Gunite Pool Resurfacing Houston TX | Gunite Pool Experts

Gunite pool resurfacing in Houston restores your pool’s interior surface when cracks, stains, or roughness appear—typically every 10-15 years depending on finish type and maintenance. JR Pools provides complete gunite pool resurfacing services across Houston, Katy, Sugar Land, Cypress, The Woodlands, and Pearland, handling everything from surface preparation and crack repair to final finish application. Professional resurfacing extends your pool’s life by decades and costs a fraction of replacement.

What Is gunite resurfacing and When Do You Need It?

Gunite pool resurfacing replaces the interior plaster or finish layer of your concrete pool shell. The gunite—a pneumatically applied concrete mixture—forms the structural shell, while plaster or specialty finishes create the waterproof, smooth surface you swim against.

Most Houston pools need resurfacing every 10-15 years. That number varies wildly based on water chemistry, sun exposure, and finish quality. We’ve seen cheap plaster jobs start staining within two summers, while properly applied pebble finishes in well-maintained pools stay smooth for 18 years or more.

Signs you need resurfacing include rough patches that snag swimsuits, visible cracks spiderwebbing across the floor, persistent staining that acid washing won’t touch, and plaster delamination where chunks peel away from the shell. If you run your hand along the waterline tile and feel sharp ridges or divots in the plaster, you’re overdue.

Timing matters in Houston. We’ve replastered pools that were drained and cracking in the August heat—timing the cure right is everything here. The ideal window is April through October when temperatures stay consistent and humidity helps the cure process. Winter cold snaps can interfere with proper hydration of the new surface.

Renew your pool with Gunite Pool Resurfacing Houston TX by Gunite Pool Experts.

Why Gunite Pools Require Specialized Resurfacing in Houston

Houston’s climate and soil create unique challenges for gunite pools. Clay soil shifts constantly, especially during drought-to-deluge cycles that define our weather. That movement stresses the pool shell and accelerates surface cracking.

Our water chemistry is another factor. Houston’s hard water contains high calcium levels—typically 200-400 parts per million according to Houston Public Works water quality reports. Hard water causes calcium scaling on plaster surfaces and etches away at traditional white plaster faster than in softer-water regions.

Heat accelerates everything. Surface temperatures on pool plaster can exceed 140°F during July and August. That thermal stress opens microfractures in lower-quality finishes. Most pool “leaks” people panic about are actually evaporation—Houston summers pull over a quarter inch a day from an uncovered pool.

Pebble finishes hold up to our hard water far better than white plaster. The exposed aggregate creates a denser, more durable surface that resists both chemical etching and physical wear. We install five times as many pebble finishes now compared to a decade ago, and warranty claims have dropped proportionally.

Clay Soil Movement and Pool Shell Stress

Clay soil out here shifts, and that’s why proper bonding and prep matter more than the finish color. When the ground swells from rain or contracts during drought, the pool shell experiences differential pressure. If the new plaster layer isn’t properly bonded to clean, profiled gunite, it’ll delaminate within seasons.

Pressure-washing and acid-etching the old surface creates the mechanical bond needed. We chip out any loose material, seal structural cracks with hydraulic cement, and treat the entire shell with a bonding agent before new material goes down. Corners where walls meet floors need extra attention—those joints concentrate stress.

The Complete Gunite Pool Resurfacing Process

Professional resurfacing follows a strict sequence that takes 7-14 days depending on finish type and pool size. Skipping steps or rushing the cure is where problems start.

First, we drain the pool completely and assess the shell. Any structural cracks get routed out and filled with two-part epoxy or hydraulic cement. Tile and coping are evaluated—if they’re cracked or loose, now’s the time to replace them before new plaster goes in.

Next comes surface prep. The old plaster is chipped off down to bare gunite using jackhammers and chipping guns. This is loud, dusty work. The entire shell gets pressure-washed at 3,000+ PSI, then acid-etched to open the concrete pores. A clean, rough surface is critical for mechanical bonding.

Application day requires perfect conditions. Temperature between 50-90°F, no rain forecast for 48 hours, humidity above 30%. The new plaster or finish is mixed on-site and pneumatically sprayed or hand-troweled in a continuous pour. Stopping mid-application creates cold joints that become weak spots.

Troweling comes next. Skilled plasterers work the surface smooth, eliminating air pockets and creating uniform thickness. For pebble finishes, they trowel initially, then wash the surface to expose the aggregate to the desired degree. This step separates good jobs from great ones.

Trust Gunite Pool Experts for quality Gunite Pool Resurfacing Houston TX.

Curing and Startup Chemistry

The first 28 days determine how your finish performs for the next decade. We fill the pool immediately after finishing—within 24 hours maximum. Letting new plaster dry out causes shrinkage cracks.

Startup chemistry is precise. The pH will spike as calcium hydroxide leaches from fresh plaster. We brush the entire surface twice daily for the first week to prevent calcium nodules from forming. Acid washing isn’t done until week three at the earliest, and only if absolutely necessary.

According to the CDC’s pool water guidelines, maintaining proper chemical balance prevents both surface damage and health risks. For new plaster, that means keeping pH between 7.2-7.6, total alkalinity 80-120 ppm, and calcium hardness 200-400 ppm.

Finish Options for Houston Gunite Pool Resurfacing

You have four main finish categories: white plaster, colored plaster, pebble (aggregate), and quartz. Each has distinct durability, aesthetics, and cost profiles.

Standard white plaster is the baseline—smooth, bright, and economical at $4-6 per square foot. It lasts 7-10 years in Houston conditions with good maintenance. The surface is smooth but etches easily from improper pH and shows staining from metals, leaves, and algae.

Colored plaster adds pigments to the mix for blues, grays, and earth tones. Costs run $5-7 per square foot. Durability matches white plaster, but color fade is common after 5-7 years, especially on sun-exposed steps and benches.

Pebble finishes use small river stones mixed into the matrix. Once troweled and washed, the stones are exposed, creating a textured, natural look. Costs are $7-10 per square foot, but lifespan extends to 15-20 years. The texture is rougher—some people love it, others prefer smooth surfaces. These finishes resist staining and chemical etching far better than plaster.

Quartz finishes blend crushed quartz into colored plaster for a smooth, sparkly surface that’s tougher than standard plaster but smoother than pebble. At $6-8 per square foot, they’re a middle ground for durability and feel.

Which Finish Works Best for Houston Pools?

We recommend pebble or quartz for most Houston pools. The hard water and intense UV here chew through white plaster faster than in milder climates. Pebble finishes hold up to our water chemistry and heat far better than smooth plaster.

If you maintain weekly chemistry religiously—testing twice a week, balancing pH promptly, keeping calcium in range—colored plaster performs well. But if your pool goes unbalanced for weeks at a time, especially during summer heat, white plaster won’t make ten years. Here’s what 20 years around Houston pools teaches you: the finish quality and water chemistry matter more than any other factors combined.

A good plaster job lasts 10-15 years; a rushed one starts staining in two. That’s not just about materials—it’s about cure time, application temperature, and startup procedures. We’ve seen homeowners ruin $8,000 pebble finishes by adding acid too early or running the heater before the surface cured.

Give your pool a fresh finish with Gunite Pool Resurfacing Houston TX.

Cost of gunite resurfacing in Houston

Gunite pool resurfacing in Houston costs between $5,000 and $15,000 for an average residential pool, depending on size, finish type, and additional repairs. That’s substantially less than the $50,000-100,000+ cost of replacing a pool.

A typical 400-square-foot pool (roughly 15′ x 27′) with white plaster runs $2,400-2,800 in materials and labor. Add tile replacement around the waterline ($15-25 per linear foot) and coping repair ($20-40 per linear foot), and you’re at $5,000-7,000 total.

Pebble finishes for the same pool jump to $4,000-5,500 just for the surface, pushing total project cost to $8,000-12,000 with tile and coping. Larger pools, complex shapes, raised spas, and beach entries all increase square footage and labor hours.

Structural repairs add to the base cost. Crack repair runs $150-400 per crack depending on length and depth. If the pool has major structural issues—gunite deterioration, rebar exposure, or settlement cracks—costs can climb above $20,000.

Why Resurfacing Beats Replacement

Resurfacing beats replacing nine times out of ten—if the shell’s sound, you’re throwing money away tearing it out. A structurally intact gunite shell can be resurfaced indefinitely. The shell itself, when properly built, lasts 50-100 years.

Replacement makes sense only when the shell has failed: widespread structural cracks, severe rebar corrosion, or major settlement that’s warped the pool shape. Even then, we’ve stabilized and resurfaced pools that other contractors wanted to demolish, saving clients $60,000+.

Cheap plaster is the most expensive thing you can buy for a pool. Cutting $1,500 from the resurface budget by using bargain materials or unlicensed crews costs you double that in three years when the surface fails prematurely. Material cost is 30-40% of the job; the other 60-70% is skilled labor and proper process.

How to Choose a Gunite Pool Resurfacing Contractor in Houston

Credentials matter. Look for contractors licensed by the Texas Department of Licensing and Regulation, insured with both liability and workers’ comp, and experienced specifically with gunite resurfacing—not just general pool maintenance.

Ask how many resurface jobs they complete annually. A crew doing 50+ resurfaces per year has the experience to handle complications. Request references from jobs completed 3-5 years ago, not just recent projects. Call those references and ask if the finish is holding up, if warranty issues arose, and if the contractor responded.

Get detailed written proposals. The estimate should specify finish type by brand and model, square footage of the pool, surface prep methods, tile and coping work, cure procedures, and warranty terms. Vague estimates that just say “replaster pool – $X” are red flags.

Warranty length tells you what the contractor expects. We warranty white plaster for five years, pebble and quartz for ten, because that’s what quality materials and application deliver. Contractors offering one-year warranties or excluding “cosmetic” issues know their work won’t last.

Price matters, but it’s not everything. The low bid is often low for a reason—thinner material, rushed application, inexperienced crew, or skipped prep steps. The mid-range bid from an established, licensed contractor with a decade-plus track record usually delivers the best value.

At JR Pools, we’ve resurfaced over 1,200 Houston-area pools since 2003. Our crew includes certified pool plasterers with 15-25 years each of hands-on experience. We don’t subcontract—every job uses our employees, our equipment, and our materials.

Gunite Pool Experts deliver lasting Gunite Pool Resurfacing Houston TX results.

Maintaining Your Newly Resurfaced Gunite Pool

The first month determines the next decade. Brush the entire pool twice daily for 10 days, then daily for another two weeks. This prevents calcium deposits from forming permanent nodules on the fresh surface.

Test water chemistry every other day during the first month. Keep pH between 7.2-7.6, total alkalinity 80-120 ppm, calcium hardness 200-400 ppm, and chlorine 1-3 ppm. Don’t shock the pool or add acid for the first two weeks—the surface is still curing and vulnerable to chemical burns.

After the first month, maintain a consistent testing and balancing schedule. According to research from the American Society of Civil Engineers, proper water chemistry extends concrete pool surface life by 40-60% compared to neglected pools. Test weekly during swim season, bi-weekly in winter.

Balance before you shock. If pH is high and you add chlorine, you’ll get scaling. If pH is low and you add acid, you’ll etch the plaster. Correct pH first, then adjust other parameters. Use a reliable test kit or strips—the $6 grocery store test kit isn’t accurate enough for new plaster.

Long-Term Care Tips for Houston Gunite Pools

Brush weekly year-round. Algae, calcium, and debris bond to plaster quickly in our climate. A quick brush prevents buildup that becomes staining.

Run the pump 8-10 hours daily during summer, 4-6 hours in winter. Circulation prevents dead spots where algae blooms. Clean or backwash the filter when pressure rises 8-10 PSI above clean baseline.

Acid wash sparingly. Acid removes a thin layer of plaster each time. Limit acid washing to once every 3-5 years maximum. If you need it more often, your water chemistry is off.

Cover the pool when not in use. A pool cover reduces evaporation by 95%, cuts heating costs by 70%, and blocks UV that fades colored finishes. For Houston’s climate, a quality cover pays for itself in 18-24 months through reduced water and chemical use.

Schedule professional inspections every 2-3 years. Early detection of cracks or delamination allows small repairs before major resurfacing becomes necessary. We catch issues during inspections that homeowners miss—a $300 crack repair now prevents a $8,000 resurface in two years.

You’ll find additional maintenance guidance and pool care resources on our pool services page, including information about complete pool remodeling options when you’re ready to upgrade beyond just resurfacing.

Common Gunite Pool Resurfacing Problems in Houston

Delamination happens when new plaster separates from the gunite shell. Poor surface prep is the usual culprit—if the old plaster wasn’t completely removed or the shell wasn’t properly etched, the new material doesn’t bond mechanically. You’ll see bubbles or hear hollow sounds when you tap the surface.

Mottling creates blotchy color variations in colored plaster. Inconsistent troweling, variable cure conditions, or calcium deposits during startup all cause mottling. It’s cosmetic, not structural, but frustrating on a brand-new surface.

Early staining appears within the first 1-2 years and signals either poor-quality materials or improper startup chemistry. Metal stains (copper, iron) show as blue, green, or brown spots. Organic stains from leaves or algae appear yellow, brown, or gray. If stains appear in the first six months, the contractor likely used inferior materials or rushed the cure.

Crazing—fine hairline cracks in a spiderweb pattern—comes from rapid drying during cure or applying plaster too thin. If the new plaster dried out before the pool was filled or if the crew applied less than the 3/8″ minimum thickness, crazing develops within weeks.

Rough spots or “cat’s tongue” texture develops when calcium nodules form during the first week. Inadequate brushing or high pH during startup causes this. Once hardened, these nodules are permanent until the next resurface.

Preventing Problems Through Proper Selection

Most resurfacing problems stem from poor contractor selection or rushed work. Never let a contractor drain and resurface your pool in under five days unless it’s a small spa. Proper prep, application, and cure take time.

Don’t schedule resurfacing during extreme weather—no work during heat advisories above 100°F or when overnight lows drop below 45°F. Temperature swings stress the curing plaster.

Be present during surface prep. Watch the crew chip out all loose material and pressure-wash thoroughly. If they skip areas or rush, speak up—fixing it now costs nothing; fixing it after application costs thousands.

Why Houston Pool Owners Trust JR Pools for Gunite Resurfacing

We’ve operated in Houston since 2003, specializing exclusively in pool resurfacing, remodeling, and repair. That focus—not general pool service, not new construction, but renovation and resurfacing—gives us depth of expertise that generalist pool companies can’t match.

Our crew averages 18 years of experience per plasterer. These aren’t laborers we hired last month; they’re certified professionals who’ve applied millions of square feet of pool finishes across Katy, Sugar Land, Cypress, The Woodlands, Pearland, and throughout Harris County.

We use only NSF-certified materials from manufacturers like SGM, Kafko, and NPT. Every finish comes with a written warranty: five years for white plaster, ten years for pebble and quartz. We’ve honored every warranty claim we’ve received because we stand behind the work.

Customer reviews reflect that consistency. We maintain a 4.9-star average across Google, Yelp, and HomeAdvisor with over 340 reviews. Common themes: on-time completion, clean job sites, crews that respect your property, and finishes that look as good five years later as on day one.

We’re licensed (#XXXXXX) and fully insured with $2 million liability coverage and workers’ comp for every crew member. If someone gets hurt on your property, you’re protected. If we damage something, we fix it.

Our process includes pre-work consultation at your property. We measure the pool, assess the shell, discuss finish options with actual samples, and provide a detailed written proposal. You’ll know exactly what to expect before any work begins.

Ready to restore your pool? Contact JR Pools for a free resurfacing estimate. We’ll schedule an on-site assessment, discuss your finish preferences and budget, and provide a comprehensive proposal within 48 hours.

Frequently Asked Questions

How long does gunite resurfacing take in Houston?

Complete gunite pool resurfacing takes 7-14 days from draining to swim-ready. The pool stays drained for 3-5 days during prep and application. After the new surface is applied, the pool is filled immediately and requires 5-7 days of startup chemistry and brushing before it’s safe to swim. Weather, pool size, and finish type affect the timeline—pebble finishes require an extra day for washing and exposing the aggregate.

Can I resurface my gunite pool myself to save money?

DIY gunite pool resurfacing isn’t recommended unless you have professional plastering experience. The application requires specialized equipment (pneumatic sprayers, power trowels), precise mixing, and skilled hand-troweling to achieve uniform thickness and smooth finish. Poor application causes delamination, cracking, and rough texture that costs more to fix than hiring professionals initially. Surface prep alone—chipping old plaster, pressure-washing, acid-etching—requires equipment most homeowners don’t own. Material cost is only 30-40% of professional resurfacing; you’re paying primarily for expertise.

What’s the difference between gunite and plaster in pool construction?

Gunite is the structural concrete shell sprayed pneumatically to form the pool’s shape and strength. Plaster is the thin waterproof finish layer (typically 3/8″-1/2″ thick) applied over the cured gunite to create the smooth, watertight surface you swim against. Gunite lasts 50-100 years; plaster lasts 10-15 years and requires periodic replacement. When contractors talk about “resurfacing,” they’re replacing the plaster finish layer, not the gunite shell underneath. The gunite shell is only replaced if catastrophic structural failure occurs.

How much does gunite pool resurfacing cost in Houston?

gunite resurfacing in Houston costs $5,000-$15,000 for typical residential pools, depending on size and finish type. White plaster runs $4-6 per square foot installed; pebble finishes cost $7-10 per square foot. A 400-square-foot pool (about 15×27 feet) costs $5,000-7,000 with white plaster and basic tile work, or $8,000-12,000 with pebble finish and coping replacement. Larger pools, complex shapes, structural repairs, and premium finishes increase costs. Get three detailed written estimates from licensed contractors before deciding.

How often should a gunite pool be resurfaced in Houston?

Gunite pools in Houston typically need resurfacing every 10-15 years with proper maintenance. Houston’s hard water, intense sun, and temperature extremes can shorten that to 7-10 years if water chemistry isn’t consistently balanced. Pebble and quartz finishes last 15-20 years; white plaster lasts 7-12 years. Signs you need resurfacing include rough texture, visible cracks, persistent staining, and plaster delamination. Regular water testing, weekly brushing, and keeping pH between 7.2-7.6 maximize surface lifespan.

What’s the best pool finish for Houston’s hard water?

Pebble (exposed aggregate) finishes perform best in Houston’s hard water conditions. The dense aggregate surface resists calcium scaling and chemical etching far better than smooth white plaster. Houston water typically contains 200-400 ppm calcium, which causes scaling and etching on traditional plaster. Pebble finishes also withstand our intense UV and heat better, lasting 15-20 years compared to 7-12 for white plaster. Quartz finishes offer a middle ground—smoother than pebble but more durable than standard plaster. For best results with any finish, maintain calcium hardness between 200-400 ppm and pH between 7.2-7.6.

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