Contact us - we’re here to help you.
Contact us - we’re here to help you.
Algae on walls.
Moss and organic growth creeping back onto roofs.
It doesn’t mean your property is failing — it means moisture and pollution have created the perfect environment for growth.
At Glossy Roof, we use professional soft washing and biocide treatments to safely clean and protect roofs, render and exterior surfaces across London & Surrey — without high pressure, without damage, and with long-lasting results.
Soft washing is a low-pressure cleaning method that removes algae, moss, lichen and organic staining at the root, not just on the surface.
Instead of blasting surfaces with force, we apply professional-grade cleaning solutions and biocides that:
✅ break down organic growth
✅ kill spores
✅ prevent rapid regrowth
It’s the safest and most effective option for delicate surfaces.
This isn’t just a visual clean — it’s restoration and protection.
Black streaks, green staining and organic marks are removed, instantly lifting the look of your property.
Low pressure means no cracked render, no disturbed pointing, no damaged coatings — ideal for older or delicate finishes.
Because the treatment kills growth at the root, surfaces stay cleaner far longer than with pressure washing alone.
Biocide treatments continue working after application, slowing down the return of algae and moss.
A clean exterior makes a property look cared for, well-maintained and more valuable.
✅ monocouche render
✅ silicone & acrylic render
✅ painted walls
✅ K-render and modern finishes
✨ Used as a standalone treatment, or
🛠️ Combined with manual moss removal or gentle washing
🧪 Kills remaining spores
🌱 Prevents rapid moss regrowth
💨 Helps the roof dry faster after rain
🎨 Used before roof coating, or
🔄 Included as part of ongoing maintenance
⚠️ High pressure can:
🚫 Damage render
🚫 Strip protective coatings
🚫 Force water behind surfaces
🚫 Accelerate deterioration
💧 Soft washing:
🧪 Uses chemistry, not force
✅ Is safer for materials
🌟 Delivers longer-lasting results
🏠 Is recommended for modern finishes
It’s the professional choice for cleaning without risk.
We carefully remove moss by hand using specialist tools and extendable poles, reaching every part of your roof safely without causing damage.
This method is ideal for older or delicate roofs that need a gentle, professional touch.
Soft washing is one of the safest and most effective ways to clean and protect your roof.
We apply a specialist soft-wash treatment at low pressure, killing moss, algae and lichen at the root — preventing regrowth for years ahead.
This commercial-grade, UK-approved solution works gradually. The treatment continues to clean naturally as rain rinses away the remaining debris, leaving your roof looking brighter week by week.
Soft washing works perfectly alongside manual moss removal or a gentle wash — giving your roof a long-lasting finish.
For modern roofs in good condition, we use a rotary surface cleaner that spreads water pressure evenly — safe for tiles, powerful on results.
After cleaning, we apply a biocide treatment to prevent moss and algae from returning.
This method restores your roof’s true colour and gives it a clean, uniform finish.
It’s also an excellent way to prepare the roof surface for coating, ensuring the best possible adhesion and long-lasting results.
We don’t rush jobs and we don’t cut corners.
Clients choose us because:
🏠 We understand exterior materials, not just cleaning
🛠️ We select treatments based on surface type and condition
✅ We follow safe working practices
📸 We provide clear before-and-after photos
🌟 We focus on results that last
We treat your property with the care it deserves.
At Glossy Roof, we provide more than just one-off repairs.
Many clients choose to combine services to protect their property properly and avoid future problems.
We provide soft washing and biocide treatments across London & Surrey, including:
Wimbledon • Kingston • Croydon • Sutton • Wandsworth • Clapham • Balham • Merton • New Malden • Worcester Park and surrounding areas.
If your render, walls or roof are stained, discoloured or affected by organic growth, soft washing could be the safest and most effective solution.
for your free roof cleaning quote
and keep your home protected from water damage all year round.
Clean surfaces. Protected homes.