The combination of heavy rainfall, evergreen tree canopy and ocean air makes exterior surfaces prone to:
Green and black algae growth on siding
Moss and lichen buildup on concrete and pavers
Slippery walkways during wet months
Dirt, soot and environmental staining
Moisture retention that accelerates wood deterioration
Routine washing helps prevent moisture-related deterioration and extends the lifespan of exterior finishes. (CMHC Home Maintenance Guidelines)
Regular power washing is necessary maintenance in Vancouver, not a cosmetic extra.

Homes in these neighbourhoods often have large trees, shaded yards and north-facing walls that stay damp longer. This increases moss and algae growth on siding and driveways.
Shared walls and clustered building layouts trap moisture. Soft washing is ideal for exterior surfaces that require a gentle, uniform clean across strata complexes.
We clean:
Perfect for:
A low-pressure cleaning system that uses biodegradable detergents. Recommended for:
Siding
Stucco
Painted wood
Soffits and trims
James Hardie advises against using high pressure on fiber cement siding due to the risk of permanent damage, recommending gentle washing instead (James Hardie Siding Care Guide).


A high-pressure cleaning method used for durable surfaces such as:
Commercial-grade concrete
Grease stains
Heavily soiled hardscape
Industrial walkways and equipment pads
Pressure washing is a high-pressure, unheated water cleaning method used for strong, durable exterior materials. Best for:
Driveways
Pavers
Stone
Patios and driveways
Retaining walls
This method removes deep stains, moss, algae and embedded dirt.

WashTech uses a blend of soft washing and high-pressure cleaning, depending on the surface type. Ideal for:
Driveways and concrete pads
Decks, patios and pavers
Fences and retaining walls
Fully insured technicians
Biodegradable cleaning products that are safe for plants and pets
Vancouver-specific experience with shade, rainfall and marine air
Fast, reliable communication
Transparent pricing
Expertise in residential, strata and commercial properties
Recommended Frequency:
Siding under tree canopy: once every 12 months
Concrete and pavers: every one to two years
Decks and wood surfaces: yearly
Commercial properties: one to two times per year
The Canada Mortgage and Housing Corporation (CMHC) recommends regular exterior inspections and seasonal maintenance to prevent moisture-related deterioration(CMHC).
Check out our Seasonal Maintenance Guide.

Our detergents break down safely after use and are designed specifically for exterior cleaning in moisture-heavy environments like Vancouver.
Our team delivers professional exterior cleaning results that restore the true appearance of your property.
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Prevent dirty runoff from gutters streaking your windows.
Reduce exterior dust and pollen settling on glass.
Reduce exterior dust and pollen settling on glass.
Streak-free window washing for Vancouver properties.
WashTech is a locally owned and operated exterior cleaning company proudly serving Vancouver and the Greater Lower Mainland. With years of experience in both residential and commercial projects, we understand the challenges posed by Vancouver’s coastal climate - from moss and algae build-up to rainwater staining and salt exposure.
Our mission is simple: deliver reliable, high-quality exterior cleaning with integrity and care. We are fully licensed, bonded, and insured, and our team is trained in the latest techniques and safety practices.

CEO & Founder
Aidan Bar-Lev-Wise is the Founder and Owner of WashTech, a Vancouver-based company specializing in professional exterior property maintenance for residential and commercial clients across the Lower Mainland. With a reputation built on reliability, safety, and service excellence, Aidan leads WashTech with a clear mission — to deliver trusted, detail-oriented solutions that protect and elevate every property.
Light rain is fine and does not affect results. Heavy rainfall can reduce cleaning efficiency. Spring and fall offer the best balance of temperature and moisture.
WashTech uses biodegradable, plant-safe and pet-safe detergents formulated for exterior cleaning. They break down safely after use and do not harm landscaping.
Most residential services take one to three hours, depending on property size and buildup.
Yes. Many clients schedule power washing together with house washing, gutter cleaning or window cleaning for a complete exterior refresh.
A: Yes. For commercial or multi-unit sites, we plan work times to minimize disruption and coordinate with you or your property manager in advance.