The Best Rocks for a Driveway

Crushed Rock

• Crushed rock is also called road metal. Used since antiquity, first as weapons then as a roadway building material, crushed rock is a manufactured byproduct that begins by mining ore, which is then processed by crushing devices that render the ore and make jagged edges or chippings. Crushed rock is different from gravel, which is made by weathering and erosion processes. Limestone and dolemite are two of the largest supplies of crushed rock on Earth. This type of rock is popular due to its ability to shed water with proper yard drainage and because the rocks can be paved over easily in the future if needed.

Gravel

• Unlike manufactured crushed rock, gravel is made through weathering and erosion by natural elements, which produces a smooth edge. Like its crushed rock counterpart, gravel can be used in a driveway due to its ability to shed water with adequate yard drainage. You can also easily pave over gravel if you decide to construct a paved driveway. Gravel is less expensive than crushed rock or any other stone material.

Cobblestone

• Cobblestone, while expensive, is a strong and long-lasting option for a driveway. For centuries, it has been used to build streets and roads, far outlasting concrete or asphalt. Due to its high cost, most homeowners will opt to use cobblestone as an apron on asphalt because the use of the cobblestone still increases the overall property value of the home. Sandstone and limestone varieties of cobblestone are available; however, granite cobblestone is the most common.

Lava Rock

• Lava rock is unique in shape and texture, allowing for water drainage in the way it soaks up water like a sponge due to its porous nature. Lightweight and easy to install and manage, lava rock is abundant in Hawaii and is an eco-friendly alternative to concrete and asphalt. However, lava rock can be somewhat expensive compared to other hard-scaping options such as gravel or crushed stone.