Almost zero maintenance, robust, weatherproof and long-lasting — a highly resistant PREFA roof will provide a good service for many years to come. To maintain the functionality of the covering and flashings over the long term, regular maintenance checks are highly recommended. Particularly after harsh winter periods, storms or other extreme weather situations, checking the roof, façades and drainage systems is highly recommended. Regular cleaning of the rain gullies, gutters, rain water collectors and strainer baskets is also recommended.