Our Tesla Solarglass Roof is just about complete and it's experiencing one of it's first snowfalls. We'll check out to see how quickly the snow falls off the roof and whether it melts (and runs off as water) or whether it winds up as a large snow pile.
UPDATE: Just to clarify, the home was fully insulated during this shoot. There is foam insulation in the walls and blown insulation in the attics. In our climate, it would be extremely wasteful to heat a home under construction that was not insulated.
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