I am using 1×4 and 1×6 cedar boards to trim-out an opening in 8-inch concrete walls (for a glass slider). LINK TO PHOTO:
https://images.finehomebuilding.com/app/uploads/2019/01/27193241/cedarboard45.JPG
What’s the best way to prevent water from soaking into the top of the vertical cedar board? All ideas welcome.
Thanks! Crackshot.