If YETI can make a cup that keeps water cold or hot for hours and a cooler that holds ice for hours, then why aren’t we building houses with that same material?
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Yeti cups are made by sealing a vacuum gap within a dual metal wall. This would be extremely difficult to do with a house. To start with, the longer a distance you have to span, the harder it is to keep air pressure from collapsing the cavity. Flat surfaces are also much harder to hold pressure than curved ones. A small, round yeti cup can pretty easily resist air pressure. A house on the other hand….
On top of this, any gap or connection would allow heat transfer. So that means one door and no windows for optimum insulation.
Really though, modern construction materials are quite good as far as insulation goes. Not yeti cup level, but they don’t really need to be.
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