We install both natural and synthetic slate roofs. Synthetic slates are made to look like real slate and are manufactured using metal, rubber, plastics & other products. If weight or cost is an issue synthetic slate might be the way to go. We buy our organic slate from the various slate producers in Vermont who produce the slate from there quarries in Vermont. Natural slate will last a lot longer than the synthetic slates but the cost can be a lot higher. Also weight has to be taken into consideration when installing the natural slate. We can help you decide which option is the best way to go for your specific project.