What to Look for in Gravel for Steep Driveways

Why Gravel Choice Matters for Steep Driveways

When it comes to a steep driveway, choosing the right gravel is essential in preventing erosion, ensuring strong traction, and minimizing washouts from severe weather. In this article, we will explain why angular crushed stone is an ideal choice due to its interlocking abilities. As well as where you can find that very stone on LandscapeBarn.com.

Key Characteristics of gravel that works well for steep slopes

Below are some characteristics of this gravel that is ideal for steep slopes: 

1. Angular Shape: Angular gravel pieces are able to knit/lock together. This increases friction and prevents the stones from shifting.
2. High Density: Heavy, dense stones are less susceptible to displacement, especially when there is rain. 
3. Drainage/Permeability: Effective slope gravel allows water to pass through rather than holding it on the surface. 

Best Gravel for Steep Driveways

Crushed Stones with Angular Edges

Angular, crushed stone has jagged edges that lock together. This type of stone is 

a strong choice for steep driveways because it increases friction and limits 

shifting during rain. 

Dense graded Gravel Blends

Dense graded gravel is ideal for steep driveways because its composition creates a solid, tight, and stable base.

December 10, 2025

How to Prevent Stone & Gravel From Washing Away

Rainy weather can be a serious problem for your stone and gravel surfaces if you don’t prepare for it. This shifting often occurs over time. Read on to learn more.

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Types of Gravel to Avoid on Steep Slopes

Avoid using smooth, rounded, or small-sized stones on steep slopes. Stone with these characteristics lack fraction and do not interlock, making them unstable surfaces that are susceptible to shifting. 

How Does Base Preparation Affect Gravel Performance on Hills? 

Proper base preparation is essential for ensuring strong gravel performance on hills. A strong base ensures stability and prevents shifting. A weak base can lead to stone migration, ruts, and gravel washing away during heave precipitation. 

Proper Gravel Depth and Compaction for Steep Driveways

For steep driveways, a stable foundation should have a 6-12” depth of crushed, angular stone. It is recommended to excavate 8-12” then in 4” lifts using a plate compactor. 

Drainage Considerations for Sloped Driveways

With sloped gravel driveways, drainage is a key factor to consider. Elements like diversion trenches or ditches alongside the driveway will help divert surface water while also managing flow to prevent erosion. 

Edging and Retention Solutions for Steep Grades

Effective edging and retention will not only help protect the steep grade but also the surrounding landscapes. Solutions like building retaining walls or creating rock gardens can both protect the gravel and the surrounding soil of the area. 

How Much Gravel You Need for a Steep Driveway: 

Calculation Steps for a Steep Driveway:

• Calculate Cubic Yards: Length(ft) × Width(ft) × Depth ÷ 27 = Cubic Yards.
• Convert Cubic Yards to Tons: Multiply cubic yards by 1.4 to estimate the weight in tons.
• Account for Slopes: Increase your final order by 15-20% to account for steep slopes. 

Choosing the Right Gravel for Your Driveway at Landscape Barn

At Landscape Barn, we are here to help you choose the right gravel to support your driveway as well as enhance the overall look of your home. Our team of experts will help you find practical, high-quality stone that meets your driveway needs and set you up for a smooth installation.