Safety Precautions Before Pressure Washing
Safety should never be an afterthought. Keep these essential precautions in mind:
- Wear protective clothing: Always use gloves, goggles, and sturdy footwear to shield yourself from chemicals and high-pressure water.
- Test cleaners first: Apply the cleaning solution on a small, hidden area to ensure it won’t damage your surface.
- Protect nearby plants and surfaces: Cover or rinse plants and delicate materials to prevent chemical burns or staining.
- Ensure proper ventilation: When using strong chemical cleaners, work in well-ventilated areas to avoid harmful fumes.
Why Hiring Custodia Experts Makes Sense
Pressure washing may seem easy, but the risks of DIY can lead to costly damage or injury. Our skilled team understands Ontario’s unique weather and surfaces.
We protect your home while saving you time and stress, letting you focus on what matters most: spending quality moments with your family in a clean, safe environment.