so i got to thinking today that i would like to add sliding doors to my enclosure but i have no experience with them and just had the question will they hold humidity?
I do not know first hand, but would "imagine" is the seal on the sliders is good then yes, it should hold....I mean, even human sliders have stripping that allows for a good seal...you know what I mean?
Yes, sliding doors will still keep humidity in the chamber.
Look at all those who use vision cages. They have sliding doors.
And @Tom uses sliding doors on his chambers, too.