Crushed Stone vs Pea Gravel
Crushed stone is angular and locks together when compacted, making it the right choice for anywhere structural stability matters — driveway bases, under patios, backfill against walls. Pea gravel is small and rounded, which makes it comfortable underfoot and attractive for walkways and decorative beds, but it shifts and doesn't compact, so it's the wrong choice anywhere load-bearing or drainage performance matters.
A common mistake is using pea gravel for a driveway surface expecting it to behave like crushed stone — it will migrate, rut, and require constant refilling.
Get a direct quote from Natural Stone Source Ontario — we can help confirm which material actually fits your project.
Choosing Between Crushed Stone and Pea Gravel
The difference is shape, and shape decides behaviour. Crushed stone is angular, produced by crushing larger rock, so the faces lock against each other and the material compacts into a stable mass. Pea gravel is rounded, naturally worn river stone, so it never locks. It rolls and redistributes under load.
That makes the choice straightforward. Anything structural, load bearing or compacted uses crushed stone: driveway bases, slab bases, paver bases, wall backfill. Pea gravel suits decorative and free-draining applications where nothing is being supported, such as garden paths, ground cover, drainage layers, and areas around downspouts.
Frequently Asked Questions
What is the difference between crushed stone and pea gravel?
Crushed stone is angular and locks together when compacted, so it carries load. Pea gravel is rounded and does not lock, so it stays loose and shifts underfoot. The shape of the particle, not its size, drives the difference.
Can pea gravel be used under pavers or a driveway?
No. It will not compact into a stable base and will shift under load, causing settlement and rutting. Use an angular crushed material for any base beneath pavers, slabs or driveways.
Which is better for drainage?
Both drain well if washed and free of fines, and pea gravel is often chosen for decorative drainage areas. For structural drainage behind walls or in French drains, washed angular stone is generally preferred because it stays in place rather than migrating.
Is pea gravel good for a walkway?
It works for informal garden paths but stays loose underfoot, which makes it difficult for wheels, strollers and mobility aids. Edge restraint and a compacted base underneath both help considerably. For a firm walking surface, a compacted crushed material or a paved surface is better.