Fiberglass constructed beams are versatile building materials, commonly used for construction applications. The I-beam design is physically lightweight yet it supports heavy duty weight capacities. A fiberglass beam is a useful alternative than other materials such as wood, due its corrosion resistance and low moisture absorption abilities. A fiberglass structure can consist of framework properties for buildings as they do not interfere with thermal and electrical conductivity. For more construction options, be sure to view our fiberglass sheets, fiberglass rods, and fiberglass angles.