Overlay exterior doors?
I am attempting to design/build an exterior door. It’s an experiment.
My question is regarding overlay (i.e. European style) doors and how they differ.
I don’t have tremendous experience with door installations (I know, why try to build one you might ask ;)) and I am having a hard time understanding the fundamental difference in the overlay door.
What I do understand is that they close ONTO the door frame on all four sides (rabbeted), and that this requires some different hinging (barrel, post, or rabbeted?). What I don’t really understand is how this is different than the ‘stop’ an inset door closes onto. The only difference I can see is that the inset has some more jam available to attach regular butt hinges to.
How is this inherently different from a weather/air sealing perspective? Does it come down to where the rabbet is located (i.e. overlay has the rabbet on the door, whereas inset is rabbeted on the jam?)
Additionally, at the threshold, an in-swing overlay door would seem to rely completely on the seal to stop water entry (i.e. sort of a reverse shingle effect where the bottom of the door is lower than the exterior sill). Is there a detail here I’m missing?
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