[John C]

Yes, I removed mine and painted the roof instead of re-lining it (easier to clean).

 

[John C]

It's a combination of humidty and wind, the wind causes the fabric to seperate from the foam.

 

[John C]

Yep, what I did was use the vacuum and a brush to remove the loose foam (or whatever it is). Then I wiped it down as best I could with a cloth. Then applied 4 coats of white garage floor paint and voila... it came out very nice. I'll try and get some pics this weekend.