The secret to pressure washing for pressure-treated wood is using the right method, not the most pressure. In Oshkosh, WI, we match the cleaner and pressure to the surface so it comes out clean without damage. For pressure-treated wood, that means low-pressure wash.
How we clean it
Cleaning solution: An oxygen-based or sodium percarbonate wood cleaner, then an oxalic acid brightener.
What to know about cleaning pressure-treated wood
Pressure-treated pine is the most common deck and fence wood. It grays, mildews and gets slippery when wet. A wood cleaner does most of the work, and a brightener afterward restores the wood's color and helps new stain soak in.
Avoid: High pressure and narrow tips, which leave furry, gouged boards and lap marks.
How often: Clean yearly; restain every 2-3 years.
Signs you need pressure washing for pressure-treated wood
- Driveway or walkways look dark, gray or streaky
- Green or black growth in shaded areas and along edges
- Slippery surfaces after rain
- Oil, rust or tire marks you can't scrub out
- You're getting ready to sell, seal or paint
What causes the dirt and stains
- Dirt and pollen that settle into the pores of concrete
- Mold, mildew and algae in damp, shaded spots
- Oil and fluid drips from vehicles
- Rust from sprinklers, furniture and fertilizer
- Tire marks and general foot traffic
Safe steps for homeowners
- Sweep off leaves and loose debris so they don't stain
- Blot fresh oil drips with cat litter or an absorbent right away
- Point sprinklers away from walls and walkways to cut down on rust and hard-water stains
- Rinse pollen off with a garden hose during heavy pollen season
Not sure what you're looking at? The free stain identifier and safe pressure guide explain each stain and surface.
What can go wrong with DIY pressure washing
- Etched lines and 'zebra stripes' from holding a narrow tip too close
- Water forced into window frames, door sills and siding laps
- Damaged plants and lawns from chemical runoff
- Injuries: a zero-degree tip can cut skin, and wet surfaces are slippery
Our process for pressure washing for pressure-treated wood
- Walk the property and note surfaces, stains and anything fragile
- Protect plants, outlets, lights and doors, and move small items
- Pre-treat organic growth and degrease oil spots
- Clean with the right pressure and a surface cleaner for even results
- Rinse, post-treat to slow regrowth, and walk the job with you
How much does pressure washing for pressure-treated wood cost?
What moves the price:
- Size: square footage of siding, roof or flatwork
- Condition: heavy growth, old stains and peeling finishes take longer
- Access: number of stories, roof pitch, slopes and how close we can park
- Add-ons: sealing, gutter brightening and other services done in the same trip
These are typical U.S. ranges, not a quote. You get an exact price before any work starts. For a quick estimate, try the pressure washing cost calculator.
Other services for pressure-treated wood
- Deck Cleaning for Pressure-Treated Wood
- Deck Restoration & Staining for Pressure-Treated Wood
- Fence Cleaning for Pressure-Treated Wood
- Exterior Mold & Mildew Removal for Pressure-Treated Wood
Serving Oshkosh, WI and nearby towns
Freeze-thaw cycles and deicing salt are hard on concrete in Wisconsin. Cleaning it in spring and sealing it before winter reduces how much water and salt soak in, which is what causes surface flaking (spalling).
We provide pressure washing for pressure-treated wood across Oshkosh (ZIP codes 54901, 54902, 54903, 54904 and 54906) and nearby towns including Omro (10.1 mi), Winneconne (10.3 mi), Neenah (11.8 mi) and Menasha (13.2 mi). Call (555) 010-0000 for a free quote in Oshkosh.
Pressure Washing for Pressure-Treated Wood: frequently asked questions
How much does pressure washing for pressure-treated wood cost in Oshkosh, WI?
Pressure Washing for Pressure-Treated Wood typically costs $150-$600 for a typical home's driveway, walkways and patio, and usually takes 1-4 hours. The exact price depends on the size and condition, and you get it before any work starts. Call (555) 010-0000 for a free quote.
Do you use high pressure for pressure washing for pressure-treated wood?
For pressure-treated wood: usually 500-1,200 PSI with a wide fan tip. What we avoid: high pressure and narrow tips, which leave furry, gouged boards and lap marks. The cleaning solution does most of the work, followed by a gentle rinse.
Is pressure washing for pressure-treated wood safe for my plants and pets?
We pre-wet plants and lawns, keep cleaning solutions diluted to what the surface needs, and rinse landscaping again when we finish. Keep pets and children inside until surfaces are rinsed and dry.
How often should I schedule pressure washing for pressure-treated wood?
Clean yearly; restain every 2-3 years. Shade, nearby trees, humidity and heavy traffic mean more frequent cleaning; sunny, dry spots can go longer. Our free cleaning frequency tool gives a recommendation for your climate.
What if it rains on the day?
Light rain doesn't stop most washing, but heavy rain, high wind, lightning and freezing temperatures do. If the weather isn't right, we reschedule at no charge. Our work is backed by a satisfaction guarantee.