Topcoat is a synthetic resin used as a final top layer or finishing layer on a fiber-reinforced composite. Unlike gelcoat, topcoat is usually not applied as the first layer in a negative mold, but as the final coating on an existing laminate.
Topcoat is used to refine and seal the workpiece surface. It is processed without reinforcing fabric and therefore creates a smooth, clean and protected surface. Topcoat is available based on polyester resin and increasingly also as epoxy topcoat based on epoxy resin. it is used for GRP repair, gelcoat repair, pond construction, swimming pool construction, wood sealing e