It's all up to the manufacturer. Especially check the allowed room
temperature and relative humidity limits for the warrantee to be valid. Mine
were 50 to 80 deg F and 35 to 65 % RH. My RH was below 35% for a long time,
the floor cupped and split and the mfr said "Sorry Charlie, the problem is
yours." This was for a floor glued to a plywood subfloor, and only took 2 to
3 months from installation to become visible. I wood personally be worried
more about the above floor conditions. The manufacturer is the final judge.

"chris" wrote in message
ps.com...
I'm really attracted to bamboo flooring for my dining room/kitchen
area. Can it be successfully laid over a concrete floor? I hear
conflicting advice. One said that it must be glued to the floor, but
there's no guarantee that it won't move. A search of message boards
suggests that it's probably ok. Grateful for any advice!
Thanks
Chris