Comment on Ultra-white ceramic cools buildings with record-high 99.6% reflectivity
0ddysseus@lemmy.world 7 months agoTrees? Not many. Grasses, herbs, wildflowers, and shrubs? Tons of them. And you can pretty easily retrofit over an existing sloped roof. And the weight is no more than a tiled roof.
Kusimulkku@lemm.ee 7 months ago
Wetness could pose a problem to the structure
0ddysseus@lemmy.world 7 months ago
Not if you use a waterproof base layer. This isn’t some theoretical thing, its tried and tested technology in common use
Kusimulkku@lemm.ee 7 months ago
Well of course you’d use waterproof base layer, typically you’d use several even without the plants. It’s tried and tested with multiple cases of failing with age. That’s the issue. Even just flat roofs have been a failure point even without the plants but soil and plants are a definite concern for builders when talking long term.
0ddysseus@lemmy.world 7 months ago
Are you a builder? Do you have any experience installing and maintaining green roofs? Your assertion than you’d typically use several waterproofing layers suggests not. I have experience building these systems in the real world and the documentation to support their use. BTW - flat roofs aren’t a thing. Expect in traditional building in desert areas. “Flat” roofs aren’t flat.