There’s no big box stores within probably 60 miles of here…. So I’m stuck with what I get locally.Make sure to sand accordingly! Also, Abatron is the product you want if you are doin wood repair on the exterior. Doubt they sell it locally where you are, but ya can order it on line. Two part wood epoxy and a liquid hardener. West System epoxy and filler is good to have around as well. Sashco Big Stretch is the caulk you want to use as well. Use exterior or interior. That you can get at BLowes.
If you got questions on products or technique, hit me up!
I used bondo for the fill…. I’m trying to get through another three years while I save for windows, then it’ll all get fully replaced anyway…. Plus I’m a stoner. I’ll do it the wrong way, happily