fj12ryder wrote:
You have to have air pressure under the roof for it to rise:
"The difference in pressure between the bottom and top of the wing results in more pressure at the bottom, thus pushing the wing upward into the sky. This is lift."
Notice the word "difference". With no difference in pressure there is no lift.
I think you're implying an increased air pressure under the roof causes it to billow up, which may be true at times. However I believe a reduced air pressure above the roof can lift the roof - "suck it up".
But to your point of "difference in pressure" ... yes.
Bernoulli was a pretty smart guy. :)