--- product_id: 90561603 title: "SmartSeal Green Clear Pro - 25L - Concentrated Biocide & Green Growth Remover. Spray and Leave Roof Tile Cleaner, Patio Cleaner & Algae Remover. For Use on Concrete, Wood, Decking & Stone" brand: "smartseal" price: "4397.18 DT" currency: TND in_stock: true reviews_count: 8 category: "Smart Seal" url: https://www.desertcart.tn/products/90561603-smartseal-green-clear-pro-25l-concentrated-biocide-and-green-growth store_origin: TN region: Tunisia --- # kills & inhibits green growth 25L concentrated power spray & leave, no pressure wash SmartSeal Green Clear Pro - 25L - Concentrated Biocide & Green Growth Remover. Spray and Leave Roof Tile Cleaner, Patio Cleaner & Algae Remover. For Use on Concrete, Wood, Decking & Stone **Brand:** smartseal **Price:** 4397.18 DT **Availability:** βœ… In Stock ## Summary > 🌿 Effortless green growth control that works while you relax! ## Quick Answers - **What is this?** SmartSeal Green Clear Pro - 25L - Concentrated Biocide & Green Growth Remover. Spray and Leave Roof Tile Cleaner, Patio Cleaner & Algae Remover. For Use on Concrete, Wood, Decking & Stone by smartseal - **How much does it cost?** 4397.18 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/90561603-smartseal-green-clear-pro-25l-concentrated-biocide-and-green-growth) ## Best For - smartseal enthusiasts ## Why This Product - Trusted smartseal brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Generous Coverage:** One 25L container treats up to 240mΒ², making it ideal for large patios, roofs, and driveways without frequent refills. - β€’ **Trade-Grade Strength:** HSE-approved biocide trusted by professionals and homeowners alike for deep green growth eradication. - β€’ **Effortless Application:** Spray and walk awayβ€”no rinsing or pressure washing required, saving you time and hassle. - β€’ **Long-Lasting Protection:** Kills algae, moss, lichen, and mould while preventing regrowth for months of pristine outdoor surfaces. - β€’ **Versatile Surface Compatibility:** Effective on concrete, wood, decking, stone, UPVC, render, and moreβ€”one solution for all your outdoor cleaning needs. ## Overview SmartSeal Green Clear Pro is a professional-grade, HSE-approved 25L concentrated biocide designed to kill and prevent algae, moss, lichen, and mould on a wide range of outdoor surfaces. Its spray-and-leave formula requires no pressure washing or rinsing, offering up to 240mΒ² coverage per container. Trusted by tradespeople and homeowners, it delivers visible results within days and long-lasting protection, making it the ultimate solution for maintaining clean, vibrant patios, roofs, decking, and more. ## Description Great prices on your favourite Gardening brands, and free delivery on eligible orders. Review: This is brilliant and a fraction of the price of the bigger brands and works at lower temps - This works, you can use it above 0 degrees C, Moss clear you need to use above 8 deg C so you can get this on your green stuff earlier on the year and it will work. I sprayed this on our render, decking and patio, within 24 hours the algae had started to clear, the rest of it was gone within a week and it seemed to continue workign beyond that as these things continued to clear. Review: Works... eventually - I applied this to a very mossy garage roof last September, having bought it a few weeks before. I followed the instructions and waited until the temperature was below (i think I recall correctly, but read the instructions yourself) 20 degrees celsius. We bought the house 3 years ago and I suspect there was 20+ years of moss and lichen on the garage roof. It is now the following April and until about three weeks ago, I thought that the product had been useless: no loss of moss/lichen and the roof looked just as awful. However, my ex-farmer friend visited and when I told him SmartSeal had not worked, he said "yes it has!". He pointed out that it was dry and dead, but still affixed to the roof. All it needed was a scrape with a stiff brush, or, I'm hoping, the drying effects of the sun plus some wind might remove it entirely (it has been an exceptionally wet winter in the UK). ## Features - Professional Grade Biocide: Green Clear Pro is an HSE-approved biocide and considered the ultimate green growth remover by the trade and general public for killing black lichen, mould, algae & mildew on driveways, patios, roofs & walls. It is also an effective green algae remover for patios, a garden furniture cleaner & patio algae remover for sandstone, limestone and porcelain - Multi-Use Formula: Green Clear Pro is a versatile, high-strength spray and leave green growth remover that can be used as a composite decking cleaner, upvc cleaner, wood cleaner, render cleaner or natural stone cleaner. It also works well as a wet and walk-away roof tile cleaner, patio furniture cleaner, artificial grass cleaner and porcelain patio cleaner - Kills & Inhibits Regrowth: Whether you are looking for a tarmac cleaner, wall cleaner, render cleaner, patio slab cleaner or just a decking algae remover, this powerful wood mould remover and green algae remover will kill unwanted green growth on patios, driveways, walls and roofs. Simply spray and walk away to keep your outdoor surfaces looking good at all times - No Pressure Washing Required: The trade-strength green algae remover is a spray and leave outdoor cleaner that kills mould lichen and green growth on most hard surfaces, such as roof tiles, render, masonry, brickwork, tarmac, concrete, cement and natural stone. Simply spray and walk away, and the no rinse patio cleaner will do its work over a period of weeks - Coverage & Application: 5L will treat up to 240m2. The concentrated spray cleaner is an algae remover, lichen remover and wet and leave patio cleaner that should be applied by sprayer or watering can. Green Clear does not contain bleaches or acids, and for best results, dilute with water at a ratio of 1:5 for heavy contamination, 1:10 for regular use & 1:20 to prevent regrowth ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01BTXIHIS | | Active Ingredients | green algae | | Active ingredients | green algae | | Best Sellers Rank | 18,421 in Garden ( See Top 100 in Garden ) 105 in Moss Control | | Brand | SmartSeal | | Brand Name | SmartSeal | | Country of Origin | United Kingdom | | Coverage | 240 square meters | | Customer Reviews | 4.3 out of 5 stars 119 Reviews | | Included Components | Product only | | Item Form | Liquid | | Item Weight | 25 Kilograms | | Item form | Liquid | | Item weight | 25 Kilograms | | Liquid Volume | 25 Litres | | Liquid volume | 25 Litres | | Number of Packs | 1 | | Part Number | sm-mcp-25 | | Unit Count | 25000.0 millilitre | | Unit count | 25000.0 millilitre | ## Product Details - **Active ingredients:** green algae - **Brand:** SmartSeal - **Item form:** Liquid - **Item weight:** 25 Kilograms - **Liquid volume:** 25 Litres ## Images ![SmartSeal Green Clear Pro - 25L - Concentrated Biocide & Green Growth Remover. Spray and Leave Roof Tile Cleaner, Patio Cleaner & Algae Remover. For Use on Concrete, Wood, Decking & Stone - Image 1](https://m.media-amazon.com/images/I/81mpUvVVyHL.jpg) ![SmartSeal Green Clear Pro - 25L - Concentrated Biocide & Green Growth Remover. Spray and Leave Roof Tile Cleaner, Patio Cleaner & Algae Remover. For Use on Concrete, Wood, Decking & Stone - Image 2](https://m.media-amazon.com/images/I/61jzcWc2w6L.jpg) ![SmartSeal Green Clear Pro - 25L - Concentrated Biocide & Green Growth Remover. Spray and Leave Roof Tile Cleaner, Patio Cleaner & Algae Remover. For Use on Concrete, Wood, Decking & Stone - Image 3](https://m.media-amazon.com/images/I/71f9n9+ISNL.jpg) ![SmartSeal Green Clear Pro - 25L - Concentrated Biocide & Green Growth Remover. Spray and Leave Roof Tile Cleaner, Patio Cleaner & Algae Remover. For Use on Concrete, Wood, Decking & Stone - Image 4](https://m.media-amazon.com/images/I/71Br7ynRWyL.jpg) ![SmartSeal Green Clear Pro - 25L - Concentrated Biocide & Green Growth Remover. Spray and Leave Roof Tile Cleaner, Patio Cleaner & Algae Remover. For Use on Concrete, Wood, Decking & Stone - Image 5](https://m.media-amazon.com/images/I/71jtq-BTiEL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can it be effective for red & black algae on cream-rendered exterior walls, without damaging the render finish?** A: Green Clear PRO can be used to kill and remove red and black algae on cream coloured render. A soft brush can be used to remove organic growth on badly contaminated areas. **Q: How would your product be applied to a house roof?** A: Green Clear PRO is usually applied by a sprayer. In the case of house roofs, depending on access, it can be sprayed from a ladder or scaffolding. If the roof is not that high, then it can be applied using a sprayer and an extendable lance. **Q: Does it also clear weeds, please?** A: Green Clear may kill some types of weeds, but is not regarded as a weed killer. It would be best to purchase a specific weed killer for that purpose. **Q: Is this product animal/bird friendly?** A: We would not classify the Green Clear Pro as animal or bird-friendly immediately after application. Once dry, it is totally safe for birds and other animals to walk on. **Q: Is the product acidic?** A: No, Green Clear is not acidic. ## Customer Reviews ### ⭐⭐⭐⭐⭐ This is brilliant and a fraction of the price of the bigger brands and works at lower temps *by M***N on 5 May 2026* This works, you can use it above 0 degrees C, Moss clear you need to use above 8 deg C so you can get this on your green stuff earlier on the year and it will work. I sprayed this on our render, decking and patio, within 24 hours the algae had started to clear, the rest of it was gone within a week and it seemed to continue workign beyond that as these things continued to clear. ### ⭐⭐⭐⭐ Works... eventually *by P***E on 8 April 2026* I applied this to a very mossy garage roof last September, having bought it a few weeks before. I followed the instructions and waited until the temperature was below (i think I recall correctly, but read the instructions yourself) 20 degrees celsius. We bought the house 3 years ago and I suspect there was 20+ years of moss and lichen on the garage roof. It is now the following April and until about three weeks ago, I thought that the product had been useless: no loss of moss/lichen and the roof looked just as awful. However, my ex-farmer friend visited and when I told him SmartSeal had not worked, he said "yes it has!". He pointed out that it was dry and dead, but still affixed to the roof. All it needed was a scrape with a stiff brush, or, I'm hoping, the drying effects of the sun plus some wind might remove it entirely (it has been an exceptionally wet winter in the UK). ### ⭐⭐⭐⭐⭐ Astonishingly effective biocide *by A***C on 11 June 2026* Astonishingly effective biocide. I have an outside wall that has bushes close to it, and which was covered with an unsightly green growth. I used one application and had low expectations of its effectiveness. But two weeks later the growth was gone, the wall was back to white, and a year on the growth hasn't returned. ## Frequently Bought Together - SmartSeal Green Clear Pro - Powerful Green Algae Remover - Easy To Apply Best Mould, Lichen & Black Mould Remover - Perfect Roof Cleaner & Driveway Cleaner - (25 Litres) - Spear & Jackson 5LPAPS 5 Litre Pump Action Pressure Sprayer --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/90561603-smartseal-green-clear-pro-25l-concentrated-biocide-and-green-growth](https://www.desertcart.tn/products/90561603-smartseal-green-clear-pro-25l-concentrated-biocide-and-green-growth) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-19*