Hi,

I unstuck a friend's exterior porch door by simply belt sanding the
bottom of the door. The door had been sticking on the tiles for years.
Easy job, much kudos. Now, none of the bottom of the door had
previously been painted. I'm wondering whether I should paint or
otherwise treat the bottom of the door - especially being exterior
isn't it vulnerable to water ingress and future swelling or cracking?


Thanks

Clive