Quebec, Brazil & India
ASTM C615 CompliantGranite is a coarse-grained igneous rock that solidified slowly from magma deep underground over millions of years. This slow cooling allows large mineral crystals to form — the distinctive "salt-and-pepper" pattern of interlocking quartz, feldspar, and mica. No two granite slabs are identical, but the pattern variatio...
Rated Outstanding for freeze-thaw in all North American climate zones. One of the most freeze-resistant building stones available. Used for curbing, paving, and exterior facades in all USDA zones without restriction.
Seal once per year with penetrating impregnator for kitchen use. Do the water test: if water absorbs in under 4 minutes, seal immediately. Clean with pH-neutral stone cleaner. Granite is heat-resistant and acid-resistant — the most maintenance-friendly stone. Do not use abrasive cleaners. Repair chips with color-matched two-part epoxy.
Most granites need annual sealing for kitchen use, but some very dense granites (Black Absolute, Impala Blue) are nearly impervious and may only need sealing every 3–5 years. Test with water: pour a small amount on the counter and wait 10–15 minutes. If the surface darkens and absorbs the water, seal immediately. If it beads, you're fine for another year.
Granite is one of the best stones for outdoor use. Its extremely low water absorption (0.05%), outstanding freeze-thaw resistance, and hardness (Mohs 6–7) make it ideal for exterior paving, pool surrounds, outdoor kitchens, exterior stairs, and curbing. Flamed or bush-hammered finish provides non-slip surface for pool decks and pathways.
Granite contains trace amounts of naturally occurring uranium, which can produce trace radon gas. The EPA and CPSC have studied granite countertops and found that in a typical kitchen, granite contributes a negligible increase in indoor radon (much less than soil/foundation sources). The American Cancer Society and EPA do not recommend removing granite countertops due to radon concerns. However, ensure good kitchen ventilation, which addresses all indoor air quality issues simultaneously.
Granite is a coarse-grained igneous rock that solidified slowly from magma deep underground over millions of years. This slow cooling allows large mineral crystals to form — the distinctive "salt-and-pepper" pattern of interlocking quartz, feldspar, and mica. No two granite slabs are identical, but the pattern variation is less dramatic than marble. Major quarrying regions: Quebec (black and grey granites), Brazil (exotic colors — Blue Bahia, Giallo Ornamental), India (black absolute, Kashmir White), and South Africa. Domestic US granite comes from Texas (Sunset Red), Georgia (gray), and New Hampshire (Concord gray).