Greetings!

We are looking for the best roofing option for our London-based dealership garage nowadays. In the beginning, we are planning to repair the previous Asphalt shingles but then the roofing experts suggested us to replace the roof because this repair wouldn't be long last. That's why I am looking to install metal roofing. Though it is expensive but according to roofing experts, it would be durable. 

On the contrary, after reading this article about green roofs, I am in the favor of green roofs. Actually, I am an environmentalist and always prefer to go with green building ideas. This source is referring to a detailed flipbook that tells everything about green roofing. However, probably, I would need to discuss its implementation with any LEED-certified architect. I am not how it is going to work but I am hopeful for its success. Ford is already using the green roof for its dealership and its idea inspires many people. Yes, I am also one of them. 

By the way, if we only go with shingle or metal roofs then any of these London-based roofing services can assist us with our budget. Yes, I am negotiating different roofing companies and probably I will prefer the local ones. But yes, I always like to get suggestions from different roofing experts on such matters. 

What are your views in this regard? Do you think metal roofing is the perfect choice for garage roofing?

Waiting for your serious suggestions.