How do I remove moss from roof tiles?
Generally speaking, concrete roofing needs little or no maintenance. Depending on location and surroundings, moss and algae can grow on almost anything. A northern aspect is always more prone than is a southern. Nearby large trees can promote growth. One good way of keeping a roof clean and attractive is to use Bender Tak och Markrent (Benders’ roof and stone/slab cleaner). This is applied using a pressure hose. The rain then takes care of the rest. Our cleaning agent kills both moss and algae. The treatment should be repeated every four years. You can download the product data sheet for Bender Tak och Markrent here (PDF, 214 kB).