Possible mold in closet
This discoloration appears in the corner of a closet on the second floor. The exterior to this closet is one corner of the house. I cannot recall if it was there when we moved in 15 years ago. Only noticed now due to closet cleaning. The drywall and tape is firm, dry, and odorless -- not soft or damp as I would expect with water damage. Does this look like mold?
I intend to simply put a layer of compound over it, then KILZ 2 primer and paint. Should I be doing more?
u/xkcd1133 — 23 hours ago