What goes into creating a rooftop garden and outdoor space? A whole lot of work, time and money!Michael Hupf from Lifescape Colorado in partnership with Associated Landscape Contractors of Colorado takes us to the top of one of downtown Denver's most pristine high-rise buildings to explain the engineering that goes into building a rooftop garden and outdoor living room.There's so much to think about when creating a rooftop garden, especially the additional weight from the soil, the planters, the roof canopy as well as the rain and snow! Specific draining must be installed to allow for the additional weight.A rooftop patio space along with the plantings are typically two to three times more expensive as a normal landscape on the ground.Watch the video below to see all of the elements that go into making a rooftop garden happen. Looking to create a rooftop garden? Here's what goes into building one