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In construction or renovation during extreme weather conditions, such as hot weather, freezing weather, salty coastal air or excessive rain, it is important to select a surface material that can resist the weather conditions. Quartzite is a natural metamorphic rock that has acquired fame due to its strong ability to withstand. Below, we will explain why quartzite can be relied upon in severe climates and why there are four reasons to use it.
Extreme Hardness and Abrasion Resistance
Quartzite has hardness 7-8 on Mohs hardness scale, and is harder than granite and far harder than marble or limestone. Such a high density is attributed to its geologic formation process: Sandstone that was subjected to high heat and pressure and melted the grains of quartz into a very tough surface.
Where there is wind and sand (deserts or coastal dunes) the sandy particles suspended in the air are sandpaper of low grade with the softer stones. The quartzite is resistant to such wearing, and retains its gloss, or cut surface decades. In the case of paths, exterior cladding, or kitchen tops that are subjected to daily scratches and pitting, the hardness of quartzite would allow very little harm to be caused to it even when it is not regularly sealed.
Low Water Absorption and Freeze-Thaw Resistance
One of the greatest threats that cold climatic conditions have on stone is freeze-thaw cycling. The water flows into the tiny holes and freezes, grows and fractures the material within. Quartzite has a low level of natural porosity- it is typically less than 0.5 percent of the volume as water. This can be compared to dense granite and even better than most of the limestones or sandstones.
Quartzite is almost impervious to ingress of moisture when appropriately sealed (a simple annual or bi-annual applying). As a result, it is not spalling, cracking or delaminating on its surface because of repeated freeze-thaw periods. Quartzite can provide structural integrity in the long term in outdoor patios, pool surrounds or entry steps in the north.
Heat Resistance and UV Stability
Surface materials in hot desert or tropical climates are subjected to a high amount of solar radiation and surface temperatures of over 70°C (160°F). The engineered stones made with resin binders may become yellow, distorted or emit smell over an extended period of time under the UV radiations and heat. Quartzite is 100% natural and mineral in nature and it does not have organic resins or polymers. It does not fade, discolor and deteriorate.
Also, quartzite will not scorch, crack or leave behind burn marks when in direct contact with hot cookware or fire pits or barbecue grills. It is highly heat resistant and is applied to an outdoor kitchen, fireplace surround or sun facing facade in a warm climate.
Chemical and Salt Resistance
The seaside environment is a challenge in itself: sea air, salt spray and even chemicals. Porous stones can be penetrated by salt crystallization causing flaking on the surface (so-called salt attack). Quartzite has a very thick structure, which helps to resist the intrusion of salt. It is also not sensitive to weak acids (e.g. lemon juice or vinegar) as compared to marble or limestone, however spills that occur regularly still require wiping.
Quartzite is not easily eroded in both polish and structure in the case of pool coping, beachfront walks or bathroom vanities which are near the sea. An additional coating of protection against chloride ions and staining agents is produced by a quality sealer.
Conclusion
Whether it is frosty winters, sweltering summers, salt sea winds or dust storms, no substance has the hardness, low porosity, heat-resistance, and chemical inertness of quartzite that is available in nature. Quartzite can be a lifetime investment in both looks and performance, particularly when obtained through a supplier whose quality control measures are strictly followed such as in selecting slabs, accurate cutting and professional packaging. We offer quartzite slabs in a variety of sizes. Come to us and talk of our regular density and smooth finish--perfect in your most trying weather.