Cultured marble is made from a combination of crushed limestone and polyester resin and the surface is sealed with a gel coat. Solid surface is made from a combination of plastics and crushed stones. Solid surface requires no protective sealants; the materials used in its construction are relatively non-porous. While cultured marble is poured into molds to provide shape, solid surface is formed into long boards that are cut and shaped after curing.
Both materials are durable and relatively resistant to cracking or chipping. They are also both stain-resistant, but cultured marble requires its gel coat to retain this property. Cultured marble is significantly lighter than natural marble, and more durable and stain resistant. Both materials can be fabricated in a wide range of colors or patterns.
Food should never be cut directly on cultured marble or solid surface countertops because, despite their durability, they are not completely resistant to etching and scratching. Both materials may also sustain damage from exposure to excessive temperatures; hot pots and pans should never come in direct contact with either of these materials for long periods of time.