Over its estimated lifespan of 40 years a green roof would save about $200,000, of which, nearly two–thirds would come from reduced energy costs.

Adding more insulation during installation usually solves this problem, but that may increase costs. It also depends on whether the old roof was removed and you only have one layer of shingles, and if it is properly ventilated. Improves Stormwater Management So if you need a Flat Roof Replacement - choose High Tech Membrane Roofing of … Green roofs supplement traditional vegetation without disrupting urban infrastructure -- they take a neglected space and make it useful. It also depends on whether the old roof was removed and you only have one layer of shingles, and if it is properly ventilated. Metal roofs can be noisy, especially during a heavy rain or hailstorm. 3. This is why when you ask “how long does a roof last,” what you should really ask is “how long does an asphalt roof last?” Various roofing materials have different lifespans, along with their own unique pros and cons. Single ply membranes on flat roofs typically last for 20 – 30 years. ... investing in a metal roof only makes sense if you plan to stay in your home long enough to enjoy the cost benefits. Traditional asphalt roofing materials have an estimated life expectancy of roughly 12-20 years. Posted by P. Gilbert from Lansing, Michigan How much longer will a metal roof last than common roofing like asphalt or wood shingle? If the roof was installed over another layer or several layers and it is older than 20 years, chances are you need a new roof. Natural and engineering slate is the most long lasting options. We are planning a conservatory and have a sunny south facing garden. Metal roofs can last 40-70 years, depending on the material. While the life of a metal roof is much longer, investing in a metal roof only makes sense if you plan to stay in your home long enough to enjoy the cost benefits. Long popular in Europe, green rooftops have begun to appeal to homeowners, businesses and even cities as an attractive way to promote environmentalism while solving the problems of conventional roofs. Additionally, this natural protection against extreme heat enables green roofs to last twice as long as traditional rooftops. Would like as much information as possible as to the pros and cons of a conservatory. Noisiness. What's the lifespan of a Felt Roof?