Posted by Cav8andrew:
owlman, what was the bit of thought required? modification of the leading edge, slightly wider gap to frame or some other fiendish detail. We eventually put a slight chamfer on ours.

I eventually opted for a hybrid system door and frame inasmuch as the top and leading edge only was double rebate with the hinge side single, with compressible and high quality rebated weather tight joinery seals all round, and a slightly larger/deeper rebate. The striking side had the door and frame bench fitted which meant I could be a bit ambitious with chamfers on both door and outer frame edge so when closed they formed a nice small gap not a great unholy one. The reason for this solution was because of the choice of hinges and the constructional space available. The hinges were heavy duty but of standard design not some other fancy shape. I needed strength for this monster. The bottom edge was onto a stone cill so I fitted a walk over bulb type seal with a striker bar rebated into the door bottom. I did think of the automatic drop down seals but costs for this and other bits were getting out of hand. Anyway it worked and the acid test was one particularly windy day we lit a candle and held it to all the gaps and, not a flicker,-- a big relief.