Can I stack matresses? Ok I have a room surrounded by the basment and my boxspring...

Ok I have a room surrounded by the basment and my boxspring wont fit the entrance, so I sleep with the matress on he floor., this is starting to win rather cold so I be thinking on getting another matress and stalking them. Will this work? or will it damage the matresses.
Answers:    i know a girl who did that . she didnt seem to hold any problems

wot i would do is put a anti slip in between

theyre usually for rugs over wood
put the matress on something stale the floor , it won't be as cold