Structure
Concrete products appear structurally sound at first, but over time corrosion and cracks caused by expansion and contraction severely affect the structural integrity of concrete. Fiberglass products are as structurally strong as concrete; in fact, the strength to weight ratio for fiberglass is astonishing. Unlike concrete, a fiberglass product that is 30 years old is just as structurally sound as it was the day it was made. Fiberglass products experience no loss in strength over time.

Corrosion
It is hard to give an average life span for precast concrete products since there are many factors that may cause deterioration at different rates. Concrete is susceptible to Microbial Induced Concrete Corrosion (MICC). MICC is a process by which sulfuric acid, found in most wastewater systems when hydrogen sulfide gas and bacteria react, attacks, and degrades the concrete. Fiberglass products are resistant against hydrogen sulfide and many other forms of corrosion. Simply stated, fiberglass will not corrode like concrete and has a much longer life span.

Installation
Fiberglass products typically weigh substantially less than precast concrete products, therefore installation is accomplished with less manpower and time. Additionally, in the rare occasion that a fiberglass product becomes damaged and needs repair, fiberglass can be field repaired much more easily than concrete, including on-site repairs.