Soft Washing in Kitchener-Waterloo & Cambridge
Low-pressure bio-cleaning solution that kills algae, mould, and mildew at the root — safe for siding, roofs, and landscaping.
Soft washing is a low-pressure cleaning method (40 to 100 PSI) that uses biodegradable cleaning solutions to kill and remove organic growth — algae, mold, mildew, lichen, and moss — from delicate exterior surfaces including roofs, stucco, vinyl siding, cedar, and painted wood. Unlike pressure washing, soft washing kills organisms at their roots rather than blasting surface growth away, delivering results that last one to three years. D&D Home Services uses environmentally certified soft wash solutions safe for your landscaping and family.
What Is Soft Washing?
Unlike pressure washing, soft washing uses low water pressure combined with specialized, biodegradable cleaning solutions to safely clean surfaces that high pressure could damage. It's the recommended method for vinyl siding, stucco, painted wood, roof shingles, and other delicate materials.
Our soft washing solutions kill mould, algae, mildew, and bacteria at the root — meaning your surfaces stay clean one to three years — significantly longer than pressure washing alone. It's the smart choice for a whole-home exterior clean.
🏠 Vinyl Siding
Remove years of green algae, dirt, and oxidation without warping or damage
🏗️ Stucco & EIFS
Gentle cleaning that won't crack or damage textured exterior finishes
🛖 Roof Shingles
Black streak and moss removal that extends your roof's lifespan
🌿 Eco-Friendly
100% biodegradable solutions safe for landscaping, pets, and kids
Why Soft Washing Outperforms Pressure Washing for Organic Growth
The primary active agent in professional soft washing is sodium hypochlorite (NaOCl) — diluted to 0.5 to 3% — which kills algae, mold, mildew, and lichen at the cellular level by disrupting cell membranes. Standard pressure washing blasts away only the visible surface growth, leaving root systems intact. These root systems regrow to visible levels within 30 to 90 days. Soft washing eliminates the organism entirely, delivering clean results that typically last one to three years on siding and one to two years on roofing. The Asphalt Roofing Manufacturers Association (ARMA) specifically recommends low-pressure chemical washing — not high-pressure washing — for asphalt shingle cleaning, noting that high-pressure water removes granules and voids most shingle manufacturer warranties. D&D Home Services uses environmentally certified, biodegradable soft wash solutions at the correct dilution for each surface type.
How Our Soft Washing Works
Protect Landscaping
We pre-wet and protect all plants, gardens, and landscaping before applying solutions.
Apply Solutions
Biodegradable cleaning agents are applied at low pressure to target mould, algae, and grime.
Dwell & Break Down
Solutions need time to work — killing organic growth at the root for lasting results.
Gentle Rinse
A low-pressure rinse removes all cleaning agents and loosened grime, revealing clean surfaces.
Yes! Soft washing is specifically designed for delicate surfaces like vinyl siding, stucco, EIFS, painted wood, and roof shingles. The Asphalt Roofing Manufacturers' Association (ARMA) actually recommends low-pressure biocide washing over high-pressure cleaning for roofs, because pressure stripping accelerates granule loss. Our cleaning solutions use diluted sodium hypochlorite (NaOCl) — the same compound in household bleach but applied at professional concentrations — to kill algae, mould, and lichen at the biological root rather than just blasting them off.
We use 100% biodegradable solutions and always pre-wet and protect your landscaping before application. Our products are safe for gardens, lawns, pets, and children.
Because our biocide solutions eliminate mould, algae, and lichen at the root rather than just removing surface staining, results typically last 1–3 years depending on your property's shade and moisture exposure — compared to 3–6 months for pressure washing alone. North-facing walls and heavily shaded siding fall closer to the 1-year mark; south-facing surfaces in full sun often stay clean for 2–3 years.
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Professional exterior cleaning services for every need. Serving Kitchener, Waterloo, Cambridge & Guelph.
What Our Customers Say
Real reviews from homeowners in Kitchener-Waterloo, Cambridge & Guelph
"My siding was covered in green algae and looked terrible. After D&D's soft wash treatment it looks brand new! The low-pressure method was perfect — no damage, just clean."
"Had D&D soft wash our roof and it completely transformed the look of our home. The black streaks that had been there for years are completely gone. Extremely happy with the results!"
"Absolutely incredible transformation. My vinyl siding went from green-grey to bright white in a few hours. The team was professional and explained the whole process. Will definitely call again!"
"Booked online and they arrived the next morning right on time. Fast, thorough, and left everything spotless. Best decision I've made for my home this year!"
Soft Washing Near You
We proudly serve homeowners across the Kitchener-Waterloo region
Give Your Home a Gentle Deep Clean
Safe, effective soft washing that lasts!