HOw can I keep my kitty off the roof?

[AprilNewman]

I need help! My kitty is definitely an outside kitty. She loves it outside, and it's nice to just let her go outside when she's in the way (she chases my vacuum, it's hard to clean!). But she just keeps getting up on the roof of my apartment building. The last time, she was up there for 3 days before we could get her down!! I don't want to declaw her because she IS an outside kitty, it would be like a bee without a stinger... she'd be helpless if she got into a kitty fight. I just want to know if there is some way to keep her off the roof. There are only two ways she could get up there, I think. There are only two trees close enough to the building for her to climb. She's been up on the roof about, 4 times this last month! I don't like it! Anyone who can help?

[Traci]

Indoors ONLY