You know, like this ...
[I like seeing a peek of the original porch ceiling color - who would have thought it used to be such a bold shade?]
I'm a little embarrassed to say it has indeed taken me -this- long to find a round-to-it to plug up these unsightly holes. I blame their location - out of sight, out of mind - because I don't often walk across my porch looking up at the ceiling.
Aaaaaanyways ... today was the day! I even had everything in place to take care of business. No extra runs to the home improvement store necessary!
After cutting a piece of shim to size plugging up the narrow slit and plugging the drill hole with a piece of dowel I decided to mix up a small batch of Bondo to fill up the remaining spaces. I wanted to carve the channels of the beadboard into the patched surface and Bondo would take better to this kind of treatment than ordinary wood filler.
Here we are, with all holes plugged up. It's looking better already - who'd have thought!
Next: paint! However, since that's exterior paint we're talking about this opens a whole other pandora box ... stay tuned!