Use a fire pit only outdoors, at least 10 feet from anything that burns, on a level non-combustible surface, with kids and pets 3 feet back and an adult watching until the fire is dead out.
Most fire pit injuries come from a pit too close to siding, set on a wood deck, or left smoldering — not the flames. Here are the rules the NFPA and Consumer Reports push, plus the CPSC warning worth reading before you buy.
Where A Fire Pit Actually Belongs
Place it outdoors on level, non-combustible ground — patio blocks, brick, or concrete — at least 10 feet from anything combustible: siding, fences, deck railings, low branches, tents, dry grass, eaves, rooflines. Wood decks are the classic mistake; unless the manufacturer rates the pit for a combustible surface, it doesn’t belong there. Same under overhangs, trees, or power lines. Skip windy days — sparks travel farther than expected.
Picture two rings: the outer ring is the 10-foot clearance, the inner ring is 3 feet — the child-and-pet exclusion zone, kept empty while the fire is lit.
Fuel, Size, And Spark Control
Burn only clean, dry, seasoned hardwood; keep the fire modest — roughly 3 feet across and 2 feet high is the ceiling. Don’t burn trash, treated lumber, plywood, pallets, rubber, plastic, yard waste, or wet/green wood — treated wood and plastics release toxic smoke, and damp wood pops embers.
No accelerants: no gasoline, no lighter fluid. Tabletop liquid-fuel pits carry the same hazard; follow the label’s fuel instructions if you own one. A spark screen keeps embers and ash inside the pit — one of the cheapest safety upgrades available.
| Safety Rule | The Number | Why It Matters |
|---|---|---|
| Clearance from anything combustible | 10 feet | Stops siding, fences, and branches from catching stray embers |
| Child and pet exclusion zone | 3 feet | Keeps kids and animals out of burn and knock-over range |
| Maximum fire size | 3 ft wide, 2 ft high | Smaller fires throw fewer embers and stay controllable |
| Supervision | Constant | Fires can spread in under a minute when nobody’s watching |
| Extinguishing gear on hand | Charged hose, shovel, or extinguisher | Lets you kill the fire fast if wind or sparks shift |
| Wind cutoff | Any windy day | Sparks travel farther and conditions change fast |
| Ash disposal | Metal container, tight lid | Cooled ashes can still reignite in a plastic bin |
If you haven’t picked a pit yet, match the model to your yard — our tested roundup of the best at-home fire pit options covers size, fuel type, and spark-screen setups.
Supervision And Putting It Out
An adult stays with the fire the whole time it burns — no quick trips inside. A charged hose, bucket of water, shovel, or extinguisher sits within arm’s reach before the first match is struck. Consumer Reports puts it plainly: never leave a fire unattended, and keep an adult present until it’s fully out. The NFPA backs the same idea — the fire is only “done” when it’s cold.
To extinguish: spread the coals, douse with water, stir, and douse again until nothing hisses. Scoop cooled ashes into a metal container with a tight lid, away from anything combustible. Don’t dump warm ashes in a trash can — that’s how porch fires start hours later.
Local rules often run stricter than national guidance — bigger clearance distances, tighter size limits, or burn bans during dry stretches. A two-minute call or a look at the fire marshal’s page settles it.
FAQs
Can I use a fire pit on a wood deck?
Only if the manufacturer specifically rates the unit for combustible surfaces. Most aren’t, and Consumer Reports advises against it without that approval. If in doubt, move to concrete, brick, or patio blocks — the 10-foot clearance from railings and siding still applies.
How far should a fire pit be from my house?
At least 10 feet from anything combustible, including siding, fences, and overhanging branches. The NFPA recommends keeping outdoor fires well clear of structures, and local codes may require more. Measure from the pit’s edge to the nearest flammable surface, not the center.
Are alcohol or liquid-burning fire pits safe?
Tabletop liquid-fuel models carry similar warnings. Stick with wood, propane, or a listed gel unit following its instructions.
References & Sources
- National Fire Protection Association. “Wildfire Prevention Tips for Fire Pits and Outdoor Fires” Clearance, fire size, fuel, and extinguishing guidance.
- U.S. Consumer Product Safety Commission. “Consumer Alert: Stop Using Alcohol or Other Liquid-Burning Fire Pits” 2026 warning on flame-jetting hazards and burn injuries.
- Consumer Reports. “Fire Pit Safety Advice” Supervision and placement rules for home use.