Green roofings supply this possibility and have shown to double or even three-way the life expectancy of your roof. The barrier of plant helps secure the water-proof membrane underneath and ensure your roof's life span lasts well for decades. A correctly installed, irrigated and kept living roofing system ought to last for approximately half a century. If the plants on your roof covering are passing away, or the weeds are taking control of, you need to call P&amp