Power Washing Markham | Driveways, Decks, Fences & Interlock | Lean On Me
Lean On Me delivers professional power washing across Markham and Unionville for driveways, decks, fences, siding, and interlock, cutting through winter road salt, algae, and GTA grime with commercial-grade equipment.
We Fix Fences
Published in Markham • 4 min read
Markham homeowners invest heavily in their outdoor living spaces. Premium interlock driveways, cedar and composite decks, natural stone patios, and ornamental fencing are the norm in communities like Unionville, Angus Glen, and Cathedraltown. After a GTA winter, all of those premium surfaces need professional attention: road salt residue, algae, winter grime, and pollen have accumulated over months, and power washing is the most efficient way to restore them to their best condition before the outdoor living season begins.
Lean On Me provides residential and commercial power washing throughout Markham, including Unionville, Milliken, Cornell, Wismer, Angus Glen, Cathedraltown, and Buttonville. We use commercial-grade pressure washing equipment calibrated to match each surface — high enough to remove embedded grime and biological growth, precise enough to protect premium interlock, natural stone, and wood surfaces from pressure damage. Our technicians conduct a pre-wash inspection to document any pre-existing surface conditions before work begins.
Markham's Unionville and Angus Glen communities have some of the most premium outdoor surfaces in York Region, and our team treats them accordingly. We don't use a one-size-fits-all pressure setting — we adjust for each material type, surface condition, and soiling level to deliver the best result with no collateral damage.
climate impact
Markham's GTA location subjects its outdoor surfaces to the full suite of annual degradation forces. York Region applies heavy volumes of road salt and sand to Markham's roads and sidewalks throughout the winter maintenance season. This material migrates onto driveways, walkways, and lower fence sections, and when left in place through spring and summer, it accelerates concrete spalling, stains natural stone, and promotes corrosion of metal fixtures and fencing hardware.
The GTA's humid continental climate, moderated by Lake Ontario's proximity, creates extended damp conditions that drive biological surface growth in Markham. Algae establishes on any surface that receives shade and moisture — deck boards, fence pickets, north-facing siding, and the joints of interlocking stone driveways. In Markham's established neighbourhoods like Unionville, mature tree canopies create the damp, shaded conditions that favour aggressive algae and lichen growth.
Markham's spring pollen season is significant, and pollen settling into deck boards, fence rails, and paving stone joints creates a nutrient-rich organic layer that fuels mold and mildew through the summer. A thorough spring power washing removes this organic base before it accelerates biological surface damage, and prepares surfaces for staining, sealing, or other protective treatments that perform best on a clean substrate.
common issues
- Road salt and sand residue staining Markham driveways, particularly premium interlock and exposed aggregate
- Green algae and lichen growth on cedar decks and fences in shaded Unionville and Wismer yards
- Black mildew streaking on vinyl siding and fence panels on east and north-facing exposures
- Pollen and organic debris accumulating in interlocking stone joints in Markham's spring
- UV graying and surface lifting on cedar decks from freeze-thaw moisture cycling over winter
- Moss and organic buildup in natural stone and concrete patio surfaces in Cathedraltown and Angus Glen
cost breakdown
Power washing prices in Markham — all prices in Canadian dollars.
Driveway and walkway power washing: $150–$350 for a standard two-car driveway. Premium interlock, exposed aggregate, and natural stone driveways are priced by area with surface-appropriate techniques.
Deck power washing: $150–$400 depending on deck size and construction material. Cedar, pressure-treated, and composite decks each handled with surface-specific PSI settings.
Fence power washing (per 100 linear feet): $100–$250. Algae-covered or heavily weathered fences take additional time and pre-treatment.
Full house exterior siding wash: $250–$600 depending on home size. Markham's many two and three-storey suburban homes priced by square footage.
Patio and interlocking stone cleaning: $150–$400. Polymeric sand re-application available as an add-on after washing to reseal joints.
Spring bundled package (driveway + deck + fence + siding): Ask about combined pricing — booking multiple surfaces in one visit saves on mobilization and scheduling costs.
Frequently Asked Questions
Can you power wash my premium interlock driveway in Unionville without damaging the surface?
Yes. We use a rotary surface cleaner attachment at interlock-appropriate pressure settings that cleans evenly across the entire surface without cutting into joint sand or damaging the stone face. After washing, we replace polymeric sand in joints where the washing has displaced it.
My cedar deck in Markham is badly greyed — will power washing bring it back?
Power washing removes surface grey, mold, and biological growth, exposing cleaner wood beneath. For optimal results, we recommend applying a cedar brightener after washing, then sealing or staining within 48 hours once the wood is dry. This process reliably transforms grey, weathered Markham cedar decks.
Do you power wash commercial properties in Markham?
Yes. We service Markham commercial properties including restaurant patios in Unionville's historic district, retail plazas throughout the city, commercial building exteriors, and parking structures. Commercial scheduling is available for early morning and weekend service.
How early in spring can power washing start in Markham?
We begin spring power washing as soon as overnight temperatures are consistently above 5°C — typically late April in the Markham area. Working in cold temperatures affects surface drying and sealer curing, so we wait for stable conditions. Our spring schedule opens for bookings in early March.
Can power washing help remove bird droppings and tree sap from my Markham deck and siding?
Yes. Tree sap and bird droppings are among the most common surface staining issues in Markham's tree-canopy neighbourhoods like Unionville. We pre-treat heavily soiled areas with appropriate solvents before pressure washing to ensure complete removal without surface damage.
sources
- Environment Canada: Vaughan–Richmond Hill–Markham Weather Alerts (weather.gc.ca)
- Ergeon: How to Clean and Maintain Fences After Winter (ergeon.com)
- Government of Canada: GTA Climate and Frost Advisory Data (climate.weather.gc.ca)