Pool Deck Gravel: Material Guide

Pea Gravel is the stone we suggest first for the open ground around a pool. The pebbles are about 3/8 inch and rounded, with no sharp edges to catch a bare heel. Its mixed tan and brown color looks warm next to blue water and does not glare the way bright white stone can at midday.^[1]

Decomposed Granite suits the paths and lounge pads that lead to the water. Its fine grit packs into a smooth, flat tread when it is wetted and tamped, so chair legs stay level and a wet foot does not sink. Keep it a step or two back from the coping, since loose grit tracked into the pool clouds the water and wears the filter.^[1]

Walkway Gravel is a crushed stone of about the same size as pea pebbles. Its broken faces lock together and make a firmer surface for a busy route from the house to the pool gate. Those same sharp faces are less pleasant under bare feet, so many yards use it on the approach and keep pea pebbles near the water.^[1]

River Rock belongs in the planting strips and drainage bands around the deck, not under feet. Larger, smooth stones frame the pool, catch splash water and hide the pipes and pump housing. Children love to toss them, so keep them well back from the edge of the water.^[1]

Comfort under bare feet comes first. A round stone near 3/8 inch spreads weight across many smooth points, so walking on it feels like a coarse beach. Crushed stone of the same size feels sharper, and large rock is no surface for walking at all.^[1]

The area has to drain at once. Pool water, rain and runoff from wet bodies all land on the ground around the pool. Clean pebbles with open spaces between them let that water sink straight down, so puddles do not form and algae has no film of water to grow in.^[1]

The surface should stay bearable in strong sun. A light, mixed tan and brown stone reflects much of the heat that dark pavers and black rock soak up. Gravel also has air between the stones, so the top warms but does not hold heat the way a solid slab does.^[1]

The stone has to stay where it is put. Pea Gravel weighs about 2,600 lb per cubic yard, heavy enough that a splash from a cannonball or a gust of wind does not throw it around. Light materials such as bark and rubber chips float, and every storm washes some of them into the water.^[1]

It must be kind to the pool itself. Fine dust and small sand grains can blow or wash into the water and work their way into the filter. A washed 3/8 inch pebble carries little dust, and any piece that falls in sinks to the floor where the vacuum picks it up.^[1]

Mark the area and dig out sod and topsoil to firm ground. Grade the bottom so it falls away from the pool, never toward it. Water that runs back to the coping can undermine the pool shell and carries dirt into the water.^[1]

Set a solid border along every edge. A row of pavers, a concrete curb or a steel edge staked into the ground holds the stone in place. Along the pool side, a hard strip of pavers or concrete between the coping and the gravel is the best defense against stone landing in the water.^[1]

Lay landscape fabric over the dug area to keep the soil below from mixing into the stone. On soft or clay ground, put down a thin layer of compacted crushed base under the fabric so chair legs and foot traffic do not push ruts into the surface.^[1]

Spread the Pea Gravel with a rake and walk it in. Hose it down well before the first swim to wash away dust, and run the pool filter afterward if any fines drift in. The washing also brings out the full tan and brown color.^[1]

A 2 inch layer of Pea Gravel feels firm underfoot and is enough over a well compacted base. It takes about 0.80 tons for every 100 square feet. Thin layers stay steadier for chairs and tables.^[1]

A 3 inch layer gives a softer, beach-like feel and hides fabric better. At that depth, 100 square feet takes about 1.20 tons. Lounge chair legs sink a little more, so a few flat stepping stones under the chairs help.^[1]

Thicker layers make walking harder. At 4 inches, 100 square feet takes about 1.60 tons, and feet start to sink with each step. A 6 inch fill, about 2.41 tons per 100 square feet, belongs only in a drainage trench beside the deck, not on the walking surface.^[1]

Measure the area around the pool as a large rectangle and subtract the pool itself, along with any paved strips and planting beds. Divide what remains by 100 and multiply by the tons for your depth. Pea Gravel is sold by the ton, so round the result up to keep a small pile on hand for raking into worn spots.^[1]

Pea Gravel is sold by the ton and comes by dump truck. The delivered total depends on how many tons the area takes, the distance from the yard that supplies it and how close the truck can get to the backyard.^[1]

Access matters more for a pool than for most jobs. Fences, gates and the pool itself keep a truck in the driveway, so the stone has to be moved by wheelbarrow. Budget time for that, or plan a drop spot near the side gate.^[1]

Base work and depth shape the order. A good compacted base lets a 2 inch layer do the job, while a soft, poorly prepared bed needs deeper stone to feel firm and still moves around.^[1]

Gravel asks for little after it goes in. There are no joints to reseal, no cracks to patch and no slab to replace. A rake keeps it level, and a light top up after a few summers covers what is lost to shoes and the pool vacuum.^[1]

Type your ZIP into the box on the site to see the delivered figure, then enter the area in the calculator to see the tonnage.^[1]

Running loose stone right up to the coping. Swimmers carry pebbles in on their feet and splashes knock stones over the edge. A strip of pavers or concrete between the water and the gravel stops most of this.^[1]

Grading toward the pool. Water that drains to the edge carries dirt and stone into the water and can wash out soil under the deck. The ground should fall away from the pool on every side.^[1]

Laying unwashed stone. Dust from crushed or unwashed rock clouds the water and clogs the filter. Rinse the stone well after spreading and before anyone swims.^[1]

Choosing sharp stone where people walk barefoot. Angular gravel is fine on a path to the gate but hurts on the walk from the lounger to the ladder. Use round pebbles in the barefoot zone.^[1]

Picking a dark stone for a sunny deck. Black and deep gray rock heat up fast and become hard to stand on in midsummer. A lighter, mixed color stays more comfortable.^[1]