I use different glues for the actual structure and for the window glazing.
For the walls, roof and details, I use a liquid plastic cement such as Bondene or Plastic-weld (not the tube stuff). Usually, extra bracing isn't required if you use liberal amounts of glue applied from the inside. But, be careful, and don't touch the joint from the outside with your fingers, or that will wick the glue onto the outside surface and mar it.
But, for glazing I prefer a contact cement such as Walther's Goo or Plumber's Goop. Just a couple of dabs near the edges, well away from the visible portion, is all that's required.
It grabs quickly, and won't flow to where you don't want it. Also, these contact cements work on any kind of glazing from acetate, to styrene, to plexiglas (my choice), to actual glass (microscope slides).
Jim
