You want to landscape your garden or build a new driveway, but you don’t know which type of gravel to choose. That’s because not all stones and rocks are alike. And especially AB3 gravel, which is a type of material that is often used for construction projects.

When you are looking for work with AB3 rock, you have to properly identify it and how it will be used. This guide will help you understand everything about AB3 materials so that you can make an informed decision about your building process.

What is AB3?

Crushed limestone aggregate AB3 is composed of rocks up to 1.5 inches in size and no smaller than lime dust. This product is popular for driveways, parking lots, and walkways because it packs well and provide good drainage. It can also be used as a base for pavers or flagstones.

AB3 is available in both a dark grey and light grey version. The dark version has a more pronounced fossil content while the light version is lighter in color and contains fewer fossils. Although AB3 is relatively easy to install, it is important to compact the base properly before installing flagstones or pavers to ensure a long-lasting installation.

How Much AB3 Rock Do I Need?

Estimating the amount of rock you need for a project can be tricky. Fortunately, there is a simple formula that can help you to calculate the approximate quantity you will need. First, measure the length, width, and depth of the area you plan to fill in feet.

Then, multiply those numbers together to find the total square footage. Finally, divide that number by 21.6, which is the number of cubic feet in a ton. This will give you the estimated number of tons of rock required to complete your project. With this information in hand, you can be confident that you have enough rock to get the job done right.

How to Apply AB3 Gravel for Landscaping?

The AB3 rock layer should be at least 4 to 6 inches thick. This layer is important because it helps to protect the underlying soil from erosion. The thickness of the rock layer will vary depending on the type of soil and the amount of rainfall in the area.

In areas with high rainfall, the AB3 stone should be 8 inches thick. In addition, the AB3 gravel layer should be thicker in areas with heavier clay soils. This is because clay soils are more prone to eroding than sandy soils.

By increasing the depth of your AB3 rock bed, you can help to prevent soil erosion and protect your landscaping investment.

How Do You Level AB3 Gravel Base?

Once the base has settled, use a laser level or string level to check for any high or low spots. To fill in low spots, use a shovel to add more gravel to the area and then use a tamper for compacting the rock. For high areas, remove some of the stones until the area is level.

You can also use wood lumber to screed the surface. This will help to ensure that the base is level and even. After the AB3 gravel base has been properly compacted, you can then install paving stones or flagstones.

Do You Need To Wash the AB3 Gravel before Laying It?

Yes. Before you can lay gravel, you have to make sure that it is clean and free of debris. While it is possible to purchase pre-washed gravel, it is also a simple matter to wash it yourself. The best way to do this is to:

First, remove any large pieces of dirt or debris. Second, add the AB3 rock to a wheelbarrow or other container. Third, slowly add water to the stones, stirring them as you go. Fourth, once the water is just covering the gravel, use a garden hose to rinse away any remaining dirt. Fifth, allow the AB3 rocks to drain thoroughly before using them in your landscaping project.


As you can see, AB3 gravel is a versatile landscaping material that can be used for a variety of projects. Whether you are looking to add drainage to your property or create a walking path, AB3 rock is an excellent choice.

When properly installed, this gravel can last for a long with minimal maintenance. So, if your goal is to find a durable and sturdy landscaping solution, AB3 gravel is definitely worth considering. Thanks for reading.

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