At Glasspec, fiberglass product manufacturing is based on the use of a liquid material, typically a thermosetting polyester resin (vinylesters, urethanes and epoxies are also commonly used) in combination with randomly chopped, continuous strand and/or woven glass fibers. A chemical reaction initiated in the resin by means of a catalytic agent causes hardening to a strong lightweight final molded part, in which the resin serves as a substrate and the fibers as the reinforcement. Depending on the characteristics looked for in the final product, wall thickness fluctuates from 1/8" up to 3/4", and different ratios of glass to resin, varying loading of additives into the resin for fire retardant and other purposes, as well as different types of glass fibers are used. The high quality surface finish is obtained by the previous application of pigmented isothalic gelcoat on the mold surface; this gelcoat gives the product its color as it chemically bonds to the laminate when the laminate is applied. The standard surface finishes are smooth/glossy or textured/matte please refer to individual model description. Most catalog items can be weighted if required and/or modified to better suit the user; please inquire at the factory. For assistance in writing a specification, contact the factory with the applicable model number(s).