00:00Why do German homeowners leave the AC off all summer, even in 95 degrees Fahrenheit heat?
00:05Here's the wild truth. It's not the AC, it's the house.
00:09They wrap homes like big, insulated thermoses.
00:12First, they wipe exterior brick clean of dirt.
00:15Then they stick these gray graphite foam panels straight onto the wall.
00:19Zero tiny gaps, not even a hairline split.
00:22If a piece is too big, they shave it down for a snug fit.
00:25Too small, they cut a fresh slab to fill the space tight.
00:28Hot air can't sneak indoors at all.
00:30Before installation, they slather heavy construction glue.
00:34Once pressed tight, panels stay fixed for years.
00:36It looks like gluing giant gray sponges.
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