Masking Tape Meets Siding
When installing some board-and-batten siding recently, I got to use the masking-tape caulk method. I put a piece of tape on the back side of a batten that had a knothole in it. Then from the front, I put Vulkem 116 caulk in the knothole and smoothed it out with my finger. The tape at the back kept the caulk from oozing all over the place.