All the doors shown here are built in my shop using full mortise and tenon joints, waterproof glue, insulated glass, and 100% silicone weatherstripping and sweeps. The surrounding woodwork is also built in the shop, and every piece of lumber and molding is backprimed, every joint assembled with glue. This results in a paint job that lasts and lasts.
The main advantages of a custom door over a factory door are appearance and durability. Appearance because the moldings, panel profiles, and detailing have much more clarity and depth; it just looks hand made. Durability because they are built with top quality, straight grained lumber, and will not delaminate or twist.
These doors face North and have no overhang. Consequently, they take a real beating from the weather. I built these to replace a pair of factory doors that had quickly delaminated under the tough conditions. They are on their second decade and show very little wear. Architect: Pierre Belheumer. General Contractor: Renaissance Builders