Compare webshops (1)
Sponsored links · Some shops pay us a fee
Shops with other sizes
CLEARS GREEN FROM ROOFS AND PATHS: Grean Boss is a spray and leave algae remover that penetrates deep to break down green deposits on roof tiles and hard surfaces. Over the following days, the rain gradually washes them away PROTECTS YOUR ROOF: Green growth holds moisture, lifts tiles and blocks gutters and downpipes, which can shorten the life of your roof. This roof cleaner is safe on clay, concrete and slate tiles, including flat roofs FOR PATIOS, PATHS AND DRIVEWAYS: It also works on patios, garden paths, tarmac and resin driveways, helping keep the surfaces around your home clean and safer to walk on NO SCRUBBING OR PRESSURE WASHING: Apply it on a dry day and leave it to work. Green stains break down over 3 to 5 days as natural weathering takes effect, with no scrubbing, rinsing or high-pressure washing to damage your tiles GOES A LONG WAY: Dilute 1 part Grean Boss with 2 parts water for heavy growth, treating up to 60m², or with 3 parts water for light growth, treating up to 80m². It is biodegradable and acid-free, so it is gentle on stone, tiles and your garden