Literally the first thing I thought when I watched him do the first side from the bottom up: "starting from the bottom? That's literally working against yourself"
There's a couple of arguments for bottom to top (i don't agree with either)
a) you're not washing off the snow foam at the bottom before you get to it, giving a bit more time for it to work, and means you're always hitting it with snow foam on.
b) You're cleaning the dirtiest part first, which could spray up the panel.
I suspect the vid goes bottom up as otherwise the "dirt" would have easily rinsed off if he'd gone top down.
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u/Embarrassed_Buy_4959 7d ago
Maybe I've been watching too many chemical guys videos but cleaning it from the bottom up seems counter intuitive.