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Silmar® Brand
Resins and Clear
Gel Coats



Silmar countertopSilmar countertop
Silmar brand resins were acquired in 1993 by Interplastic Corporation and for over 40 years, we have been formulating isophthalic and orthophthalic polyester resins. Silmar is the brand recognized as the leader in today's casting resin market. We also manufacture a complete line of panel and molding resins.

Interplastic supports the Fiberglass Reinforced Plastics (FRP) and cast polymer/solid surface industries by directing all its technical ingenuity and manufacturing resources towards FRP and cast polymer applications. Our technical experts and laboratory testing facilities are available to work with you to formulate resins and gel coat systems for new applications or troubleshooting manufacturing issues.

When our Silmar and CoREZYN brand products are combined, we are able to offer our customers an extensive and impressive product line that can support nearly any FRP application. The Silmar brand products are manufactured in Fort Wright, Kentucky and Hawthorne, California. All of our products are supported by the most professional, well-trained distribution network available to the industry. We are your resin specialists.