Granite is a common type of felsic intrusive igneous rock. Granites can be predominantly white, pink, or gray in color, depending on their mineralogy.
Granite has poor primary permeability overall, but strong secondary permeability through cracks and fractures if they are present.
Granite is used in buildings, bridges, paving, monuments, and many other exterior projects. Indoors, polished granite slabs and tiles are used in countertops, tile floors, stair treads and many other design elements.
One of the most familiar uses of granite is in kitchen countertops. The countertop was made from a solid slab of granite that was cut to custom shape and edge-finished. Increased demand for granite countertops has inspired a large number of kitchen contractors to acquire the expertise and equipment to install them. As a result they can usually be ordered from and installed by a local dealer instead of a company located hundreds of miles away. For this product, increased demand has actually reduced the installed price to a level that is within reach of the average homeowner.