I am replacing my dryer exhaust vent. Here is a picture of the old one after I removed the cap.
I did my best to clean up the old caulking before adding the new tube and vent, which looks like this:
As you can see, it's not sealed very well against the brick. I'm not really sure how to go about that. I can't really just splork a bunch of caulking in there because the gaps are too big, especially in the grout lines.
The other side of the vent where the dryer hooks up is fairly well sealed, so I'm not too worried about that.
But for the outside, do I even need to worry about the sealing plastic cover against the brick? Or should I focus on sealing the metal tube, maybe with caulk or spray foam? The gaps around the tube are definitely caulkable, assuming I can take the plastic cover off the tube to get access.
Thoughts on approaches here?
FYI, I'm in Austin, TX and the dryer is located in the garage.