Power Washing in London, Ontario | Lean On Me

Power washing in London, Ontario costs $150–$600 CAD. London's snowbelt winters leave heavy salt, algae, and organic staining on driveways, decks, siding, and fences that require professional pressure washing to restore.

WFF

We Fix Fences

Published in London • 4 min read

London, Ontario winters are legendary for their snowfall, and that snow brings with it months of road salt, sand, and organic debris that coat every exterior surface on your property. By the time spring thaw arrives in London, driveways are grey with salt efflorescence, decks are green with algae, and siding is streaked with mould from months under snow cover. Professional power washing is the most efficient way to reset your property's exterior — and Lean On Me delivers that service across London with the right equipment for every surface type.

We serve residential and commercial clients throughout London, from Westmount and Oakridge in the west to White Oaks and Glen Cairn in the south, and from Old North to Stoneybrook in the northeast. Our team is experienced with the range of exterior materials found across London's housing stock — heritage brick in Old South, vinyl siding in newer Lambeth subdivisions, natural stone in Masonville estate homes, and commercial concrete in the downtown core.

Soft washing and pressure washing aren't the same thing, and Lean On Me knows when to use each. Delicate surfaces like painted wood siding, older brick mortar, and cedar fencing get soft washing with lower pressure and biodegradable detergents. Concrete driveways, paving stone patios, and garage floors get full pressure washing with appropriate nozzle angles to lift embedded grime without surface damage.

climate impact

London's position in the Lake Huron–Lake Erie snowbelt creates an almost perfect storm for exterior surface contamination. Heavy snowfall means months of road salt and sand tracked onto driveways and walkways, leaving crystalline deposits that etch concrete and attract further soiling. The Thames River and its tributaries raise ambient humidity in many London neighbourhoods, keeping wood surfaces damp enough to support algae and mould growth even through winter. North and east-facing surfaces — shaded from drying sunlight — develop thick green and black biofilm coatings that become physically hazardous and structurally damaging if not removed annually. London's hot, humid summers then bake these deposits into porous concrete, brick, and wood surfaces, making fall cleaning an equally important seasonal task.

common issues

Road salt and sand residue crystallizing on concrete driveways and front walks
Green algae and black mould colonizing vinyl siding on north-facing London homes
Thames River area dampness causing persistent mould on wooden decks and fences
Lichen and moss growth on brick retaining walls in older London neighbourhoods
Pollen and organic debris embedded in composite deck board channels
Oil and tire rubber staining on concrete garage floors and apron slabs

cost breakdown

Power washing costs in London, Ontario depend on surface type and total area. Driveway (standard residential): $150–$300. Deck or patio (up to 500 sq ft): $150–$350. House siding — full exterior wash: $250–$500. Fence washing (per 100 linear feet): $100–$200. Front walkway and steps: $100–$200. Brick or stone retaining wall: $150–$350. Commercial exterior or parking area: $300–$600+. Spring and fall combination packages available at bundled savings. Additional charges may apply for heavy mould treatment or multi-storey height access.

Frequently Asked Questions

Can power washing damage London's older brick homes?

Older brick and mortar require a soft wash approach — low pressure with a biodegradable surfactant. High pressure can erode mortar joints. Our team assesses brick age and condition before selecting the appropriate method.

How do you handle the Thames River area humidity when cleaning wood decks?

We clean and assess the wood condition, then recommend a penetrating sealer application within 48 hours of washing. This seals the wood while the pores are open and clean, dramatically slowing future mould growth.

Is power washing environmentally safe near London's Thames River corridor?

Yes. We use biodegradable, phosphate-free detergents and contain runoff where possible. We comply with the City of London's stormwater runoff guidelines during all washing operations.

How long does it take to power wash a London house exterior?

A standard two-storey London home exterior takes 3–5 hours. Combined driveway, deck, and siding packages are typically completed in a single day visit.

Do I need to prepare my property before power washing?

Close windows and doors, move patio furniture and planters away from work areas, and ensure we have access to an exterior water tap. We handle the rest.

sources

City of London Environmental Services — Stormwater Management Guidelines
Canada Mortgage and Housing Corporation — Mould Prevention in Homes
Restoration Industry Association — Safe Pressure Washing Practices