How do you fill joints in a masonite surface??

Question

I'm using 1/8 inch masonite panels to form a lighting valence. The masonite panels are over a frame of 1x2's. What should I use to fill in the joints between the panels?? Should I stay away from drywall compound? I'm afraid the drywall compound will crack due to flexing of the panels. Any suggestions would be helpful.

Answer 1

I recommend latex caulking...