Why Gravel Is Needed Under a Concrete Slab

When preparing for a new driveway, patio, or walkway, one critical step is often overlooked: placing gravel under concrete. While it might seem like an extra step, this base layer plays a vital role in the strength, stability, and longevity of your concrete slab. Skipping it can lead to problems such as cracking, settling, and moisture damage in the future.

Why Do You Need Gravel Under Concrete?

Gravel provides a stable, supportive foundation for your concrete slab. It ensures even weight distribution and prevents the slab from shifting or sinking over time. Without gravel under the concrete, the slab may rest directly on soil, which can shift, retain moisture, or freeze and expand, resulting in uneven surfaces and cracks.

Key Benefits of Placing Gravel Under Concrete

Here’s why a compacted gravel base is essential for quality concrete work:

• Improves drainage by allowing water to flow away from the slab
• Reduces settling by providing a firm, stable base
• Prevents moisture buildup that can weaken the concrete
• Enhances longevity by protecting against erosion and ground movement
• Improves load-bearing capacity for high-traffic areas like driveways

A properly compacted gravel base sets the stage for a long-lasting concrete surface that resists wear and weather.

Professional Preparation for Every Project

At Concrete Driveway Co., we understand that the success of any concrete slab begins beneath the surface. That’s why our team takes time to properly prepare each site, ensuring the correct depth and compaction of gravel under concrete for optimal performance.

Get Started with a Solid Foundation

Planning a new driveway or patio? Trust Concrete Driveway Co. to handle your project from the ground up. Contact us today for a free estimate and learn more about our expert concrete installation process. We are based in Greenville, SC, but proudly serve homeowners across multiple states.