Fiberglass windows outperform wood, vinyl, and aluminum.
Every time. All the time. For a lifetime.
Fiberglass is a durable, energy efficient, low maintenance material superior to wood, vinyl and aluminum in many ways. Fiberglass is stronger and has nearly zero thermal expansion rate in comparison to vinyl. Compared to aluminum, fiberglass is far superior in thermal performance.
Fiberglass window frames can hold a heavier load without sacrificing performance or effecting weather resistance, thus allowing for larger window openings. Not only is fiberglass longer lasting and more energy efficient, it is environmentally friendly, made from partially recycled material and the plentiful natural resource of silica sand. The manufacturing process also uses less energy than that of other window materials.