I screened in my porch that has a concrete base using treated wood. The base is a 2x4 and is directly on the concrete. Since we get rain on that side of the house, I would like to keep the 2x4 as dry as possible and not sitting in water. Will caulking prevent the water from getting under it and rotting it out, or should I leave it so that the 2x4 can dry out on its own?
Thanks for any advice.