I found some wood rot on the floor boards below a sliding patio door. On closer inspection I believe there is rot beneath the door. Replacing the floor boards is easy but how can I replace the wood rot beneath the door? I do not want to replace the door. I know how to remove the glass door panels but is is possible to remove the bottom track of the door and replace the rotted wood and then replace the track? Would it be possible to replace the wood beneath the door without removing the bottom track? Any ideas are appreciated.

Thanks

Missy