About Haysite Reinforced Plastics

Founded in 1954, Haysite Reinforced Plastics formulates and processes thermoset composite materials for high temperature insulation, corrosion resistance and lightweight structural support applications. Haysite sells its products into the power, transportation and industrial sectors, with customers in 30 different countries. A member of the Isovolta Group since July, 2018, Haysite is headquartered in Erie, PA.

Haysite's 100,000 square foot manufacturing facility is ideally suited for the manufacture of fiberglass reinforced polyester products. In 2013, the Haysite facility was remodeled to improve the quality, engineering, and office spaces. The interior renovation added 3,600 square-feet for a total project size of 15,200 square-feet, to better serve our customers.

Our offerings include over 25 different grades of sheet products in thicknesses from 1/32 to 2 inches, and a variety of sizes (including custom lengths) in addition to standard 4'x 8' sheet. UL recognized, NEMA, MIL. SPEC, and high temperature (220° C) materials are available.

Ultimately, Haysite’s depth of knowledge and experience in the composites industry sets us apart and comprises our clients’ greatest resource. Leveraging this Haysite difference ensures the right blend of material and process to optimize the end result—total customer satisfaction. 

Contact Haysite today  to find your composite solution.


  • 5599 New Perry Highway,
    Erie, PA 16509-3598
  • (814) 868-3691
  • (814) 864-7803
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