What are the Advantages of Fiberglass Flagpoles? There is a reason fiberglass dominates modern boat building. It stands up to time and the elements better than any other material, all while being lighter and more flexible in construction capability. It also means there is no better material with which to construct flagpoles, and we are the experts, having been at it for nearly 50 years. Fiberglass is lightweight, won’t rust, pit or corrode, holds its finish longer than any other material, is non-conductive so won’t be a problem in electrical storms and can be finished with a variety of color coatings to meet your personal preference. Zeus Flagpoles are the king of the coast. If they best the weather along our American shorelines, imagine how well they will hold up in your neck of the woods.