Apply high-quality exterior acrylic latex caulk, or silicone specifically designed to adhere to concrete, at the base of the post. Find out if it is okay to use expanding foam for setting fence posts.

His dilemma is that he’s replacing posts that were replacements for previous posts, and those replacements were set in concrete. Apparently, removing the original posts left very large holes ...

Whether installing a new fence or repairing the old, there are several ways to set a post, and there is a variety of factors to help you choose the right way.