Gel coat is used as an in mold coating on composite parts to produce a durable part surface. We stock a wide variety of colors in marine and tooling gelcoat. Gelcoat derives its name due to it high viscosity and ability to be applied thickly on vertical and overhead surfaces in one coat. Gel coat is air inhibited and cures tacky on the surface to bond with the lamination. For top coating with gelcoat you will need to use Duratec High Gloss additive or Surface Agent to get a tack free cure. To help estimate the amount of gelcoat that you’ll need check out our Gelcoat Calculator here: Gelcoat Calculator