This pigmented layer then co-reacts with the moulding resin during the curing cycle to become an integral part of the moulded product. Gelcoat thus provides continuous coloured surfaces without any subsequent finishing operation. Since it reproduces the mould surface exactly, the gelcoating procedure eliminates the fibre pattern which is sometimes objectionable in reinforced polyester parts. The Gelcoat will produce a mirror image of the mould surface and it is possible to produce anything from a porcelain-like finish to a grained textured pattern. The resin vehicles for Gelcoat formulations can be varied over the broad range of properties possible with polyester systems, depending on the type of the service required of the finished moulding. Gelcoat finishes are currently being widely used on boats, bath tubs, automobile and truck parts, furniture, luggage, swimming pools, chemical storage tanks and a variety of similar items.

This pigmented layer then co-reacts with the moulding resin during the curing cycle to become an integral part of the moulded product. Gelcoat thus provides continuous coloured surfaces without any subsequent finishing operation. Since it reproduces the mould surface exactly, the gelcoating procedure eliminates the fibre pattern which is sometimes objectionable in reinforced polyester parts. The Gelcoat will produce a mirror image of the mould surface and it is possible to produce anything from a porcelain-like finish to a grained textured pattern. The resin vehicles for Gelcoat formulations can be varied over the broad range of properties possible with polyester systems, depending on the type of the service required of the finished moulding. Gelcoat finishes are currently being widely used on boats, bath tubs, automobile and truck parts, furniture, luggage, swimming pools, chemical storage tanks and a variety of similar items.