Why you should clean your roof:

1. Mosses store water and continuously pass this moisture onto the substructure. If mosses, moulds and lichens have collected on your roof, its protective cover dissolves over time. If this protective cover is permeable, water can penetrate and your roof tiles turns into the ideal candidate for cracks and chipping.

2. All building materials require protection from weathering! The basic prerequisite for a lasting roof coating is roof cleaning because the substrate needs to be clean and capable of bearing a coating – otherwise no paint will last.

When cleaning a roof, the original protection of the surface is blasted off and the surface becomes open pored. That is why a weathered roof needs a roof coating or roof impregnation after cleaning.