{"items": [{"author": "Michael", "source_link": "https://plus.google.com/110347619670230195222", "anchor": "gp-1331748631955", "service": "gp", "text": "At some point, you have to have \nsome\n interface between the climate-controlled inside, and the uncontrolled outside. At the point you're considering a bubble roof, why not skip straight to a green roof*?\n
\n
\n* \nhttp://en.wikipedia.org/wiki/Green_roof", "timestamp": 1331748631}, {"author": "Chris", "source_link": "https://plus.google.com/117346402173047680184", "anchor": "gp-1331749046059", "service": "gp", "text": "Or just paint it white. Though I think if you can use it for growing urban food, that would be astoundingly awesome.", "timestamp": 1331749046}, {"author": "Michael", "source_link": "https://plus.google.com/110347619670230195222", "anchor": "gp-1331749401345", "service": "gp", "text": "Painting it white only covers the thermal aspects, which are nice, but ignores the stormwater/greywater benefits, which can be very substantial, especially in older cities like Philadelphia, where reducing stormwater load on the sewers is the city's #1 infrastructure priority, with billions of dollars at stake.", "timestamp": 1331749401}, {"author": "Jeff Kaufman", "source_link": "https://plus.google.com/103013777355236494008", "anchor": "gp-1331752632085", "service": "gp", "text": "@MN\n One advantage of a bubble roof over a green roof would be less leaking. Flat roofs tend to leak, and I don't think greening them helps with that aspect.", "timestamp": 1331752632}, {"author": "Michael", "source_link": "https://plus.google.com/110347619670230195222", "anchor": "gp-1331753768627", "service": "gp", "text": "Green roofs have to be sealed \nmuch\n more exactingly than standard flat roofs; if they're not, then you will have plant roots infiltrating and destroying the roof structure. If your green roof is leaking, you don't just have a problem on your hands, you have a slow moving catastrophe.", "timestamp": 1331753768}, {"author": "Todd", "source_link": "https://plus.google.com/112947709146257842066", "anchor": "gp-1331788402363", "service": "gp", "text": "@Chris\n
\n\"I see a red roof, and I want it painted white.\n
\nNo colors any more, I want them to turn white.\"", "timestamp": 1331788402}, {"author": "Julia", "source_link": "https://plus.google.com/114588710186521489410", "anchor": "gp-1331934081526", "service": "gp", "text": "Being full of dirt, water, and plants, green roofs are also quite heavy. Your roof might well not be built to hold up something like that, regardless of leaks.", "timestamp": 1331934081}, {"author": "Jeff Kaufman", "source_link": "https://plus.google.com/103013777355236494008", "anchor": "gp-1332008695411", "service": "gp", "text": "@Lucas\n I'd thought snow would just slide off, but thinking more you'd need quite a high bubble for that. Bother.", "timestamp": 1332008695}]}