What’s a green home without actual greenery? I wanted my eco-friendly house to feel more connected to nature, so I turned the flat stretches of roof into gardens. Rooftop flora is not only scenic, but it can also protect a home against temperature extremes, absorb carbon dioxide, and triple the life span of a roof.
Why bother with an unsightly and inefficient flat tar roof when you can look out the window at a teeming green garden? That's why I'm turning part of my roof green. I'll post more detail about what I'm growing and the DIY tray-based system I'm growing plants in, but before any of that can happen, the roof itself needs to be prepared to hold several inches of dirt without collapsing or flooding my upstairs. For that, I went with a multi-layer system: insulation, rigid roof board and a thermoplastic barrier.