What Is a Gunite Pool, and Why It Is the DFW Standard for Custom Builds
Gunite is a mixture of sand, cement, and water shot through a hose at high pressure onto a steel frame, where it’s hand-troweled into the exact shape of the pool. It’s the reason a pool built in Frisco can have a sun shelf on one end and a nine-foot diving well on the other, all in one continuous concrete shell. Every pool I put in the ground is gunite, formed on-site to fit the yard in front of me rather than assembled from a pre-molded shape or a factory template. The shape, depth, and every ledge or shelf in it are decided by the lot, not by what a supplier happens to stock.
That matters more here than in most parts of the country. North Texas sits on expansive clay soil that swells and contracts with moisture, and a pool that isn’t engineered for that movement will crack over time. Gunite, reinforced properly and given time to cure, handles that soil movement the way a rigid, pre-formed shell cannot. It flexes and distributes load across a steel frame designed for the exact conditions on that lot, rather than relying on a one-size-fits-all shape to survive whatever ground it’s dropped into. If you want the full rundown on why the shell itself matters as much as the finish on top, I cover it in my custom in-ground pool builds page.
What follows is the actual sequence, step by step, the way it plays out on a real job site, not a marketing version of it.
Step 1: Design, Engineering, and Permitting
Before anyone touches dirt, I sit down with the homeowner and walk the yard. I’m looking at drainage, existing trees, setback lines, and how the pool will sit relative to the house. From there, the design gets translated into engineered drawings that account for soil conditions, slope, and structural loads specific to that lot. This isn’t a template pulled off a shelf. My structural pool engineering is done for the property in front of me, and it’s what gets submitted to the city for permitting.
Permitting timelines vary by municipality. Some cities turn plans around in a week, others take three or four. I build that into the schedule up front rather than let it surprise the homeowner later. This is also the stage where I talk through depth and shape decisions that shape everything downstream, from how the steel gets tied to where the equipment pad ends up. I’ve written more on that in my project planning process page and in my notes on planning your pool’s depth and shape.
Step 2: Excavation and Site Preparation
Once permits are in hand, an excavator digs the pool to the exact shape and depth of the engineered plan. This step usually takes one to two days depending on soil conditions and access to the yard. Anyone who has watched this part happen knows how fast it moves and how much dirt comes out of a hole that size.
I check the excavation against the plans before anything else happens. Depth, slope, and bond beam elevation all get verified here, because a mistake caught now costs an hour. A mistake caught after steel and plumbing are in costs days. Soil is also inspected at this stage for anything the original survey might have missed, roots, old fill dirt, or unexpected rock, since North Texas lots can hide any of the three.
Step 3: Structural Steel Reinforcement
The steel that goes into the pool shell isn’t ordered from a catalog. It’s designed, engineered, and fabricated in-house, not subcontracted out to whoever is available that week. Rebar gets tied into a grid across the entire pool floor and walls, spaced and sized according to the engineering plan from Step 1, and it’s this grid that gives gunite its strength once it’s sprayed.
Where this matters most is on the features that go beyond a basic rectangle. A cantilevered sun shelf, for example, needs steel that carries load without a support post breaking the clean line underneath it, which means the frame has to be built for that specific shelf’s dimensions rather than adapted from a standard mold. Steel-framed raised walls and load-bearing pavilion structures carry their own weight and wind load, and on DFW’s expansive clay soils, that steel also has to account for a foundation that shifts seasonally in ways a slab foundation on stable ground never does. Lot constraints, narrow side yards, sloped grades, tree root zones, often dictate exactly where a raised wall or shelf can be tied in. I go into more depth on how that engineering gets handled in my structural steel in custom pool design page, and in my broader architectural steel work built for North Texas lots.
Step 4: Plumbing, Electrical, and Equipment Rough-In
With steel in place, plumbing lines get run for skimmers, returns, main drains, and any water features. Electrical conduit goes in at the same time for lighting and equipment. This is the step homeowners rarely see photos of, but it’s one of the most consequential, because every line has to be sized and routed correctly before gunite locks it all in place.
This is also when I finalize the equipment pad layout, filtration, heating, and the automation panel that will eventually run the whole system from a phone. I plan for pool automation systems at this stage rather than bolting them on later, since retrofitting conduit after the shell is poured means cutting concrete. The filtration system guide I put together walks through how I size filtration to the pool’s volume and bather load, which gets decided here too.
Step 5: Applying the Gunite Shell
Gunite day is the fastest, most visible part of the build. A crew sprays the concrete mixture directly onto the steel frame, and a nozzleman hand-finishes the walls and floor to the exact plan while it’s still workable. The whole shell usually goes up in a single day.
Watching it happen, the pool goes from a hole with steel in it to something that actually looks like a pool by the end of the afternoon. But that speed is deceptive. What’s underneath the surface, the steel spacing, the wall thickness, the bond beam, took weeks of engineering to get right, and none of it is visible once the gunite goes on. This is where a rushed or under-engineered build shows its weaknesses years down the road, usually in the form of cracking.
Step 6: Curing Time and Why Rushing Costs You Later
Gunite needs time to cure before anything else happens to it. I keep it moist for roughly seven to ten days after application, which lets the concrete reach the strength it was engineered for rather than the strength it has after 48 hours. Some builders skip or shorten this step to move faster. I don’t, because a shell that hasn’t cured properly is more prone to cracking once tile, decking, and water load get added on top of it.
This is also the point where I’m thinking ahead to how the pool will hold up through a North Texas winter. My cold-weather building considerations factor into plumbing depth and equipment placement decided back in Step 4, but the curing period is when the shell itself needs to be sound enough to handle freeze cycles for decades, not just the first season.
Step 7: Tile, Coping, Decking, and Interior Finish
Once the shell has cured, tile goes in at the waterline, coping is set around the edge, and the interior surface, plaster, pebble, or quartz, gets applied. This is the layer everyone sees and touches, but it only works because of everything underneath it that nobody sees.
Decking comes next, and material choice here changes both the look and the maintenance of the pool for years. I walk clients through options in my pool decking materials page, covering travertine, flagstone, and stamped concrete. LED fixtures get set during this phase too, tied into the conduit run back in Step 4, and I cover how I plan that out in my LED lighting design notes. If a client wants a sheer descent or bubbler as part of the design, those also get finished here, and my page on water features goes through the mechanics of how they’re built into the shell rather than added after the fact.
What Each Phase Costs and Where Your Budget Actually Goes
Homeowners often assume the biggest cost is the concrete shell itself. In practice, engineering, steel, plumbing, and equipment together account for more of the budget than the gunite application. The shell is the part you see going up in a day, but the design work, the steel fabrication, and the rough-in plumbing represent weeks of planning and labor that happen before that day arrives.
Finish materials, tile, coping, decking, and interior surface, are where cost varies the most from one build to the next, since travertine and quartz finishes run higher than basic plaster and stamped concrete. Equipment selection, filtration size, heater, and automation level also shift the budget meaningfully. For homeowners weighing how to structure payment across these phases, I cover financing options that align with the actual construction schedule rather than a single lump sum.
It’s also worth knowing that a shell built to hold up on DFW clay soil, with steel sized correctly and cured on schedule, costs less over ten years than one that needs early pool resurfacing because a step got skipped. Paying for the engineering and the curing time up front is cheaper than paying for a repair later.
Realistic DFW Timeline From Contract to First Swim
From signed contract to first swim, a custom gunite pool in North Texas typically runs twelve to sixteen weeks, though permitting delays or weather can push that out. Design and permitting take two to four weeks. Excavation and steel might take another week combined. Plumbing and electrical rough-in adds a few more days, and gunite application itself is one day, followed by seven to ten days of curing. Tile, decking, and interior finish generally take another two to three weeks depending on material selection and weather.
I give homeowners a schedule up front and update it as each phase closes out, because the biggest source of frustration on any build isn’t the length of the process, it’s not knowing where things stand. I’m on-site through all of it myself, which is part of why I explain in my hands-on builder page that a smaller operation tends to catch problems earlier than a large company running several crews at once.
Frequently Asked Questions
How long does it take to build a gunite pool in DFW?
Most custom gunite pools take twelve to sixteen weeks from signed contract to completion, factoring in design, permitting, construction, and curing time. Weather and municipal permitting timelines can extend that.
Why does gunite need to cure before finishing work starts?
Gunite reaches its engineered strength over roughly seven to ten days of moist curing. Adding tile, decking, or interior finish before that point risks cracking once the pool is filled and under load.
Why is gunite the standard choice for pools built on DFW soil?
Gunite is formed and reinforced on-site to match the specific engineering needs of a lot, which matters on expansive clay soils that shift seasonally. A shell built and steeled for the exact conditions on that property holds up to that movement in a way a mass-produced shape isn’t designed to.
What causes cracking in a gunite pool?
Cracking is usually the result of under-engineered steel, rushed curing, or a shell that wasn’t designed for the soil conditions on that specific lot. Correct engineering and full curing time address all three.
Do I need a permit to build a gunite pool in North Texas?
Yes. Every municipality in the DFW area requires permitted, engineered plans before excavation begins. Timelines vary by city, typically one to four weeks.
What is the most expensive part of a gunite pool build?
Engineering, steel, and equipment together usually account for more of the total cost than the gunite shell itself, with finish materials like tile and decking adding the widest range depending on selection.
If you’re planning a build and want to talk through what your specific lot needs, call me at 817.721.2452.