Graemer, my male Aby has had two trips through the ceiling. I now have books and plywood holding down the corners of the tiles he can reach, so that he will not crawl all over the place and crash through the weak tiles.

Make sure you cat doesn't have a collar on because the first time Graemer did the trip, he got caught on a hanger section, holding the tile up! Scared me to death, so he no longer wears a collar.

Aren't cats fun?