How does the color of granite change over time outdoors?

Granite is a durable and popular natural stone used in outdoor applications, but its color can change over time due to various environmental factors. When exposed to the elements, granite undergoes a natural aging process influenced by weathering, UV radiation, and pollution.

Sunlight, particularly UV rays, can cause the minerals in granite to fade slightly, leading to a gradual lightening of its color. Rain, snow, and humidity can also contribute to this process by washing away surface particles and exposing the stone to further weathering. Over time, the once-vibrant hues of granite may become more muted.

Additionally, environmental pollutants, such as acid rain or airborne chemicals, can react with the minerals in granite, altering its appearance. In some cases, this can result in discoloration or the formation of a patina, which gives the stone a weathered, antique look.

To slow down these changes, regular maintenance is essential. Sealing granite surfaces can help protect them from moisture and UV damage, preserving their original color for longer. Cleaning with pH-neutral products and avoiding harsh chemicals can also prevent premature aging.

While the color of granite may evolve over time outdoors, many appreciate the unique character and charm that natural weathering brings to this timeless material.