Last week I got a new deck door installed.

The carpenter advised me to keep my old storm door
for it would protect the deck door from the elements. Also, since my
door is not standard size, if I wanted a new storm door, it, like the
deck door, would be custom ordered (meaning more money). He took my
storm door to a store and got new screens and glass for it. So I can
use the screens in the summer and the glass in the winter. He also got
new hardware for it (knob and closer). I think I will be painting my screen door white.

Anyway, I now need advice on how I should seal the narrow gaps between the drywall and inside door trim
(this was not part of the carpenter’s contract). I figured I could do
it myself. Before the carpenter put in the door, he put in quite a bit
of door insulation from a tube. He also put in a lot of flashing under
the new door threshold.

I was planning on using joint compound between the door trim and
drywall. But before I do this, should I stuff the gaps with regular
insulation, the type you get at Home Depot or Lowes that comes in a
roll? Or should I use something else? Or is this not the way to go?

I’ll really appreciate any feedback.

Below are some photos to give you an idea of what I’m trying to do.