Green roofings use this possibility and have actually shown to double and even triple the life span of your roof. The barrier of greenery helps shield the waterproof membrane layer below and ensure your roof's life expectancy lasts well for years. An effectively set up, irrigated and conserved living roofing must last for approximately 50 years. If the plants on your roofing are dying, or the weeds are taking over, you need to call P&amp