Designing With Stone
Tuesday, November 15th, 2011Submitted by Annette M. Callari, Allied ASID; CMG
If you are in the market for natural stone flooring or counters for your home, this brief compilation of stone factoids is going to be very helpful. Just a little knowledge, before you narrow in on what’s right for you, may point you in the right direction. You’ve all studied the types of rock the earth renders, but it could be you haven’t had need for that information in a long time. So here is a brief refresher.
SEDIMENTARY – Igneous rocks make up the majority of the earth’s crust and are covered by a thin veneer of loose sediment. It’s this loose sediment that gets compacted and cemented together to give us sedimentary stone. Travertine and limestone fall into this category. Natural, unfilled travertine has tiny holes throughout the surface, indicative of sedimentary formations. Both travertine and limestone are very porous and will require continuing maintenance to keep them looking their best. Keep in mind, because they are so porous they are prone to staining so may not be the best choice for countertop applications. For floor applications, Torrean travertine is less porous and gives a more uniform surface texture.
METAMORPHIC – The metamorphics get their name from “meta” (change) and “morph” (form). Any rock can become a metamorphic rock. All that is required is for the rock to be moved into an environment in which the minerals which make up the rock become unstable. Extreme temperature and pressure are the catalysts in forming metamorphic rocks and produce stones with exceptional beauty, such as slate, marble and quartzite.
IGNEOUS – Igneous rocks are crystalline solids which form directly from the cooling of volcanic magma. This is an exothermic process (it loses heat) and involves a change from the liquid to the solid state. The earth is made of igneous rock – at least at the surface, where our planet is exposed to the coldness of space. Granite is an igneous rock and you can tell how near to the earth’s surface (or how deep within the earth) the granite was formed, based on its composition. Smaller particulates in the granite indicate it was formed closer to the surface. Larger particulates are the clue that it was formed deep beneath the earth’s crust. Given the process by which granite is formed, it is an extremely hard stone, second only to diamonds. It does well for countertops or flooring.
The inherent beauty of natural stone is what draws us to it. Every piece of granite is a unique work of art. The unpredictable range of colors in slate makes every installation a masterpiece. Marble transforms surfaces into statements of timeless beauty. I’d say Mother Earth wears a mantle of treasures, and it’s always a privilege for us to have a small piece of that treasure grace our homes.
“Each day slowly shapes our lives, as dripping water shapes the stone.” (Proverbs)
For more information on flooring visit the World Floor Covering Association’s Consumer Carpet & Flooring Guide.
Unwelcome guests may be entering your home and damaging your stone floors. Small stones, tiny pebbles, sand and stone-hard grit sneak into your home on the bottom of shoes. These little invaders are your floor’s No. 1 enemies because they can easily scratch and mar elegant-looking stone.