We have a knotty alder front door. It is south facing w/ a short overhang which does not do much to protect it. We are replacing it for the 3rd time due to cracks (thank goodness we’re not paying for it). The door is probably sealed with a urethane resin or something similar. We really don’t want to get a fiberglass door so we are trying one more time w/ wood. Do you think if it is finished with a marine/spar finish, it will be less likely to crack in 6 months? I would like this door to last a very long time. Any suggestion are most appreciated.
Finishing a wood exterior door.