Ahhh.. ic. thx

Now that I've got this situation, i am motivated to closely inspect the
sealing surfaces of every single door i walk through, seeing what's
there and how it was sealed. Then I close it, test its fit, and then I
hold my hand out to the crack and see how much cold air is coming in.

I'm sure that people watch me do this and think i'm nuts or something.
The looks on their faces are comical :-D