Post footings are an integral part of any structure and need to be properly reinforced if they are going to provide adequate support. Rebar, or reinforcing steel bars, is one of the most commonly used materials for this purpose. By tying the rebar into a latticework around the post footing before pouring concrete, you can significantly increase its strength and help it withstand increased pressure from lateral forces such as wind or soil expansion. Not only does using rebar add strength to your post foundation but it also helps protect against corrosion caused by moisture which can weaken a structure over time. While there may be some circumstances where post footings do not require rebar reinforcement, in general it is always best practice to use them when installing posts for fences and other structures around your home or business.