The Weight of a Soapstone Sink

About Soapstone

• Soapstone is composed of magnetite, dolomite, chlorite and talc. Talc, a naturally occurring mineral, gives soapstone its soft, soapy texture. There are two varieties of soapstone. One, commonly used by sculptors, has a talc rating average 75 to 80 percent. The other, architectural soapstone or stearite, has a lower talc content and works well in countertop, sink, cookware and architectural design. Like other natural stones such as granite and marble, soapstone is mined; but its density and weight, attributable to the talc conent, are far greater. (Reference 6)

For Sinks

• Soapstone sinks are prefabricated from slabs or carved from a solid block. Joints in prefabricated sinks are sealed with epoxy-type glues; though durable, wear and tear can dry out the epoxy seal. Solid-carved soapstone sinks don't have joints, are installed as a single unit and are exceedingly heavy. If you choose a soapstone sink, according to the CounterSpecialty.com, expect to spend much more for the stone and shipping. Also, installation of a soapstone sink requires additional cabinet bracing to support the stone's weight. (Reference 4)

Benefits

• Soapstone is inert, an appealing quality of the stone. Acidic foods and alkaline cleaners won't react with the stone. It's also nonporous and stain-resistant. It remains warm to the touch, comes in green, brown or dark gray colors, all which deepen with age.Though the surface scratches easily, with a little fine steel wool and regular mineral oil application, the stone maintains a rich luster.

Weight

• According to the site, The Maine Soapstone Company, a square foot slab of soapstone with a 1-1/4-inch thickness can weigh more than 20 pounds, (Reference 1) 180 pounds per cubic . (Reference ) While sink design varies, it's not uncommon for a soapstone sink to weigh more than 200 pounds.(Resource 1)