The Miniart buildings are injection molded, so I would guess what ever you use on your kits. I have one in the stash, though not built any yet, and I was just planning on using my normal glue.
Just for future reference, this sort of thing might be better off in the Diorama's section.
I am a Norfolk man and i glory in being so
On the bench: Airfix 1/72nd Harrier GR.3/Fujimi 1/72nd Ju 87D-3