Green roofings offer this opportunity and have proved to double or even three-way the life span of your roof. The obstacle of plant aids shield the waterproof membrane layer beneath and guarantee your roof's life span lasts well for years. A properly installed, irrigated and kept living roofing system must last for as much as 50 years. If the plants on your roof are passing away, or the weeds are taking control of, you need to call P&amp