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Fire Pits

What to Put Around a Fire Pit: Surfacing and Seating

Gravel, pavers and decomposed granite all work; mulch and artificial grass do not. Plan a 7-foot clear radius before choosing the material.

By Zakaria 3 min read Save to Pinterest — opens Pinterest in a new tab
Stone tables and benches set out on a raked gravel surface beside a dry stone wall
Photo: markus53, Pixabay Content License, via Pixabay
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Decide the radius first, then the material. Around 7 feet of clear non-combustible surface from the edge of the pit is the figure to design to — and it is also, conveniently, the distance that makes seating comfortable.

The materials

This table answers the question on its own
MaterialUnderfootCostNotes
Crushed stone (angular)Stable — locks togetherLowBest loose fill. Chairs sit level
Pea gravelShifts and rollsLowComfortable to look at, awkward to walk on
Decomposed graniteFirm when compactedLow–midTidy finish; needs edging and occasional topping
Pavers / brickExcellentMid–highEasy to sweep; may stain from ash and fat
ConcreteExcellentMidCan spall if heated unevenly when damp
Bark or rubber mulch——Never. Both ignite; rubber burns underground
Artificial turf——Never. Melts from radiant heat alone

Angular, not rounded

Rounded pea gravel rolls underfoot and will not hold a chair leg level. Angular crushed stone knits together and stays where it is put. It is the same material, a different crush.

Laying a gravel surround

  1. Mark the radius — roughly 7 ft from the pit edge, adjusted to the space you have.
  2. Strip the turf and level, with a slight fall away from the pit for drainage.
  3. Weed membrane across the whole area.
  4. Edging: steel, a soldier course of pavers, or low stone. Not timber — it sits inside the zone you want non-combustible.
  5. 2–3 inches of angular crushed stone, raked level and compacted.
  6. Top up every couple of seasons as it settles and migrates.

Seating distances

  • About 3 feet from the pit edge to the front of a chair — close enough for warmth, far enough to be comfortable when the fire is at full height
  • Another 2–3 feet behind the chairs so people can walk round without stepping over anyone
  • Leave one side more open if the pit sits where a prevailing breeze pushes smoke consistently

Mulch is the failure that catches people out

An ember landing in bark chip can smoulder for a long time before it flares, often after everyone has gone inside. Rubber mulch is worse again: it ignites easily, burns hot, and keeps burning below the surface where water does not reach.

Planting near a fire pit

Keep planting outside the surfaced radius, and prefer green, low and well-watered over dry and resinous.

Ornamental grasses, conifers and anything that holds dead material through the season are the worst offenders — effectively kindling standing upright. Containers are useful here, because you can move them out of the way on the evenings you light the pit.

Common questions

What should you put around a fire pit?

A non-combustible surface extending well past where embers land. Pea gravel, crushed stone, decomposed granite, pavers, brick and concrete all work. The usual recommendation is a clear radius of around 7 feet from the edge of the pit, which also happens to be the spacing that makes seating comfortable. What matters more than the material is that nothing flammable sits inside that radius — mulch, dry grass, artificial turf and timber edging are the common failures.

Is gravel a good surface around a fire pit?

It is the most popular choice and for good reasons: non-combustible, free-draining, cheap, and it handles the heat without staining or cracking. Angular crushed stone is better than rounded pea gravel underfoot because it locks together instead of shifting, and chairs sit more stably on it. Lay it over a weed membrane at a depth of 2 to 3 inches, with an edge to stop it migrating into the lawn.

How much space do you need around a fire pit?

Around 7 feet of clear, non-combustible surface from the edge of the pit is the figure most guidance converges on, and it serves two purposes at once. It keeps embers landing on something that cannot catch, and it puts seating at a distance where the fire is pleasant rather than uncomfortable. For seating specifically, allow about 3 feet between the pit edge and the front of a chair, plus room to walk behind.

Can you put mulch around a fire pit?

No. Bark and wood chip mulch is dry, loose and highly combustible, and a single ember landing in it can smoulder unnoticed for a long time before it flares. Rubber mulch is worse — it ignites readily, burns hot and keeps burning below the surface where water struggles to reach. Keep both well outside the clear radius and use gravel or stone instead.

Do you need a border around a fire pit area?

Not for safety, but it makes a loose-fill surface work properly. Gravel and decomposed granite migrate into surrounding grass and beds without an edge, which looks untidy within a season and means topping up. Steel edging, a soldier course of pavers or a low stone kerb all hold the material in place. Choose metal or stone rather than timber edging, since timber sits inside the zone you want non-combustible.

What plants can you put near a fire pit?

Keep anything planted outside the clear radius, and favour green, well-watered and low over dry and resinous. Ornamental grasses, conifers and anything that carries dead material through the season are poor choices close to a fire — they are effectively kindling standing up. Low, lush perennials beyond the surfaced area are fine, and containers have the advantage that you can move them when the pit is lit.

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