Billowing Roof!

[1L243]

On the way home from our camping trip I noticed 3 different trailers going down the road with their roofs full of air! These were newer rigs too...If there was some way to let them know I would have.

I wonder how many of us tow our rigs oblivious to whats happening on the roof!

[ScottG]

You don't have to have loose edges - just a loose center area.
As you drive, the air moving over the top of the roof is moving faster than the air under it. The faster moving air has a lower pressure than the air underneath.
The result is "lift" and exactly how an airplance flies.

[1L243]

The ones I saw were just like a big ballon about 1 to 2 feet above the RV roof. No loose edges...

[Bumpyroad]

were the edges actually loose or was it just a "bubble" caused by vacuum on a rubber/tpo roof?
bumpy

[Paul_Clancy]

Saw this on a very expensive looking diesel pusher near Portland. Thought maybe cheaper trailers but apparently anything.

[keymastr]

All of us tow oblivious to what's happening on our roofs. Never had one I could see from inside the truck.

A couple years ago I saw lots of the billowing roofs but have not noticed one recently. I would like to have someone follow me down the freeway and see if mine does it. Not sure it makes a difference though, only way to fix it is to replace it and glue it down correctly.