Power Washing Ottawa | Decks, Driveways, Fences & Siding | Lean On Me
Lean On Me provides professional power washing in Ottawa for decks, driveways, fences, and siding, removing winter grime, algae, and road salt staining using commercial-grade equipment.
We Fix Fences
Published in Ottawa • 4 min read
Every Ottawa spring reveals the same story: months of road salt, sand, snow mold, algae, and exhaust grime coating every outdoor surface. Driveways are stained with calcium chloride residue, decks are green with algae, fences are grey and mottled with mildew, and vinyl siding is streaked with oxidation and dirt. After Ottawa's long, dirty winters, professional power washing is the fastest and most effective way to restore your home's exterior to its best condition.
Lean On Me provides residential and commercial power washing services throughout Ottawa, from Kanata and Stittsville in the west to Gloucester and Orléans in the east. We use commercial-grade pressure washing equipment calibrated to the right PSI for each surface — high enough to blast away embedded grime, but controlled enough to avoid damaging wood, vinyl, or masonry. Our technicians are trained to spot pre-existing damage before washing, protecting you from claims that washing caused issues that were already there.
Power washing in Ottawa isn't just cosmetic. Road salt residue left on concrete driveways accelerates freeze-thaw spalling, shortening driveway life by years. Algae and mildew on wood decks penetrate the grain and accelerate rot. Mold on vinyl siding, if left untreated, can work behind panels and into insulation. A single annual power washing service pays for itself many times over in extended surface life and avoided repair costs.
climate impact
Ottawa's winters are uniquely harsh on exterior surfaces. The City of Ottawa applies enormous quantities of road salt and calcium chloride to roads and sidewalks each winter, and this brine inevitably splashes onto driveways, walkways, lower siding, and fence bases. Calcium chloride residue is hygroscopic — it actively attracts moisture — and when left on concrete, it accelerates the freeze-thaw spalling cycle that pits and flakes paved surfaces.
Ottawa's humid summers create ideal conditions for algae, lichen, and mildew growth on any shaded surface. North-facing fences, deck boards, and siding that receive less sunlight will typically develop green algae or black mildew staining within one to two seasons. The city's position in the Ottawa River valley means morning fog and dew are common, keeping surfaces damp for extended periods and further encouraging biological growth.
Spring thaw deposits sand, grit, and organic debris across all surfaces, and the combination of freeze-thaw cycles and UV radiation leaves wood surfaces grey and raised-grain rough. Power washing removes all of these accumulated materials, stops ongoing biological damage, and prepares surfaces for sealing, staining, or painting — all of which perform significantly better on a clean substrate.
common issues
- Road salt and calcium chloride staining on driveways, walkways, and lower fence sections
- Algae and green mildew on decks, fences, and siding from Ottawa's humid summers and morning fog
- Black mold streaking on north-facing vinyl siding and fence boards
- Sand and grit ground into patio pavers and concrete surfaces after spring snowmelt
- Wood graying and raised grain on decks and fences from UV exposure and moisture cycling
- Exhaust and airborne grime buildup on walls and surfaces near Ottawa's busy arterial roads
cost breakdown
Power washing prices in Ottawa depend on the surface type, square footage, and level of soiling. All prices in Canadian dollars.
Driveway power washing: $150–$350 for a standard two-car driveway. Heavily salt-stained or oil-spotted driveways may require pre-treatment.
Deck power washing: $150–$400 depending on deck size and condition. Includes railing and stair washing.
Fence power washing (per 100 linear feet): $100–$250. Heavily mildewed or stained fences take longer and cost more.
House siding (full exterior): $250–$600 for an average Ottawa home. Two-storey homes and those with extensive detailing cost more.
Patio, walkway, and steps: $100–$300 depending on area and material type.
Bundled packages (driveway + deck + fence): Ask about bundled pricing — combining services in one visit saves on mobilization costs.
Frequently Asked Questions
When is the best time to power wash in Ottawa?
Late April through September is ideal. We recommend waiting until overnight temperatures are consistently above 5°C so surfaces dry properly and any applied sealers cure correctly. Spring is the most popular time because it removes all the winter salt, sand, and mold accumulation.
Will power washing damage my wood deck or fence?
Not if done properly. We calibrate pressure to each surface — lower PSI for soft woods like cedar and pine, higher for concrete and brick. We always spray with the grain on wood surfaces and maintain proper nozzle distance. Improper DIY pressure washing is a common cause of wood damage.
How long does power washing take for a typical Ottawa home?
A standard package including driveway, deck, and fence typically takes three to five hours for a crew of two. Siding adds another one to two hours depending on home size.
Should I seal my deck or fence after power washing?
Yes — sealing or staining shortly after power washing (once the surface is fully dry, typically 48 hours) is strongly recommended. Ottawa's UV intensity and moisture cycling will cause freshly cleaned wood to start graying again within weeks if left untreated. We can recommend sealers appropriate for Ottawa's climate.
Do you offer commercial power washing in Ottawa?
Yes. We service commercial properties including parking lots, storefronts, restaurant patios, and industrial yards across Ottawa. Commercial scheduling can be arranged for early morning or weekend service to avoid business disruption.
sources
- City of Ottawa Winter Maintenance Program: Road Salt Usage (ottawa.ca)
- Ergeon: Repair Fence After Winter Weather — Tips and Tricks (ergeon.com)
- Government of Canada: Ottawa Climate Data (climate.weather.gc.ca)