Here’s what you should know about each layer of a good gravel driveway. Each one is essential to keep the stones anchored in place and provide a safe, stable foundation for your vehicles to drive on. There are actually three layers in gravel driveways: The base, middle, and top. Bank run fill gravel is a cost-effective fill material made of sand, dirt, and stone. Ideally, you’ll want to use machine crushed stones because their different shapes and rough edges allow them to mesh together better thus making a smooth and firm driveway. When you look at gravel drives, you only see the top layer. To avoid purchasing from multiple places, check first with your local gravel supplier to see if they have all these before buying.Īlso, avoid using round rocks. You can use crushed stone #411 however, any dense-grade or traffic bound gravel is also suitable. The top layer should be about one to one-and-a-half inches thick as well and should consist of marble-sized rocks. Due to its size, this layer helps fill in the gaps between the first and third layer thus, making the three layers more stable. For the second layer, add in one to two inches of #57 rocks. A one to two-inch layer of #3 stone will suffice. These work best as a foundation because of their smaller size. #3 Stones are ideal to use for the first layer. You do not want to use round gravel because it does not bind together. It approximately the size of a baseball four inches in diameter.
Thus, three different types should be used as well. Base layer using larger gravel: For this layer, you should use 1 angular gravel. It is recommended to use three layers of gravel for driveways.
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