Replacing rotted or rusted exterior doors is a skill achieved through experience. There are a number of factors such as the dimension of the opening, square and plumb, direction of swing and hardware selection which most carpenters will consider.
At John Grey Painting we are also interested in the factors which have contributed to the failure of the existing door. We would hope to resolve the related cause in order to achieve a long lasting and quality repair. Water issues, settling and insect activity are possibilities to investigate. For example you may have to redirect or divert water runoff to protect the new door and increase its life.
Interior doors have a different set of factors which contribute to failure. On the job experience may lead to quickly solving these problems. Broken hardware, chipped or cracking trim boards, and damaged surfaces can often be repaired rather than replaced.