I have an exterior door where the door jamb was getting a sprinkler head spraying on it for a while and now it's rotted in the bottom 2-3".

I removed all the rotted and loose wood and have filled in with high quality structural wood epoxy putty from Abatron. I have used this product before and it's very strong. Once it cures I will then paint on a thin layer of liquid epoxy over the entire bottom jamb - old wood and new epoxy, then paint over.

The problem I have is not with the repair itself, but the location of the repair is at a spot where the back of the door will make contact with the repaired area when the door is closed. I have put masking tape on the door edge, as well as masking tape over the repair area for now, while I wait for the epoxy putty to cure. Once it's cured I plan to peel off the masking tape, sand it smooth then lay on a thin layer of liquid epoxy - now the question is once I did that, how will I be able to "protect" it to wait for it to cure? Or when I paint that edge? How would I avoid messing with it with the door edge? I can't leave the door open 24 hours because the jamb has to be left untouched...any tricks?

 

Is the door itself hitting the jamb or is there weatherstripping in the way? Except for weatherstripping [which is often removable] there should be a slight gap so maybe something needs to be sanded down a little. Pics might help us better understand what you are dealing with.