Allpro Pro Stretch Acrylic Urethane Sealant/Caulk (Tube, White)

I used this to fill gaps in our floor moulding on the ends and it match great with the white without painting. I also painted my ceiling white, taped off a 1/8 border around the top and used this instead of paint so no white would bleed under the tape onto my freshly painted gray wall. What a fabulous transition line it made between the two colors. This stuff is awesome.

Regular exterior caulking between old wooden boards and new wood boards failed as the new boards shrunk. I added this caulking to the gaps, repainted, and it still looks great.