Is Limestone Durable and Should It be Sealed?
Limestone varies greatly in hardness, density, and porosity from one stone to the next. It would not be recommended to use it as a cutting board in a kitchen or to place household objects on it that may create scratches, such as key and canisters. There are some limestones that are very dense and hard, so they can be finished with a polished or a glossy shiny surface. On the contrary there are softer stones that cannot be polished to this high gloss finish naturally – and shouldn’t be. Simply said, limestone is “hard” to the touch, but not durable in a heavily utilized environment.
Generally speaking, limestone is very porous and will absorb liquids. It most definitely should be sealed regularly. The amount of porosity will vary depending on the type of limestone. Classic Marble Restoration, Inc. recommends cleaning and sealing your limestone surfaces at least once per year to ensure their intended aesthetics. We can also use a color-enhancing sealer to bring out the rich colors of your stone and subtly change its appearance. At times, limestone will become abraded and worn and will need stone restoration prior to sealing.