Gravel is an affordable, durable and attractive material for driveways. Many homeowners enjoy their gravel driveways. If you would like to install one or need to add to your existing driveway, finding the right type of gravel can be confusing. Rogue Stone’s gravel experts are here to provide great tips.
Three Layers of Gravel for Driveways
There is not necessarily a best type of gravel for driveways. In fact, it is recommended that you use three different types when installing a gravel driveway. Each type serves a specific purpose, and they are layered on top of each other for maximum effectiveness.
The first layer will consist of the largest rocks. Each rock should be about the size of a baseball. This size is commonly referred to as #1. For driveway purposes, you will want to use angular gravel as opposed to round. Round gravel shifts more easily under the weight of vehicles as it does not bind together well. This larger layer serves a strong foundation and provides good drainage for your driveway.
Golf ball-sized rocks or #4 should be layered on top of the first layer. Angular gravel should be used in this layer as well. This layer helps to form a more solid base and transition to the top and smallest layer.
The final layer is made up of nickel-size rocks, or #57. Just as the other two, this layer should be angular. Make sure to choose a top layer that is specified as “dense†or “traffic-bound.†This indicates that the mixture contains rock dust that allows the gravel to bind more effectively.
More Tips for Gravel Driveways
Although gravel is the least expensive driveway option initially, it requires the most maintenance. You will have to rake the gravel and apply herbicide annually. Over time the gravel can shift off to the sides. You will need to rake it to push it back in place. Herbicide should be applied in order to prevent weeds or other brush from growing through the gravel. Every two to four years, you may have to add more gravel as it can diminish over time.
Before you install a gravel driveway, you will need to prepare the ground. First, you should remove the top soil as it is filled with organic matter and unsuitable as a foundation. The layer underneath, called hardpan, is more dense. It is also a good idea to apply herbicide or install landscaping fabric before you lay any gravel. This will prevent any growth from breaking through.
If you are laying the gravel yourself, make sure to that it is graded properly. Gravel driveways require a crown so that water can drain quickly. A crown simply means that the middle of the driveway is at a higher elevation than the sides.
If you need assistance with selecting the gravel that is right for your needs, contact Rogue Stone. We keep a large amount of gravel and other soils in stock for all kinds of projects.