Designing a Pool Edge with Fire Bowls

A row of fire bowls along the back of a pool is one of the few design moves that works as hard at ten at night as it does at noon. Getting it right is mostly composition: how many bowls, where the eye lands, how flame sits against water, and where heat and splash end up. We have not found a manufacturer spacing rule for pool bowls, so this guide lays out the design reasoning we use with clients, the few manufacturer limits that do apply, and a planner for sketching your own edge.

Start from the view, not the pool

Before you count bowls, decide where the pool is seen from most. For most homes that is a kitchen window, a family room slider or the main seating area on the patio. That viewpoint sets the axis of the whole composition. Bowls read best when they sit on the far side of the water from that spot, so the flames reflect across the surface toward you and the water becomes part of the picture.

Stand at the viewpoint in the evening and look at what is behind the far edge. A raised bond beam, a planter wall or a clean line of hedge makes a quiet backdrop. A neighbor's fence, a pool equipment pad or a busy roofline competes with the fire. If the backdrop is weak, taller bowls or bowls on pedestals can lift the flames above it, which we cover in Heights, Pedestals and Proportions for Pool Bowls.

Then look for the lines the pool already gives you: the center of the steps, a spa, a sun shelf, the midpoint of a raised wall, a door or window that lines up with the water. Bowls placed on or symmetrically around one of those lines look intended. Bowls placed at random along the coping look like they were added later, even when they were not.

How many bowls, and how far apart

None of the manufacturer documents we reviewed gives a figure for spacing between pool bowls. What you are really choosing is a rhythm, and a few patterns cover most pools.

• A pair works when there is a clear center to frame: a spa spillover, a sheet fall, a set of steps, a view out to the landscape. Place both bowls the same distance from that center and from the water.
• Three is the classic raised wall composition. A center bowl on the axis with one bowl each side gives the eye a beginning, middle and end.
• Four or more suits long lap pools and resort style edges. Keep the spacing even and let the row run the full length of the wall so it reads as a deliberate line rather than a cluster.

Even spacing matters more than the exact number. Measure the usable length of the wall or edge, subtract the space you need at each end, and divide what remains equally. As an example only: on a 24 foot raised wall, three bowls at 8 foot centers leave 4 feet at each end, which keeps the end bowls from crowding the corners. Your numbers will differ, and the planner linked below does this arithmetic for you.

Odd numbers are not mandatory, but they are easier to center. With an even count on a wall that has a strong center point, the middle of the composition lands on empty space, which can look like a missing bowl. If your pool has no center feature, an even row can be perfectly calm.

When you are ready to test a layout, open the Pool Bowl Planner. Use it to try a pair, three and four bowls on your own edge before anyone pours a footing.

Mixing fire bowls, water bowls and fire and water bowls

A pool edge does not have to be all fire. Three families of bowl are available, and mixing them is where much of the character comes from. Prism Hardscapes offers its Pool Collection (Verona, Moderno 2-P, Ibiza, Lombard-P, Sorrento, Toscano and Lombard-P Tall) as fire only, water only, or fire and water, so the same shape can repeat down a wall while its job changes.

• All fire and water bowls give the most complete look: flame in the center of each bowl and a spill of water into the pool. It is also the most involved build, because every bowl needs gas, water and often power.
• Fire bowls flanking a water bowl puts the sound in the middle and the light on the ends, a balanced arrangement for a three bowl wall.
• Water bowls flanking a fire feature works when the center is already a fire table or a fire pit on the deck behind the pool.

Keeping one shape and one finish across the whole row, and varying only fire or water, tends to look calmer than mixing shapes. If you want contrast, use it once and on the axis: a taller center bowl, for example, with lower bowls either side. For how the fire and water parts work inside a bowl, see Fire and Water Bowls: How They Work and How to Choose.

Heat, clearances and where people sit

Every gas fire bowl comes with clearance requirements in its manual, and those numbers, not a rule of thumb, set the space around each flame. They also differ by brand. Prism's installation guides (the Lombard Series guide, for one) call for 4 feet on the sides and 6 feet above. American Fyre Designs' fire bowl manual lists 3 feet at the sides and 6 feet above. Use the manual for the exact bowl you buy.

On a pool edge, the combustibles that tend to creep into that zone are the soft ones: chaise cushions, umbrellas, shade sails, palm fronds and tree limbs. Plan the lounge line and any umbrella sleeves outside the clearance of each fire bowl from the start. Look up as well as sideways, because a covered loggia or a pergola beam over a raised wall is easy to overlook on a flat drawing.

Think about foot traffic too. A bowl that sits on the coping where people walk between the pool and the deck will be bumped, splashed and stepped around. Raised walls, planters and dedicated pads keep bowls out of the walking path, which is safer and looks more composed.

Splash, sound and the deck

Water leaving a bowl has to land in the pool, not on the deck. That means each spout or spillway points at the water, with enough reach to clear the coping, and the bowl sits close enough to the edge for the fall to land cleanly. Some makers limit how far a bowl may overhang the edge, so check your bowl's installation instructions before the builder sets the final position.

Wind carries spray. On the prevailing wind side of a pool, a tall fall from a high bowl can wet the deck, the furniture and the next bowl along. Lower bowls and gentler flow reduce that. Your builder sets flow at each bowl with a valve, so you can tune the look and the sound after startup.

Sound is part of the design. A narrow spout into deep water gives a focused pour. A wide spillway gives a broad, softer sheet. Several bowls running at once add up, so if the wall is close to a bedroom window, plan to run fewer bowls or less flow at night. Sheet, Scupper or Spillway compares the effects in more detail.

Size and scale against the pool

Bowl size should answer to the wall and the distance it is seen from, not to the size of the pool alone. Prism's pool bowls run from 29 to 33 inches across, and Slick Rock's Cascade water bowls come in 22, 29 and 34 inch sizes. Seen from a patio across a wide pool, a 22 inch bowl can disappear; on a short spa wall right beside a seating area, a 34 inch bowl can dominate.

A quick way to judge scale is to cut cardboard circles at the diameters you are considering and set them on the wall, then look from your main viewpoint. It takes ten minutes and tends to settle debates faster than drawings do.

Finish is part of scale as well. A dark bowl against a light wall reads as a strong shape by day and nearly vanishes at night, leaving only the flame. A light bowl on a dark wall does the opposite. Choose based on which view matters more to you.

What to plan before you order

The design decisions above turn into utility runs, and it is far easier to set them during pool construction or a remodel than to trench a finished deck. At each bowl location your builder will want to know:

• Gas. Natural gas or propane, and the total load across all bowls. Fire by Design's pre-installation checklist asks for gas pipe sized for the distance to the furthest feature and the total load on the line, and for a key valve or gas ball valve within 6 feet of each feature.
• Water. A supply line to every bowl that spills. Prism specifies 15 GPM of water flow for its fire and water bowls, with a 3/4 inch NPT connection. Multiply by the number of bowls and your pool professional sizes the pump from there.
• Power. Electronic ignition needs power at the bowl and a way to switch it, such as a wall switch, timer or relay; your electrician confirms what your system requires.

Distance from the water also shapes which ignition you choose. Fire by Design requires three things for any of its features within 5 feet of a pool or spa: its 30 volt DC ignition, its 30 volt DC power supply certified for use near pools, and a gas line bonded at each feature. The power supply itself must not be installed within 10 feet of the pool. Prism states that its PH-Ignite system complies with NEC 2014 Article 680 and can be installed within 5 feet of pool water. Your electrician and inspector have the final word. Our pool fire feature planning checklist walks through who does what.

Bowls that work on a pool edge

These are a good place to start: Prism's pool bowls in fire and water form, a Prism pedestal bowl for a raised look, a Slick Rock water bowl to pair between fire, and a Fire by Design scupper bowl. The full range lives in our pool features collection.

If you are a pool builder or landscape architect laying out several bowls on a project, our Contractor Program can help with quotes and product guidance. Homeowners can call us at 888-887-1870, Monday to Saturday, 9 to 5 Eastern, or reach us through our contact page.

Common questions

How far apart should fire bowls be on a pool edge?

The manufacturer documents we reviewed give no spacing figure, so spacing is a design choice. Measure the usable length of the wall, leave comfortable room at each end, and divide the rest evenly. Even spacing and a clear center line matter more than any particular number. Each fire bowl still needs the side and overhead clearance in its own manual, so check that the bowls and any nearby furniture or umbrellas stay outside that zone.

Should pool fire and water bowls face the water?

Yes. The spout or spillway on a fire and water bowl points toward the pool so the water lands in it rather than on the deck. The bowl also has to sit close enough to the edge for the fall to clear the coping. Some makers limit how far a bowl may overhang the edge, so your builder should confirm the final position against the installation instructions for your bowl.

Can a gas fire bowl sit right at the edge of the pool?

It can, but distance from the water affects the ignition and electrical setup. Fire by Design, for example, requires its 30 volt DC ignition, a certified 30 volt DC power supply and a bonded gas line for any feature within 5 feet of a pool or spa. Prism states its PH-Ignite system can be installed within 5 feet of pool water. A licensed electrician and your local inspector confirm the final setup.

Do all the bowls on a pool wall need to match?

They do not have to, but a row usually looks calmer when the shape and finish repeat and only the function changes, with fire in some bowls and water in others. If you want contrast, use it once and on the center line, such as a taller center bowl between two lower ones. Mixing several shapes and colors along one wall tends to look unplanned from across the pool.

Sources

1. Prism Hardscapes, Fire and Water Bowls Instructions (Verona, Ibiza, Sorrento, Lombard-P, Toscano, Moderno 2-P), burner and water specifications, bowl sizes
2. Prism Hardscapes, Lombard Series Installation Guide v4, clearances
3. Prism Hardscapes, 2025 Product Guide, Pool Collection, pp. 22 to 23
4. Prism Hardscapes, PH-Ignite Installation Guide, REV 05312022, compliance and pool statements
5. American Fyre Designs (Robert H. Peterson Co.), Fire Bowl Installation and Owner's Manual L-H2-064, clearances
6. Slick Rock Concrete, Cascade Water Bowl, sizes
7. Fire by Design, Pre-Installation Checklist: Automated Fire Features, REV 090226, gas sizing, shutoff valve, features within 5 ft of a pool or spa
8. Fire by Design, PS Series Low Voltage LED Driver for Submersible Swimming Pool/Spa Lights and Automated Decorative Outdoor Fire Features, installation warnings