We live in an area where moss on roofs is prevalant. How does your roofing material hold up under wet, damp conditions and what precautions need to be taken to prevent moss build-up?

Our tiles hold up very well in the type of climate that you described but, unfortunately, we can offer no magic solution for avoiding the growth of moss on the roof. The good news is that there is no indication that moss or algae do any harm to the concrete tiles themselves. Small amounts of moss on a roof are not a problem but, left unchecked, moss will continue to grow and may eventually block and divert water flow, thus diminishing the watershedding capacity of the roof. Periodic cleaning of the roof can prevent this and the use of biocides or zinc strips may be incorporated to slow the growth of these organisms. I am especially interested in what the UL rating is Concrete roof tiles are one of the most hail resistant, mainstream roofing products in the world and MonierLifetile currently warrants against hail damage up to 1 1/2" hailstones. Lightweight tiles are not as resistant to hail as our standard weight products but still perform better than most materials. There are no ...  more