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Methods for Finishing Cultured Marble

Cultured marble is a common building material for residential bathroom and kitchens, often used to create bathtubs, bathroom vanities and sinks. Cultured marble is made from the resin of fiberglass that is mixed with limestone and can be stronger than real marble. It is typically built to be very durable to withstand heavy use that could cause cracks and stains in other building materials. There are different methods for finishing cultured marble before installation and for refinishing if it is damaged or loses its luster.
  1. Factory Finishing: Color, Consistency and Shape

    • Cultured marble finishing methods vary by maker. Typically a manufacturer will use a specific pouring technique and coloring formula to create the texture, color and shine of the cultured marble. Different cultured marble makers also use specific molds to create the desired shapes. These molds are often particular to a company. These methods and the color palettes used are also often proprietary and differ by company or manufacturer.

    Factory Finishing: Veining

    • Another more advanced finishing method for cultured marble is called veining. Veining is the process whereby manufacturers create veins that mimic or expand upon real marble veining. There are different methods of veining that may include multi-color veining, stretch veining, chop veining and others. Many different colors and effects can be achieved by the veining process.

    Refinishing With A Buffer

    • Although cultured marble is designed to maintain its luster even under heavy use, abrasive cleaners and general wear and tear over time can damage it and cause it to become dull and scratched. There are different methods for refinishing cultured marble. One common technique is to use an automotive finishing compound that is first worked in by hand and then buffed by a high-speed buffer with a wool pad attachment.

    Refinishing With Kits

    • Another way to refinish a cultured marble piece with scratches or cracks is to purchase a refinishing kit. Typically these kits come with a cultured marble patch and a liquid hardener, much like the resin used to manufacture cultured marble. The consumer purchases color tints that match the piece that needs refinishing. One thing to keep in mind with refinishing kits is that the veining in new cultured marble cannot be duplicated by this process.