As a gardening and landscaping expert, I can provide you with some guidance on whether you need a subbase for a gravel path. The short answer is yes, a subbase is important for the longevity and stability of your gravel path.
A subbase is a layer of material that is placed beneath the main surface of a pathway or driveway. Its purpose is to provide a stable foundation and distribute the load evenly, preventing the surface from sinking or becoming uneven over time. In the case of a gravel path, the subbase helps to create a solid base for the gravel to sit on, reducing the risk of it shifting or sinking into the ground.
To create a subbase for a gravel path, you will need to dig down to a depth of around 125mm (5 inches). This depth allows for a minimum of 75mm of subbase material and 30-40mm of finished gravel surface.
The subbase material can vary, but it is typically made up of a mixture of crushed stone, gravel, or hardcore. This material is compacted and leveled to create a firm and stable base for the gravel. It is important to ensure that the subbase is properly compacted to avoid any future settling or sinking of the pathway.
In my personal experience, I have seen the importance of a subbase in gravel paths. Without a proper subbase, the gravel can become uneven, easily displaced, and prone to sinking in areas of high foot traffic or vehicle use. This not only affects the aesthetics and functionality of the path but can also lead to maintenance issues and the need for frequent re-graveling.
A subbase is essential for a gravel path to provide stability, prevent sinking, and ensure the longevity of the pathway. By digging to a depth of 125mm and properly compacting a subbase material, you can create a solid foundation for your gravel path.
