Flagstone: Slate, Quarzite, and Sandstone
Flagstone is a generic term applied to stone comprised of various materials like clay, sand, and shale that is easily split into layers. Yet, flagstone's like quartzite, slate and sandstone are quite different. For a few months, newer floors can feel slightly gritty. It is normal for clay-enriched slate and some sandstones to delaminate (separate in layers). Flagstone is more susceptible to mineral build-up and weathering where exposed regularly to water and the elements. A more viscous enhancer-sealer is best for most flagstones. They repel liquids and provide better protection, and also enrich the stone’s natural colors.
Quartzite, slate and sandstone can be used either inside or outside a home. Depending on the sealing process, Flagstone needs maintenance every 1 - 3 years depending on wear, location, type, and care. Some maintenance tips follow: