Which of the following functions does gel coat NOT provide?

Gel coat serves several important functions in composite materials, particularly in marine applications. It is primarily known for providing a cosmetic finish, which enhances the appearance of the surface and can be added in various colors. Additionally, gel coat contributes to water tightness, helping to protect the underlying laminate from water absorption and providing a barrier against environmental elements.

Another key function of gel coat is facilitating release from molds during the manufacturing process. When a composite part is created, gel coat is applied to the mold surface, allowing for a smooth finish and ease in the demolding process after curing.

However, gel coat does not provide electrical insulation. While it may have some dielectric properties due to its composition, it is not designed for this purpose and does not effectively serve as a reliable insulator for electrical applications. Therefore, electrical insulation is not considered a function of gel coat.