For us, the breaking point came when the bottom threshold rotted out and water started seeping toward the subfloor after heavy rain. Continual repairs on a deteriorating door frame quickly become a money pit that only hides underlying moisture damage. A brand-new pre-hung door system gives you proper insulation, modern multi-point locks, and real seal integrity. I was browsing Top exterior entry doors toronto this July. to compare factory finishes versus painting yourself. Going pre-finished saved us tons of hassle, so definitely consider that if you make the switch.