Limestone is a sedimentary stone that is more porous than most other stones. It is at the opposite end of granite in terms of hardness. Like marble, limestone is rich in calcium. It is formed from the accumulation of finely eroded rock particles that is cemented together by calcium and other types of minerals. Usually, limestone has a honed or matte finish (versus a polished marble) and rougher in surface texture. These stones are known for their inherent variations in color, texture (surface) and finish. Depending upon wear, location, type, and care, limestone will need professional maintenance every 1 – 3 years.
Depending on the type of limestone, care must be taken during cleaning. Thorough vacuuming and mopping with clean water and neutral pH soap inhibit dirt and soil build-up. Every few months, bleach can be used to keep these more textured stones (even sanded grout) cleaner, and lighter and brighter in appearance.