It is something to do rarely. We scrape the moss from roofs using scraper blades and treat the remaining organic matter with a biocide chemical which should last a number of years. You can have repeat treatments to keep the roof clean indefinitely.
It is something to do rarely. We scrape the moss from roofs using scraper blades and treat the remaining organic matter with a biocide chemical which should last a number of years. You can have repeat treatments to keep the roof clean indefinitely.