If you look around your local areas you will find 80-90% of homes roofs are covered in unsightly moss and algae. Not only does this look unpleasant to the eye heavy moss growth on the roof can cause damage to your roof over time. The moss acts like a sponge soaking up the moisture in the air and rainwater. When the moss then freezes, it expands on the surface which can then lead to cracking in your roofs pointing, lifting of tiles. We have also seen moss eat its way into tiles leading to the surface becoming defaced.