For the most part, fiberglass statues(Fiberglass Sculpture) are the same as resin statues. Made from the threads of glass, fiberglass is created by forcing molten glass through a sieve that spins it into threads. However, since the fiberglass pours as a liquid, it reflects all the fine details of the mold. Concrete, on the other hand, is thick and grainy and does not penetrate well into the fine detail of a mold.
It is an ideal material for large sculptures because it is light enough that people can move statues made from it without the help of a crane. Fiberglass statues also cost considerably less to ship than concrete statues.
Of course, fiberglass is also very strong. It is reinforced and is the same material used to make boat hulls that are designed to withstand the shock and the elements of the sea without breaking. Concrete, while durable enough for outdoor applications, will break into pieces if hit or knocked over. Fiberglass is also a much less expensive medium.