Green roofs offer this chance and have shown to increase and even three-way the life expectancy of your roof. The obstacle of greenery assists protect the water-proof membrane underneath and ensure your rooftop's life span lasts well for decades. A correctly installed, irrigated and conserved living roof covering need to last for approximately 50 years. If the plants on your roof covering are passing away, or the weeds are taking over, you need to call P&amp