10 Best Roof Cleaner Bio Wash in The UK

Last updated on 20/08/2025

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Best Choice

9.7

Exceptional

Jarder

Jarder Ultra Strong Roof Cleaner 4 x 5L - Removes Mould, Dirt, Black Spot and More - Super Concentrated Formula

Why We Love It

Eliminates tough dirt quickly.
Leaves surfaces like new.
Works on all roof types.

Main Highlights

INTENSE FORMULA: Quickly eliminates Mould, Grime, Dirt, Black Spots, Lichen and More..
LIKE NEW: Our unique formulation leaves surfaces like new and results are visible within hours.
VERSATILE: Jarder Roof Cleaner cleans away everyday dirt and grime and can used on all roof types. It can even be used on patio slabs and driveways for a complete clean of your exterior.
READY TO USE: No mixing required, simply apply using a watering can or pressure sprayer.
WIDE COVERAGE: One 5L Bottle covers 40 square metres.

Smartseal Roof Clean Xtreme - Powerful, Fast Acting Roof Cleaner - Concentrated Growth Killer For Roofs, Algae Remover For Concrete, Slate And Clay Roof Tiles - (5 Litre)

Why We Love It

Powerful and proven formulation.
Removes dirt and grime.
Fast-acting, noticeable results.

Main Highlights

💪POWERFUL ROOF CLEANER - Choose our professional grade roof tile sealer to effectively remove green growth, inhibit further growth, and restore the appearance of your roof. With its powerful formulation, it eradicates green growth as well as black lichen and green algae. Enjoy the confidence of a clean and well-maintained roof. Witness the remarkable results with our exceptional roof tile cleaner.
🏠 POWERFUL AND PROVEN ROOF CLEANER FOR BLACK SPOT LICHENS! - Experience the power of our highly effective Roof Cleaner, specially formulated to tackle the persistent growth of black spot lichens on roofs. These stubborn organisms thrive in damp conditions across the UK, appearing as tiny spots on porous surfaces when left untreated or unwashed. Don't let them mar the beauty of your roof any longer. Our powerful roof cleaner can help retain the look and appearance of your roof for years to come.
✔️ PROVEN AND TRUSTED ROOF TILE CLEANER - Our roof tile cleaner has been extensively tested and proven to tackle a range of green growth and lichens, including black, green, white, and yellow varieties. With its powerful formulation, it effectively eliminates green growth, algae and lichens from roof tiles as well as driveways and patios. Say goodbye to the unsightly presence of green algae and lichens on your roof tiles.
⏱️ SAY GOODBYE TO GREEN GROWTH FAST! - Our high-performance roof tile cleaner is proven to tackle green growth as well as dirt and grime with exceptional speed. In just one hour, you can witness the transformative power of this product as it cleans your roof and eliminates green growth and algae. When time is of the essence, our roof cleaner is the best option for achieving speedy and remarkable results. Take action and choose our high-performance roof growth killer.
💥MAXIMUM CLEANING POWER FOR ROOFS! - Experience the exceptional roof cleaning power of our concentrated roof cleaner and growth killer. With 5 litres of product, you can clean approximately 40 m² of roof surface, ensuring maximum coverage and effectiveness. Say goodbye to surface dirt and grime, thanks to the potent ingredients of our Xtreme range.

Wet & Forget Mould, Lichen & Algae Remover, Outdoor Patio Cleaner, Black Spot Remover, Bleach Free, 5L

18% OffFree Shipping

Why We Love It

Efficiently removes mould, mildew, algae.
Large coverage for maximum cleaning.
No harsh scrubbing required.

Main Highlights

No Scrubbing Required: Simply mix 1 part Wet & Forget with 5 parts water, apply to the desired surface, and let it work its magic. No scrubbing, rinsing or jet washing required, just spray and walk away
Highly Concentrated Formula: One bottle produces up to 30 litres of solution, covering a large area of 100-300m². Apply in cloudy, dry conditions for best results, ensuring at least 4-5 hours before any rainfall
Versatile Application: Perfect for various surfaces, including patios, roofs, bricks, paving, artificial grass, tarmac, decking and more. Whether it's your driveway, headstones, or solar panels, Wet & Forget has you covered
Softer Solution: Wet & Forget’s gentle, nearly pH-neutral formula is bleach-free making it safe to use on so many different outdoor surfaces
Confidence in Every Spray: While our formula is gentle, we recommend wearing protective gloves and eye protection during use.

SmartSeal 'Green Clear' Highly Concentrated - Easy to Apply Best Mould, Lichen & Algae Remover - Quickly Kills Organic Green Growth from Roofs, Driveways & Patios - Algae Killer For Driveways (5L)

Why We Love It

Efficient mould and algae killer.
No scrubbing or cleaning required.
Impressive coverage and easy application.

Main Highlights

🌿 EFFICIENT MOULD, LICHEN & ALGAE KILLER - Experience Smartseal Green Clear, the ultimate biocide solution. This advanced formula is specifically designed to combat the growth of green algae and stubborn lichen spores that commonly appear in damp and cold areas. Say goodbye to unsightly stains and restore the pristine beauty of your outdoor surfaces with this effective algae and lichen remover.
🚿 NO SCRUBBING OR PRESSURE CLEANING REQUIRED - Effortlessly remove mould and green algae without damaging the surface with Smartseal Green Clear. This powerful green algae killer and patio black spot remover for paths, patios and drives eliminates the need for high-pressure washing or scrubbing, preserving the integrity of all hard surfaces. Say goodbye to unsightly stains and enjoy a clean and pristine outdoor environment with this effective anti-mould solution.
🎯 EXCELLENT COVERAGE - With 5 Litres of Smartseal Green Clear, you'll get an impressive 100-125m2. Depending on the thickness of the organic growth, an extra application may be required after the initial treatment for optimal results.
💦 EASY APPLICATION - Green Clear can be diluted at a ratio of 1:5 for effective results. Apply the solution evenly using a watering can or pump sprayer for a hassle free application. After cleaning the surface, simply spray this product (when dry) to inhibit further growth and ensure long-lasting results. This versatile formula serves as an effective green algae cleaner, organic growth killer for paths and drives, and green algae remover, keeping your outdoor spaces pristine.
🌟 EXPERIENCE FIVE-STAR CUSTOMER SUPPORT - At Smartseal, we pride ourselves on our exceptional customer service. Our dedicated team is always available to assist, answer questions, and provide guidance. Whether you’ve got a new surface and/or existing surface and need help choosing the right product, we’re here to assist you. Enjoy peace of mind with Smartseal's tireless commitment to your satisfaction.

B5-PRO DDAC Biocide 4x 5 Litre - Roof Cleaning, Softwash (Professional Only)

Main Highlights

💪 Powerful Patio Cleaner Professional-grade Sodium Hypochlorite removes algae, lichen, and stains from patios, driveways, and hard outdoor surfaces. 🌱 Effective Algae & Mold Remover Quickly eliminates green algae, black mold, and lichen on concrete, brick, decking, and fences. 🔄 Multi-Purpose Formula Perfect as a patio cleaner, driveway restorer, outdoor disinfectant, or industrial bleach. ⚡ Fast-Acting & Easy to Use Dilutes easily and works in minutes—apply with sprayer, brush, or watering can. 🔥 High Concentration Tough on grime with superior coverage for professional results.

Floorseal Premium Surface Sealers & Cleaners

Roof Cleaner Bio Wash (5 Litre)

Why We Love It

No scrubbing or rinsing required.
Covers up to 120m².
Suitable for various roof types.

Main Highlights

EASY TO APPLY: Spray and leave formula, no scrubbing required. Dilute at 1:5 with water – one part product to 5 parts water and spray directly onto the surface. Leave the product to work over time. No rinsing or scrubbing is required! Let the product do the work so you do not have to!
NO RINSING: Spray onto your roof and leave to work. This product should be left on the surface without rinsing. It does not require any scrubbing or agitation to work. After application your roof will become cleaner over the following days, weeks and months.
LONG LASTING RESIDUAL FORMULA: Roof Cleaner Bio Wash will last up to 12 months once applied to your roof. Apply to older roofs to remove organic growth. Pre-treat new roofs as a preventative measure (or recently cleaned/scraped roofs) to inhibit a reinfestation of organic growth. Apply once or twice per year to remove contaminations or inhibit its appearance/reappearance.
WATER-BASED FORMULA: Roof Cleaner Bio Wash is an easy to use water-based product. Apply to your roof and allow to dry. The product becomes active within around 12 hours. Does not contain acid or bleach.
HUGE COVERAGE – A single 5-litre container covers up to 120m2, 10-litre covers up to 240m2 and 20-litre will cover up to 480m2, when diluted 1:5 with water.Apply with a simple low pressure pump-up sprayer. Spray evenly over the roof covering 5m2 with approximately 1 litre of solution.
SUITABLE FOR: Old or new roof tiles which are contaminated with organic growth. Apply to concrete, slate, clay-tiles, sandstone, limestone or any surface which is suffering from organic growth. Such as green organic matter, slimes, fungi, lichen, algae and more.
FURTHER INFORMATION AT THE FOOT OF THE PAGE.

Soluguard Multi Surface Biocide - 5L - High Strength, Ready for Use Against Fungi, Mould, and Algae on Internal and External Walls, Brick, Render, Stone, Driveway, Roof Tiles & Other Surfaces

Free Shipping

Why We Love It

Clears biological growth efficiently.
Ideal Stormdry Masonry Preparation.
Non-flammable, low-odour formula.

Main Highlights

Clears biological growth
Recommended preparation for Stormdry Masonry Protection Cream
Apply using, brush, roller, or spray
Ready for use (no mixing)
Low odour, non-staining, non-flammable

Pro-Kleen Rapid Acting Roof Cleaner - Removes Dirt, Grime, Lichen, Black Spots and More - Easy and Ready to Use Formula (5 Litres)

Why We Love It

Removes dirt and grime easily.
Suitable for any roof tiles.
Prevents algae and mould return.

Main Highlights

Deeply cleans your roof to remove dirt and grime easily
Removes lichen, black spots, white spots, algae, mould & more
You can use our roof cleaner to deeply clean any roof tiles, even clay!
Designed with 4 powerful and active cleaning ingredients and a biocide, all of which help to prevent any algae, mould or lichen from returning!
Easy and ready to use formula - get a cleaner roof in just 60 minutes

Autoglym Convertible Soft Top Clean & Protect Complete Kit - Convertible Roof Cleaner, Protector and Waterproofer - Fabric and Canvas Soft Top Moss, Mould & Stain Remover - Car Canvas Repair & Restore

20% OffFree Shipping

Why We Love It

Complete care for convertible tops.
Enhances waterproofing and cleanliness.
Includes all essential accessories.

Main Highlights

Our Convertible Soft Top Clean & Protect Complete Kit contains everything you need to clean and protect your mohair, double duck, fabric or canvas fabric hood
Contents: 500ml Soft Top Cleaner, 500ml Soft Top Protector, 1 x cleaning sponge, 1 x Soft Top Protector applicator sponge
Protects and preserves the surface of your convertible car from the effects of water absorption and surface soiling
For best waterproofing results, we would advise to apply the Soft Top Protector to your soft top when damp
If you have a vinyl hood, clean thoroughly with Bodywork Shampoo Conditioner, then protect with Bumper & Trim Gel

Floorseal Premium Surface Sealers & Cleaners

Floorseal Green Remover Concentrate - For Roofs, Walls, Driveways & Patios – Removes Green Organic Matter, Algae, Mould & More (Formerly Moss Remover Plus) (5 Litre)

Why We Love It

Powerful, comprehensive cleaning solution.
Requires no pressure washing.
Safe for homes and wildlife.

Main Highlights

POWERFUL FORMULA - For removing green organic matter on roofs, patios, driveways, walls, render, masonry & other hard surfaces. Removes severe clumps of green matter, green algae, red algae, mould and prevents the spores of black spot lichens from germinating.
NO PRESSURE WASHING REQUIRED! – Green Remover Concentrate can easily be applied via low pressure pump-up garden spray or watering can. Apply directly to the affected surface and leave the solution to work its magic over the next days, weeks & months - no need to rinse.
SUITABLE FOR MOST HARD SURFACES – Concrete roof tiles, clay roof tiles, marley roof tiles, natural stone roof tiles, renders, general masonry, bricks, tarmac, sandstone, slate, granite, concrete, cement tiles, block pavers, composite man-made tiles & caravans.
MASSIVE COVERAGE - A 5 litre container will cover approximately 125m2. Apply at 1:5 diluted into clean water. For heavy contaminations of green matter this product can be applied at 1:3. Spray on and walk away.
SAFE TO USE - A fully biodegradable product which can be applied around the exterior surfaces of homes and businesses without harm to children, pets & wildlife. Does not contain bleach or acids. Apply directly to the surface and allow it to dry, no rinsing required.
INHIBITS REGROWTH - The application of this product has a residual affect so acts as an inhibitor preventing the return of green organic contaminants, algae, and black spot lichens. Perfect for applying annually to roofs, driveways, patios & walls cleaning & preventing the return of unwanted green growth.
EASY TO USE - Simply spray on and walk away, no rinsing required. A great product for removing the build-up of slippery or unsightly green or red algae in the autumn, spring, and winter months. Spray over your hard surfaces to remove green organic matter, algae, mould & lichens. Apply once or twice per year to inhibit the return of unwanted green matter.
FURTHER INFORMATION at the foot of the page.

8.7

Excellent

We scanned 226 products

We reviewed these offers relevant to the Roof Cleaner Bio Wash within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Jarder, SmartSeal, Wet & Forget, CHEMWAY, Floorseal Premium Surface Sealers & Cleaners, SAFEGUARD, Pro-Kleen, Autoglym, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Roof Cleaner Bio Wash in the market, we considered we took a deep dive into 1131 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Jarder Ultra Strong Roof Cleaner 4 x 5L - Removes Mould, Dirt, Black Spot and More - Super Concentrated Formula. We love many things about this product by Jarder. What sets it apart from the competition is Eliminates tough dirt quickly, Leaves surfaces like new, Works on all roof types.
The best value product for most shoppers and where user satisfaction is continuously the highest is Smartseal Roof Clean Xtreme - Powerful, Fast Acting Roof Cleaner - Concentrated Growth Killer For Roofs, Algae Remover For Concrete, Slate And Clay Roof Tiles - (5 Litre) by SmartSeal based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Roof Cleaner Bio Wash and the best cost-to-value ratio is Autoglym Convertible Soft Top Clean & Protect Complete Kit - Convertible Roof Cleaner, Protector and Waterproofer - Fabric and Canvas Soft Top Moss, Mould & Stain Remover - Car Canvas Repair & Restoreat Autoglym with a 20% discount.
Our list of the best Roof Cleaner Bio Wash is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Roof Cleaner Bio Wash in The UK

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Jarder Ultra Strong Roof Cleaner 5L - Removes Mould, Dirt, Black Spot and More - Super Concentrated Formula

We scanned 226 products

We concluded that: