I haven’t seem much information on entry door construction, except that haunched tenons will help keep them flat, and the principles are the same as for cabinets, scaled up in size.
I do see a lot missing in such blanket statements, given building codes, climate considerations (impacting stability and home insulation).
Are there any books, websites or articles you can recommend that cover door construction in detail, including window selection and glazing, insulation, hardware for a variety of looks and designs?
For example, some doors aren’t a frame-and-panel construction. Some doors have large steel rivets.
Are door builders part of a secret society? 🙂