San Antonio Fiberglass Pool Repair & Resurfacing
7-10 Day Install

Transform your deteriorating pool with permanent fiberglass. In San Antonio's challenging climate—hard water, expansive clay soil, and extreme heat—traditional plaster and concrete surfaces fail repeatedly, requiring costly resurfacing every 5-7 years.

Hexagon Fiberglass Pools specializes exclusively in fiberglass solutions that eliminate this cycle permanently. Choose our proprietary HEXConvert™ system with comprehensive 10-year labor and material warranty, or premium Fibre Tech™ technology with industry-leading 25-year material warranty.

10 or 25 Yr

Warranty Options

7-10 Days

Installation

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San Antonio Pool Services

Complete fiberglass solutions for every pool type

Fiberglass Pool Resurfacing

Transform deteriorating plaster, marcite, or pebble surfaces with professional fiberglass application — eliminating the 7-year replastering cycle forever.

✓Permanent fiberglass vs. recurring $8,000–$12,000 replastering
✓Glass-smooth surface — never rough again
✓Up to 45% reduction in chemical usage
✓Algae-resistant non-porous surface
✓Choice of 10-yr or 25-yr warranty protection

7-10 Day Install 10 or 25-Yr Warranty

Learn About SA Resurfacing

What Is Pool Resurfacing — and Why Does Your San Antonio Pool Need It?

Pool resurfacing is the process of removing or overcoating your pool's existing interior finish and applying a new, durable surface layer directly to the shell. Every pool surface degrades over time — plaster chalks and stains, marcite roughens and scales, vinyl liners fade and tear. In San Antonio, that degradation is dramatically accelerated by three compounding factors: Edwards Aquifer hard water with calcium hardness exceeding 400 ppm that deposits mineral scale on every porous surface, Austin Chalk and Eagle Ford clay geology that shifts seasonally and cracks rigid finishes, and an 8-month pool season with 220+ sunny days per year that subjects surfaces to sustained UV exposure, thermal cycling, and chemical wear.

Left unaddressed, a failing pool surface becomes progressively more expensive. Rough plaster holds SA's mineral deposits like a sponge, requiring increasingly aggressive acid washing that removes surface material and shortens the replacement cycle. Cracks and delamination allow water migration behind the shell — and in San Antonio's caliche and clay substrate, that moisture creates hydrostatic pressure episodes that can damage the structural shell itself. Resurfacing before the surface reaches failure is always less expensive than remediation after it.

Signs Your San Antonio Pool Needs Resurfacing

⚠ Rough or sandpaper texture on pool floor and walls
⚠ Persistent mineral staining Edwards Aquifer water won't release
⚠ Visible cracks, chips, or delaminating patches
⚠ Chalky white calcium deposits or efflorescence
⚠ Recurring algae despite correct chemical balance
⚠ Fading, discoloration, or uneven finish color
⚠ Unexplained water loss (surface micro-leaks)
⚠ Surface age over 7 years on plaster or marcite

Pool Resurfacing Services in San Antonio, TX

Hexagon resurfaces every pool type found in San Antonio — from aging plaster gunite pools in Alamo Heights and Stone Oak to vinyl-liner pools in Helotes and Boerne. All paths lead to the same outcome: a permanent fiberglass surface engineered for South Texas conditions.

Most Common

Plaster & Marcite Pool Resurfacing

The majority of San Antonio pools built before 2010 have white plaster or marcite interiors. Edwards Aquifer water at 400+ ppm calcium hardness is exceptionally destructive to these porous surfaces — depositing scale within months and etching the surface chemistry that maintains a balanced pH. Hexagon removes the deteriorated plaster layer, repairs any structural cracks in the gunite shell driven by Austin Chalk clay movement, and applies HEXConvert™ or Fibre Tech™ fiberglass directly to the prepared surface — ending the 5–7 year replaster cycle permanently.

✓ Replastering eliminated — not deferred
✓ Structural crack repair included in prep
✓ Fiberglass bonds directly to gunite shell
✓ Glass-smooth finish, never rough again

Growing Demand

Pebble & Aggregate Finish Resurfacing

Pebble Tec, Pebble Sheen, and exposed-aggregate finishes were popular in San Antonio's 2000s–2010s construction boom, particularly in Schertz, New Braunfels corridor, and the far northwest side. While attractive when new, aggregate finishes roughen significantly within 8–12 years under Edwards Aquifer hard water — becoming abrasive on swimmers and increasingly difficult to balance chemically. Fiberglass resurfacing over aggregate delivers a glass-smooth, chemically neutral surface at a fraction of the cost of full shell demolition and re-plaster.

✓ Eliminates roughness accelerated by Edwards Aquifer 400+ ppm mineral deposits in aggregate gaps
✓ Applied over existing aggregate — no disruption to San Antonio outdoor kitchen or landscaping
✓ Chemical neutrality reduces the intensive balancing burden of SA's 8-month swim season
✓ Unified smooth surface across pool and spa

Vinyl Liner Pools

Vinyl Liner Pool Resurfacing

Vinyl liner pools in San Antonio face a $4,000–$6,000 replacement cost every 7–10 years, with SA's UV intensity and hard water chemistry accelerating liner degradation at the upper end of that range. Hexagon resurfaces vinyl liner pools by preparing the existing shell structure and applying a permanent fiberglass interior — eliminating liner replacement cycles entirely. The result is a non-porous, algae-resistant surface that outlasts any vinyl liner on longevity, chemistry, and aesthetics.

✓ Liner replacement cycle ends permanently
✓ No ongoing $4–6k liner replacement costs
✓ Permanent non-porous surface applied to shell
✓ Handles any SA pool shape or configuration

Existing Fiberglass

Fiberglass Pool Re-Resurfacing

Fiberglass pools 15–25 years old often show oxidation, gel coat fading, osmotic blistering, or spider cracking — and San Antonio's combination of 220+ annual sunny days and Edwards Aquifer hard water creates one of the most demanding UV and mineral environments in Texas. Hexagon re-resurfaces aging fiberglass shells by grinding, repairing, and applying a fresh HEXConvert™ or Fibre Tech™ system over the existing shell. The result is a pool that performs and looks like a new fiberglass installation, with full warranty coverage starting from day one.

✓ Restores shells degraded by SA's 220+ annual sunny days and Edwards Aquifer mineral load
✓ Blisters and Austin Chalk–driven spider cracks repaired before application
✓ Full warranty — transferable for JBSA and Fort Sam PCS closings
✓ 15–20 year life extension on San Antonio's aging fiberglass inventory

Why Fiberglass Resurfacing — Not Replaster, Pebble Tec, or Epoxy Paint

San Antonio homeowners are typically presented with four resurfacing options. Here is an honest comparison of how each performs in South Texas conditions over a 20-year ownership horizon.

Surface Type	Lifespan	20-Yr Cost	Edwards Aquifer	Clay Soil
White Plaster	5–7 yrs	$54k–$96k	Scales within months	Cracks with clay shift
Marcite	6–8 yrs	$48k–$80k	Stains & scales rapidly	Cracks with movement
Pebble / Aggregate	8–12 yrs	$40k–$64k	Roughens in hard water	Cracks with movement
Epoxy Paint	2–4 yrs	$60k–$90k+	Peels in SA heat & UV	Delamination risk
✓ HEXConvert™ / Fibre Tech™ Fiberglass	20–30 yrs	$12k–$19k	Non-porous — no scale	Flexes — no cracking

* 20-year cost estimates based on San Antonio pool averages (600–900 sq ft). Includes material, labor, and chemistry costs per cycle.

Choose Your System: HEXConvert™ or Fibre Tech™

Both systems apply a permanent fiberglass surface to your existing pool. The difference is warranty depth and manufacturing origin.

Hexagon-Proprietary

HEXConvert™

✓10-year comprehensive labor & materials warranty
✓Fastest installation path — 7 days typical in SA climate
✓Ideal for pools staying with current owner 10+ years
✓Available in 8 premium color options

Best for: SA homeowners prioritizing full warranty coverage and installation speed.

Industry Standard

Fibre Tech™

✓25-year transferable material warranty
✓Warranty transfers to next owner — adds documented resale value
✓Preferred for SA properties near JBSA and medical center with resale plans
✓Available in 12 premium color options

Best for: SA owners planning to sell — the transferable warranty is a documented asset in Bexar County's active real estate market.

Ready to End the Replastering Cycle in San Antonio?

Hexagon assesses your San Antonio pool, confirms the right system, and gives you a fixed-price quote — no surprises, no upsells, no replaster in 5 years.

Get Your Free San Antonio Resurfacing Assessment

Save $18k–$30k lifetime

Fiberglass Pool Conversion

Vinyl liner, gunite, concrete, or aging fiberglass — Hexagon converts all pool types to superior fiberglass without excavation.

Vinyl liner → fiberglass

Eliminates annual $3–5k liner replacement

Gunite → fiberglass

Stops structural cracking forever

Concrete → fiberglass

Ends perpetual maintenance cycles

Fiberglass restoration

Modern materials, extended service life

HEXConvert™

10-yr comprehensive warranty

Fibre Tech™

25-yr material warranty

Explore SA Conversion

What Is a Fiberglass Pool Conversion — and Is It the Right Choice for Your San Antonio Pool?

A fiberglass pool conversion is a complete interior system change — transforming your existing pool from its current surface technology (vinyl liner, plaster, gunite, concrete) to a permanent, non-porous fiberglass shell. Unlike resurfacing, which preps and overcoats a surface that still has usable life, conversion is the right choice when the underlying system itself has reached the end of its viable service: when a vinyl liner pool has had two or more liner replacements, when a gunite shell has sustained repeated structural cracking from San Antonio's clay soil movement, or when the cumulative cost of continued maintenance now rivals the one-time cost of a permanent solution.

Critically, Hexagon performs every San Antonio fiberglass pool conversion without excavation and without disruption to your existing decking, landscaping, or outdoor living infrastructure. For SA properties — where mature live oaks, custom outdoor kitchens, extended covered patios, and fencing make any ground disturbance costly and complicated — this is often the deciding factor. The entire conversion is completed from inside the pool in 7–10 days, with zero contact with surrounding property.

You're a Conversion Candidate If…

✓ Your vinyl liner has been replaced once or more already
✓ Your gunite or concrete pool cracks recur after every repair
✓ Annual maintenance costs exceed $3,000 with no improvement
✓ Your pool has multiple simultaneous failure types
✓ You're planning a renovation and want a permanent solution
✓ Your pool is 15+ years old and has never had a system upgrade
✓ You want to eliminate all future resurfacing from your budget
✓ You're preparing the property for sale and want a warranty asset

Fiberglass Pool Conversion by Pool Type

Hexagon converts every pool type found in San Antonio. The conversion method is tailored to the existing shell structure — but the outcome is always the same: a permanent, low-maintenance fiberglass interior with full warranty coverage.

Most Requested

Gunite & Shotcrete Pool Conversion

Gunite and shotcrete pools are the most common pool type in San Antonio's established neighborhoods — Alamo Heights, Stone Oak, Castle Hills, Terrell Hills, and the mid-century streets of Monte Vista. Over time, San Antonio's Austin Chalk and Eagle Ford clay formations cause the gunite shell to develop structural cracks that return after every repair as the ground shifts with seasonal moisture cycles. Fiberglass conversion permanently ends this cycle by applying a flexible, non-porous surface that accommodates the soil movement that makes rigid concrete crack.

✓ Structural crack cycle ends permanently
✓ Flexible fiberglass accommodates SA clay movement
✓ Applied directly to prepared gunite or shotcrete shell
✓ Full pool and spa unified under one surface

Highest ROI

Vinyl Liner Pool Conversion

Vinyl liner pools in San Antonio carry a $4,000–$6,000 replacement cost every 7–10 years — with SA's 220+ annual sunny days and alkaline Edwards Aquifer water chemistry accelerating liner degradation toward the shorter end of that range. A fiberglass conversion eliminates this cycle entirely. Hexagon prepares the existing pool shell structure, repairs any underlying damage, and installs a permanent fiberglass interior. Pools over 600 sq ft typically recover the full conversion cost within 10–12 years through eliminated liner costs alone.

✓ $4–6k liner replacement cost eliminated forever
✓ Underlying shell damage repaired before application
✓ Non-porous surface — no liner wrinkling, fading, or tearing
✓ Payback period 10–12 years on standard SA pool sizes

Full System Upgrade

Concrete Block Pool Conversion

Older concrete block pool shells — found in San Antonio's mid-century neighborhoods including Southtown, King William, Monte Vista, and the older parts of Leon Valley — are particularly vulnerable to mortar degradation and water infiltration in clay soil environments. Hexagon waterproofs and stabilises the block structure before applying fiberglass, creating a sealed, unified interior surface that stops water migration and restores the pool to full structural integrity without the cost of full demolition and rebuild.

✓ Southtown and King William historic block structures assessed and stabilized first
✓ Mortar joints sealed against Edwards Aquifer caliche moisture infiltration
✓ Water migration behind shell permanently stopped
✓ Preserves historic San Antonio lot character — viable alternative to demolition

Premium Upgrade

Fiberglass-to-Fiberglass Conversion

An existing fiberglass pool with a failing original surface — osmotic blistering, deep spider cracks, severe oxidation, or delamination — is a strong conversion candidate. San Antonio's combination of 220+ sunny days per year and Edwards Aquifer hard water at 400+ ppm creates one of the most demanding UV and mineral environments in Texas, accelerating gel coat failure on older fiberglass pools. Rather than a patch-and-repair cycle on a compromised shell, Hexagon removes the failed surface layer, inspects and repairs the structural shell, and applies a fresh HEXConvert™ or Fibre Tech™ system with full new warranty coverage.

✓ Failed gel coat — including Edwards Aquifer 400+ ppm calcium deposits — fully removed
✓ Shell structural inspection confirms Austin Chalk and Eagle Ford–stressed shell integrity
✓ Full warranty — transfers at JBSA PCS closing, documented at title
✓ Preferred over repeated patch repairs on San Antonio's aging pool inventory

Why San Antonio Homeowners Choose Conversion Over Continued Maintenance

The financial and practical case for conversion is clear when you compare the cumulative cost of maintaining a traditional surface against the one-time cost of a permanent fiberglass system.

No Excavation. No Disruption.

The entire conversion is performed from inside the pool. No digging, no equipment on your lawn, no damage to decking, irrigation, mature live oaks, or outdoor kitchen structures. San Antonio properties with custom outdoor living spaces, pergolas, and fencing present no complications. Hexagon has never required ground disturbance for a conversion project.

The 20-Year Financial Case

A San Antonio pool on a traditional plaster or vinyl liner cycle costs $48,000–$80,000 over 20 years in surface maintenance alone — accelerated by Edwards Aquifer hard water and SA's extended pool season. A one-time fiberglass conversion costs $15,000–$25,000 and requires no further surface work within the warranty period. The delta — up to $55,000 saved — is the conversion's return on investment.

Military & Medical Community Value

San Antonio's large JBSA, Fort Sam, and Brook Army Medical Center community means many homeowners face PCS moves every 2–4 years. The Fibre Tech™ 25-year transferable warranty is a documented resale asset that survives a sale and follows the property — making fiberglass conversion one of the highest-ROI pool improvements in the Bexar County market.

Your Conversion System: HEXConvert™ or Fibre Tech™

Both systems deliver a permanent fiberglass interior. Your choice determines warranty depth and transferability.

Hexagon-Proprietary

HEXConvert™

✓10-year comprehensive labor & materials warranty
✓Fastest completion — 7-day average in SA climate
✓Ideal for long-term owners with no near-term sale plans
✓Available in 8 premium color options

Best for: SA homeowners maximizing long-term value and minimizing time out of the pool.

Industry Standard

Fibre Tech™

✓25-year transferable material warranty
✓Warranty transfers to next owner — survives a PCS move or sale
✓Preferred for military families and owners with a 5–10 year sale horizon
✓Available in 12 premium color options

Best for: SA owners planning to sell — the transferable warranty is a tangible, documented value in Bexar County's active market.

Stop Maintaining. Start Converting.

Hexagon assesses your San Antonio pool's existing structure, recommends the right conversion system, and gives you a fixed-price quote. No excavation. No disruption to your outdoor living space. Done in 7–10 days.

Get Your Free Conversion Assessment

Full Gel Coat Restoration

Complete color-matched refinish of the entire pool surface

Oxidation & Fade Removal

Restores chalky, sun-faded fiberglass to original gloss

Spider Crack Filling

Structural flex cracks filled and color-blended before gelcoat

Blister & Delamination Fix

Blisters ground out, base repaired, gelcoat applied over top

Existing Fiberglass Pools

Pool Gelcoat Repair

Already have a fiberglass pool? Gel coat fades, oxidises, and develops spider cracks over time — especially under San Antonio's UV intensity and hard water. Re-gelcoating restores your pool to factory-fresh condition without draining and replacing the shell.

✓Fraction of the cost of full pool replacement
✓Color-matched or upgrade to a new color
✓Restores UV protection and chemical resistance
✓Addresses spider cracks and blistering at the same time
✓Extends pool life by 15–20 years

Get a Gelcoat Assessment

What Is Pool Gel Coat — and Why Does Your San Antonio Fiberglass Pool Need It?

Gel coat is the outermost layer of a fiberglass pool — a resin-based protective finish that provides the pool's color, gloss, chemical resistance, and UV protection. It is what you see, touch, and swim against. When your fiberglass pool looks faded, feels rough, or shows cracks or blisters, it is the gel coat that has degraded — not the structural fiberglass shell beneath it.

San Antonio's climate puts gel coat under conditions that accelerate degradation faster than national averages. The SA pool season runs March through November — eight months of sustained UV exposure at an index regularly exceeding 9 during summer, combined with 220+ sunny days per year that compound oxidation year over year. Edwards Aquifer water at 400+ ppm calcium hardness deposits mineral scale on gel coat surfaces, dulling gloss and creating surface roughness that traps algae and resists cleaning. The Austin Chalk and Eagle Ford Shale geology underlying Bexar County produces seasonal ground movement that stresses pool shells, creating spider cracks at fittings, steps, and floor zones. Left unaddressed, degraded gel coat exposes the structural laminate beneath it to chemical penetration — turning a cosmetic issue into a structural one.

Signs Your San Antonio Pool Needs Gel Coat Repair

→ Faded, chalky, or dull finish — color no longer vibrant
→ Spider cracks on pool floor, walls, or around fittings
→ Osmotic blisters — raised bubbles on the pool surface
→ Rough or sandpaper texture in previously smooth areas
→ Visible delamination — gel coat separating from shell
→ Persistent mineral staining despite correct water chemistry
→ Patchy color inconsistency across pool and spa surfaces
→ Pool is 10+ years old and has never had a gel coat service

Pool Gel Coat Repair Services in San Antonio, TX

Hexagon diagnoses the root cause of every gel coat issue before beginning work — SA's UV intensity, Edwards Aquifer hard water, and Austin Chalk geology each produce distinct failure patterns requiring different repair approaches. All work is color-matched to your existing finish or upgraded to a premium modern color.

Most Comprehensive

Full Gel Coat Restoration

When oxidation, fading, and minor surface damage are widespread across the pool, a full gel coat restoration is the most cost-effective approach. Hexagon mechanically prepares the entire surface, addresses all underlying defects, and applies a fresh, UV-stabilized gel coat layer across the pool and spa as a unified refinish. The result is a pool that looks, feels, and performs as it did when first installed — with a color-matched or upgraded finish that carries UV inhibitors engineered for San Antonio's 220+ sunny-day climate.

✓ Complete pool and spa surface unified under new coat
✓ Mechanically prepared — not chemically stripped
✓ UV inhibitors resist San Antonio's sustained solar load
✓ Choice of color match or premium color upgrade

SA Most Common

Oxidation & UV Fade Repair

Oxidation is the most common gel coat issue on San Antonio fiberglass pools — caused by sustained UV exposure breaking down the resin polymers in the gel coat surface. With 220+ sunny days per year and a UV index regularly reaching 9 or above during the long SA pool season, the finish loses its gloss, turns chalky white or gray, and becomes increasingly porous, holding algae and resisting cleaning. Hexagon's oxidation treatment removes the degraded surface layer, restores chemical resistance and UV protection, and brings the original color back to a like-new standard without shell replacement.

✓ Chalky, dull finish restored — oxidation accelerates in SA's 8-month season under UV index 9+
✓ Porous oxidized layer removed — not polished over
✓ Algae resistance restored — critical across SA's full March–November swim season
✓ Effective on all fiberglass pool colors and ages found in Alamo Heights, Stone Oak, and Castle Hills

Austin Chalk & Eagle Ford Related

Spider Crack Repair

Spider cracks in fiberglass gel coat are a direct consequence of ground movement — and San Antonio's Austin Chalk and Eagle Ford Shale geology produces seasonal soil movement that stresses pool shells more than most Texas regions. Spider cracks typically radiate from stress points: fittings, steps, corners, and floor areas above geological fault zones. Bexar County's shrink-swell clay soils expand during the rainy season and contract in summer drought, cycling stress through the shell year after year. Hexagon repairs spider cracks by grinding out each crack to sound material, filling and laminating the substrate, then applying a color-matched gel coat patch that is invisible under water.

✓ Austin Chalk soil movement identified as root cause
✓ Each crack ground to sound substrate — not filled over
✓ Structural laminate repaired beneath the gel coat
✓ Color-matched finish — invisible under water

Edwards Aquifer Related

Osmotic Blister Repair

Osmotic blistering occurs when water molecules penetrate a compromised gel coat and accumulate between the gel coat and the fiberglass laminate, forming raised bubbles on the pool surface. In San Antonio, the Edwards Aquifer supplies water at 400+ ppm calcium hardness — one of the hardest municipal water supplies in Texas. Calcium-saturated water at low pH accelerates the osmotic process significantly. Hexagon repairs blisters by opening each blister, cleaning the underlying cavity, rebuilding the laminate substrate, and applying gel coat over the repaired area. Edwards Aquifer water chemistry guidance is provided to prevent recurrence.

✓ Every blister opened, cleaned, and rebuilt — not flattened
✓ Underlying laminate damage addressed before gel coat
✓ Edwards Aquifer water chemistry guidance provided
✓ Prevents escalation to full delamination

Why San Antonio Homeowners Should Not Delay Gel Coat Repair

Gel coat issues follow a predictable escalation path. What begins as a cosmetic problem — fading, minor cracking — becomes a structural and financial problem if left unaddressed through another SA pool season.

Cosmetic → Structural

Spider cracks that remain unfilled allow water to penetrate to the fiberglass laminate. Once water reaches the laminate under Bexar County's shrink-swell conditions, hydrostatic pressure cycles cause delamination — separating the gel coat from the shell in sheets. A $400 crack repair becomes a $4,000–$6,000 delamination job within two to three San Antonio seasons.

Pool Season Is 8 Months

San Antonio's pool season runs March through November. Every month a pool sits with oxidized, cracked, or blistered gel coat is a month of accelerated UV and chemical damage to the structural laminate beneath. Addressing gel coat deterioration in the off-season — December through February — protects the full SA season and avoids emergency repairs when temperatures peak in July and August.

Resale & Military Value

San Antonio's JBSA, Fort Sam Houston, and Brook Army Medical Center generate consistent buyer activity from military and medical families, many on PCS timelines with limited inspection windows. A documented, warranted gel coat restoration signals a well-maintained pool to buyers under time pressure — and avoids the price reduction or contingency that a pool in poor visible condition invites.

What to Expect: The Gel Coat Repair Process

Most San Antonio gel coat repair projects complete in 3–5 days. Full restorations on pools with integrated spas typically take 5–7 days. No excavation, no heavy equipment, no disruption to your outdoor living space.

Day 1

Assessment & Drain

Hexagon technician inspects the full pool and spa surface under water and dry conditions. Failure type, extent, and root cause confirmed. Pool drained and surface allowed to dry before work begins.

Days 2–3

Surface Preparation

Defects addressed at substrate level — cracks ground and laminated, blisters opened and rebuilt, oxidized surface mechanically abraded. All preparation work is inspected before gel coat is applied.

Days 3–5

Gel Coat Application

Color-matched or upgraded gel coat applied in controlled layers across all repaired and restoration areas. Spa and pool surface unified under the same finish. Edge-to-edge blending ensures no visible repair lines.

Days 5–7

Cure, Polish & Handover

Gel coat cures under San Antonio ambient conditions. Surface buffed to premium gloss. Full inspection completed. Edwards Aquifer water chemistry guidance provided. Warranty documentation issued at handover.

Restore Your San Antonio Pool to Premium Condition

Hexagon assesses your fiberglass pool's gel coat, identifies every defect, and provides a fixed-price repair quote. Most jobs complete in 3–5 days — no disruption to your property or pool season.

Get Your Free Gel Coat Assessment

Gel Coat Restoration

Color-matched fiberglass refinishing

Structural Repair

Spider crack elimination

Osmotic Blister Repair

Comprehensive surface restoration

Complete Refinishing

Full surface renewal, extended life

3–5 Day Turnaround

Fiberglass Pool Repair

San Antonio's clay soil and hard water create fiberglass-specific challenges that require specialist techniques. Hexagon diagnoses and resolves the root cause — not just the symptom.

✓All repairs color-matched to existing finish
✓Structural repairs address clay soil root cause
✓Most jobs completed in 3–5 days
✓Up to 5-year warranty on structural repair work

Schedule a Repair Assessment

Why Fiberglass Pool Repair in San Antonio Requires a Different Approach

Fiberglass pool repairs are not interchangeable with plaster or concrete repairs — and San Antonio's conditions make the distinction critical. The dominant forces acting on SA pools are Austin Chalk and Eagle Ford Shale geology, which produce shrink-swell clay soils that expand and contract with Bexar County's wet-dry seasonal cycle, and caliche layers — dense calcium carbonate deposits that create uneven pressure points beneath the shell as soil moisture redistributes. SA's thermal range compounds the problem: pool shells that experience 100°F+ summers and periodic winter freezes are under continuous expansion and contraction stress at fittings, steps, and shell seams.

Hexagon's repair process begins with a root-cause assessment, not just a visual surface inspection. We identify whether damage originates from soil movement, caliche pressure, water chemistry, or structural fatigue — and address the underlying cause before applying any surface repair. Every repair is color-matched to your existing gel coat and warranted, so the finished result is invisible underwater and backed in writing.

Pool Problems That Need Immediate Attention

! Visible cracks on pool floor, walls, or around fittings
! Water loss exceeding ¼ inch per day (beyond evaporation)
! Skimmer pulling air — cracked housing or broken neck
! Return fittings loose, leaking, or showing separation
! Step or bench delamination pulling away from shell
! Bowing or bulging in pool walls (caliche or soil pressure)
! Repeated algae bloom despite correct Edwards Aquifer chemistry
! Equipment pad flooding — possible shell or plumbing leak

Pool Repair Services in San Antonio, TX

From hairline gel coat cracks to structural shell repairs and full skimmer replacements, Hexagon handles every repair type found on San Antonio pools — root-cause first, warranty-backed, color-matched to your finish.

Most Requested — Austin Chalk & Eagle Ford

Structural Crack Repair

Structural cracks in fiberglass pools are the direct result of ground movement — and San Antonio's Austin Chalk and Eagle Ford Shale geology produces among the most active shrink-swell clay soils in South Texas. Cracks typically appear on the pool floor above clay expansion zones, around fittings under directional soil pressure, and at corners where shell geometry concentrates stress. Caliche layers beneath the pool create uneven support that concentrates load at specific points as soil moisture changes. Hexagon repairs structural cracks by excavating to the outer shell face where necessary, applying fiberglass laminate to restore structural integrity, and finishing with a color-matched gel coat. The root cause — soil load, caliche pressure, or drainage — is documented and addressed as part of the repair scope.

✓ Austin Chalk + Eagle Ford Shale shrink-swell cycle confirmed as root cause
✓ Laminate repair restores structural shell integrity on caliche-stressed San Antonio shells
✓ Color-matched gel coat — invisible under water
✓ Up to 5-year warranty on all structural crack repairs

SA Most Common

Skimmer Repair & Replacement

Skimmer failure is one of the most common repair calls on San Antonio pools — and one of the most consequential if ignored. The skimmer housing is bonded to the pool shell at the waterline, a location that experiences the highest concentration of thermal cycling, clay movement, and UV exposure. SA's temperature swings from winter freezes to 100°F+ summers create continuous expansion and contraction stress at the skimmer-to-shell bond. Cracks at the skimmer neck or housing allow water to bypass the seal and migrate behind the shell, where it interacts with Austin Chalk clay to create sustained hydrostatic pressure. Hexagon repairs cracked skimmer housings, replaces failed skimmer bodies, reseals skimmer-to-shell bonds, and installs upgraded skimmer units where the original fitting is beyond repair.

✓ Cracked skimmer neck repaired or housing replaced
✓ Skimmer-to-shell bond resealed — caliche thermal contraction and Austin Chalk movement are primary SA failure drivers
✓ Upgraded skimmer units specified for SA's extended 8-month season flow demands
✓ Repair stops Edwards Aquifer mineral infiltration behind the shell face

Water Loss Related

Fitting & Return Line Leak Repair

Return fittings, main drain covers, light housings, and spa jets are all penetration points in the fiberglass shell — and each is a potential leak source as sealants age and clay soil movement applies shear force to bonded fittings. San Antonio's Edwards Aquifer water at 400+ ppm calcium hardness accelerates sealant degradation at penetration points, depositing mineral scale that compromises the seal bond over time. Unexplained water loss is typically traced to one or more fitting penetrations before a shell crack is confirmed. Hexagon performs a systematic pressure test and dye test to locate all active leaks, then repairs or replaces the affected fittings and reseals the shell penetration to current standards.

✓ Systematic pressure and dye test — Edwards Aquifer mineral scale can mask active leaks behind calcium deposits
✓ Fitting replacements address 8-month season sealant degradation from SA's extended pool use cycle
✓ Shell penetrations resealed — Austin Chalk movement shears original sealant bonds at fitting flanges
✓ Water loss confirmed resolved before pool is returned to service

Caliche & Thermal Cycling

Step, Bench & Ledge Repair

Steps, benches, tanning ledges, and spa walls are the structural elements most vulnerable to delamination and cracking on San Antonio pools. Caliche layers create uneven support under horizontal surfaces — steps and ledges — causing separation between fiberglass laminate layers as differential soil settlement loads the shell unevenly. SA's thermal cycling between winter freezes and summer heat amplifies this stress at the bond line between horizontal and vertical shell sections. Pools with tanning ledges and integrated spas have significantly more horizontal surface area exposed to these forces. Hexagon repairs delaminated steps and ledges by re-bonding the separated layers, applying structural reinforcement where needed, and finishing with a color-matched gel coat.

✓ Delaminated layers re-bonded — not patched over
✓ Caliche pressure load assessed and documented
✓ Structural reinforcement applied on high-stress surfaces
✓ Spa, step, and ledge surfaces color-unified on completion

Repair or Replace? Hexagon's Honest Assessment

Not every repair is worth making — and not every damaged pool needs replacing. Hexagon provides an honest structural assessment of every San Antonio pool before quoting, with a clear recommendation based on what actually makes financial sense for the property.

When Repair Is the Right Call

Isolated structural cracks with no shell delamination, single skimmer failure, fitting leaks on an otherwise sound shell, and step or ledge repairs on a pool with good underlying structure are all strong repair candidates. A targeted repair on a sound fiberglass shell typically extends pool life by 10–15 years at a fraction of resurfacing cost — particularly valuable in SA's 8-month pool season where every year of additional service has clear dollar value.

When Resurfacing Makes More Sense

When a pool has multiple simultaneous failure types — cracks, blistering, oxidation, and fitting leaks together — the cumulative repair cost often approaches resurfacing cost. In those cases, Hexagon recommends resurfacing over piecemeal repair: one fixed price, one process, a new surface, and a full warranty rather than multiple partial warranties on individual repairs. For SA pools with recurring crack cycles driven by clay soil, resurfacing with a fiberglass system permanently eliminates the cycle.

When the Shell Needs Replacing

Severe shell delamination, hydrostatic uplift — where the pool shell has floated due to groundwater pressure — or widespread structural failure from sustained caliche and clay loading are cases where repair is not viable. Hexagon will tell you directly when this is the situation — and provide a full replacement or conversion quote rather than charge for repairs that will not hold under San Antonio's soil conditions.

What to Expect: The Pool Repair Process

Most pool repair projects in San Antonio complete in 3–5 days. Structural repairs involving excavation or skimmer replacement may extend to 7 days. No heavy equipment on your lawn — all work performed from pool deck level.

Day 1

Diagnosis & Drain

Root-cause assessment of all damage — pressure test, dye test, visual inspection dry and wet. Austin Chalk soil conditions and caliche load documented. Repair scope confirmed before pool is drained.

Days 2–3

Structural Work

Crack repair, skimmer replacement, fitting resealing, or laminate reinforcement completed at shell level. All structural work inspected and approved before gel coat phase begins.

Days 3–4

Gel Coat Finishing

Color-matched gel coat applied over all repair areas. Blended edge-to-edge for an invisible finish. Skimmer surrounds and fitting flanges refinished to match surrounding surface.

Days 4–5

Refill & Warranty

Pool refilled and Edwards Aquifer water chemistry balanced. All repair work documented. Warranty issued — up to 5 years on structural repairs. Final walkthrough confirms every issue resolved.

Don't Let a Small Repair Become a Costly Replacement

Hexagon assesses your San Antonio pool, identifies every repair need, and gives you an honest recommendation — repair, resurface, or replace. Fixed-price quote, root-cause approach, warranted result.

Get Your Free Pool Repair Assessment

Why San Antonio Pools Benefit from Fiberglass

Traditional Pool Surfaces vs. Fiberglass Performance

San Antonio's unique conditions create challenging environments for traditional pool surfaces, making fiberglass the superior long-term solution.

Hard Water

Edwards Aquifer Minerals

San Antonio's exceptionally hard water contains high mineral concentrations that degrade traditional surfaces year after year.

✓Minerals stain plaster and concrete rapidly
✓Cannot penetrate non-porous fiberglass
✓Eliminates the acid washing cycle entirely
✓Fiberglass cleans easily — no staining

Temperature

Extreme Thermal Cycles

South Texas heat and cold snap cycles create destructive thermal stress that rigid surfaces simply cannot handle.

✓Expansion/contraction cracks plaster and concrete
✓Fiberglass flexes with temperature changes
✓Traditional surfaces deteriorate rapidly
✓Fiberglass maintains integrity year after year

Clay Soil

Expansive Clay Geology

Austin Chalk and Eagle Ford formations shift the ground seasonally — inflexible surfaces fracture under the movement.

✓Ground movement cracks traditional pool surfaces
✓Fiberglass accommodates soil movement without failure
✓Concrete and plaster require constant repairs
✓Minimal impact on properly installed fiberglass

Long Season

March – October Pool Use

San Antonio's extended swimming season means more chemical exposure, more wear — and more savings with fiberglass over time.

✓Extended chemical exposure degrades traditional surfaces
✓Fiberglass maintains integrity under heavy use
✓Plaster and concrete require frequent resurfacing
✓Fiberglass delivers decades of low-maintenance performance

Result: Fiberglass outperforms traditional pool surfaces in every San Antonio-specific challenge — making it the only logical long-term solution.

7–10 Day Process

Our San Antonio Fiberglass Process

From Drain to Swim in Under 2 Weeks

Both HEXConvert™ and Fibre Tech™ follow the same 5-phase installation in San Antonio. No demolition. No surprise delays.

Day 1

Assessment & Drain

— Technician confirms system selection
— Pool drain coordinated on-site
— Water disposal per SA municipal regulations
— HEXConvert™ or Fibre Tech™ confirmed

Days 2–3

Surface Preparation

— Existing surface cleaned, etched, and profiled
— Structural cracks resolved before application
— Optimised for SA hard water and expansive soil

Days 4–6

System Application

— Applied in multiple layers by certified technicians
— Hand-crafted to every contour — walls, floor, steps
— Quality checkpoints throughout

Days 7–8

Cure & Inspection

— Cures under controlled conditions
— SA warm climate accelerates cure time
— Full quality inspection before refill authorized

Days 9–10

Refill & Warranty

— Pool refilled, water chemistry balanced
— Warranty documentation delivered
— HEXConvert™: 10-yr comprehensive — starts day one
— Fibre Tech™: 25-yr material — transferable to next owner

No demolition required · Process continues regardless of SA weather

Schedule Your Assessment

Why Hexagon

Why San Antonio Chooses Hexagon

Fiberglass specialists with proven experience

San Antonio Market Leadership

✓ Successful conversions across all neighborhoods
✓ High customer satisfaction
✓ Strong referral business

Fiberglass Engineering Expertise

✓ Designed for clay soil expansion
✓ Prevents hard water mineral damage
✓ Engineered for thermal extremes
✓ Addresses SA's foundation challenges

Industry Recognition

✓ Texas Pool & Spa Association certified
✓ Certified Pool Operators
✓ $2M liability insurance

Exclusive Fiberglass Technology

✓ HEXConvert™ proprietary to Hexagon
✓ Exclusive Fibre Tech™ materials
✓ Methods developed over 3 decades
✓ Factory direct quality assurance

Our San Antonio Service Area

Proudly serving San Antonio and surrounding areas within a 30-mile radius

972-789-2983

Click to call

San Antonio Neighborhoods We Serve

Specialized expertise across every corner of Greater San Antonio

North

North San Antonio

Alamo Heights Stone Oak Castle Hills Terrell Hills

Specialty Foundation stabilization and drainage solutions

Challenge Limestone bedrock and elevation changes

Northwest

Northwest San Antonio

Medical Center Leon Valley Balcones Heights Hollywood Park

Specialty Equipment upgrades and energy efficiency improvements

Challenge Mixed soil conditions and water pressure variations

Northeast

Northeast San Antonio

Windcrest Converse Live Oak Schertz

Specialty Flexible installation methods and movement accommodation

Challenge Clay soil expansion and foundation movement

South

South San Antonio

Southtown King William Lavaca Blue Star

Specialty Custom fitting and preservation-compliant solutions

Challenge Historic property considerations and space constraints

West

West San Antonio

Westover Hills Culebra Potranco Alamo Ranch

Specialty Early intervention before major damage occurs

Challenge New construction with builder-grade pool surfaces

Service Area

All San Antonio neighborhoods covered

Not sure if you're in our service area? Every San Antonio zip code is covered. Same quality standards, regardless of location.

Confirm Your Coverage

San Antonio Success Stories

Real Results from Your Neighbors

Alamo Heights Transformation

"$40,000 saved versus pool replacement"

"Our 1987 gunite pool was quoted at $47,000 for complete replacement by 3 contractors. Hexagon's conversion cost $18,500 and looks better than new. We chose the HEXConvert™ system with 10-year comprehensive warranty. The smooth surface is amazing after 15 years of rough concrete. Two years later, our chemical costs dropped 60%."

— Michael & Sarah Rodriguez, Alamo Heights

Pool Age: 35 years · Conversion: 2022 · Investment: $18,500

Stone Oak Success

"Solved our recurring crack problem permanently"

"Living on limestone bedrock, our pool cracked every 18 months despite $15,000 in 'permanent' repairs over 8 years. Hexagon's engineering team addressed the root cause with flexible installation. Zero cracks after 3 years, even during the 2023 drought."

— Jennifer Kim, Stone Oak

Pool Age: 12 years · Conversion: 2021 · Investment: $15,000

Medical Center Area

"Professional service exceeded expectations"

"As a cardiologist, I appreciate attention to detail. Hexagon's process was methodical and thorough. They completed our conversion in 6 days despite hard water challenges. The team's knowledge of San Antonio's unique conditions showed in every aspect."

— Dr. Robert Martinez, Medical Center

Investment: $17,200

Southtown Historic District

"Preserved our 1920s pool's character"

"Our historic home's original pool needed careful restoration. Hexagon worked within preservation guidelines while modernizing the surface. The fiberglass maintains the vintage appearance while providing modern performance."

— Amanda & David Chen, King William District

Investment: $18,900

20-Year Cost Comparison

Investment & Savings Analysis

San Antonio pool ownership costs over 20 years

Traditional Path

Resurfacing Cycle · 20 Years

Item	Annual	20-Year
Replastering (every 7 yrs)	$1,300	$26,000
Chemical premium (hard water)	$650	$13,000
Acid washing (every 2 yrs)	$400	$8,000
Spot repairs	$850	$17,000
Water replacement	$250	$5,000
Total Traditional Path	—	$69,000

Hexagon Fiberglass Path

One Conversion · 20 Years

Item	One-Time / Annual	20-Year
Initial conversion	$18,500	$18,500
Maintenance (reduced)	$200/yr	$4,000
Chemicals (up to 45% less)	$357/yr	$7,140
Repairs (within warranty)*	$0	$0
Total Hexagon Path	—	$29,640

* HEXConvert™ covers labor & materials for years 1–10. Fibre Tech™ material warranty covers years 1–25. Post-warranty repair costs will vary.

Potential San Antonio Savings

$39,360

based on a typical $18,500 conversion · Fiberglass pays for itself · Transferable warranty adds resale value

Results will vary based on pool size, usage, and local market conditions. Property value estimates are illustrative only. Consult a licensed real estate professional for advice specific to your property.

60–80%

Returns at resale

18–25%

Fewer days on market

$20k–$45k

Higher sale price

Transferable

Warranty included

Calculate Your Specific Savings

FAQs

Frequently Asked Fiberglass Pool Questions

Fiberglass resurfacing in San Antonio typically ranges from $12,000–$19,000 depending on pool size, condition, and system choice. HEXConvert™ and Fibre Tech™ both offer superior value compared to traditional replastering ($8,000–$12,000 every 5–7 years). Our fiberglass solutions eliminate recurring resurfacing costs, saving significantly over 20 years.

Properly installed fiberglass surfaces last decades. HEXConvert™ includes a 10-year comprehensive warranty covering both materials and labor. Fibre Tech™ provides a 25-year material warranty. Both systems are engineered to perform for the life of your pool when maintained properly, eliminating the traditional 7-year resurfacing cycle.

Yes. Hexagon specializes in fiberglass pool repairs including gel coat restoration, spider crack elimination, and osmotic blister repair. We can restore aging fiberglass pools or repair damage from improper maintenance. Most fiberglass repairs complete within 3–5 days and include warranty protection.

Fiberglass pool repair costs vary by scope. Minor gel coat repairs start around $800–$1,500. Comprehensive restoration ranges $3,000–$8,000. Complete refinishing runs $8,000–$15,000. Many repairs qualify for warranty coverage if we performed the original installation. Contact us for a detailed assessment.

San Antonio's hard water from the Edwards Aquifer contains high mineral concentrations that stain traditional plaster surfaces. Both HEXConvert™ and Fibre Tech™ fiberglass surfaces resist mineral staining and prevent calcium buildup. Our specialized startup procedures optimize water chemistry for local conditions, reducing maintenance requirements.

Yes. Unlike rigid plaster that cracks with soil expansion, both our HEXConvert™ and Fibre Tech™ fiberglass systems accommodate San Antonio's clay soil movement through flexible construction. Our local installations successfully withstand soil challenges, including projects completed during drought and flood cycles.

We maintain positive relationships with San Antonio-area HOAs and provide architectural compliance documentation. Our fiberglass installations meet or exceed aesthetic standards while offering superior performance. Most HOAs appreciate our solutions after seeing neighborhood results.

HEXConvert™ includes 10-year comprehensive coverage (labor and materials). Fibre Tech™ provides 25-year material warranty. Both systems are specifically engineered for South Texas conditions including UV exposure, thermal cycling, and soil movement. Our warranties transfer to new owners — a major selling point in San Antonio's active real estate market.

Yes. We schedule around weather patterns and continue preparation work during rain delays. Our crews understand local weather and plan accordingly. Most projects complete within 7–10 days despite occasional spring storms.

Absolutely. We offer multiple color options for both HEXConvert™ and Fibre Tech™ systems, including traditional plaster blue, modern grays, and custom colors. Many San Antonio clients choose surfaces that complement their limestone, brick, or stucco exteriors. We provide samples for approval before installation.

HEXConvert™ offers comprehensive 10-year labor and material coverage, ideal for homeowners wanting complete protection. Fibre Tech™ provides 25-year material warranty, perfect for long-term planning. Both deliver identical performance and smooth, maintenance-free surfaces. We'll help you choose based on your priorities during your consultation.

LIMITED TIME
San Antonio Fiberglass Special

Save $1,500 on Your Fiberglass Conversion

Book your San Antonio fiberglass assessment before April 15, 2026:

$1,500 OFF any conversion over $15,000

Complimentary comprehensive assessment ($500 value)

0% Financing for 18 months (qualified buyers)

Priority Spring Scheduling — avoid summer wait

Exclusive to San Antonio fiberglass projects. Limited appointments available.

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PERMANENT FIBERGLASS SOLUTIONS

Ready to End the Resurfacing Cycle Forever?

Choose HEXConvert™ (10-year) or Fibre Tech™ (25-year) — both transform your San Antonio pool permanently in 7-10 days

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Hexagon Fiberglass Pools · San Antonio's Fiberglass Pool Specialists · HEXConvert™ & Fibre Tech™ Certified · CPO Certified · $2M Insurance

San Antonio Fiberglass Pool Repair & Resurfacing7-10 Day Install

10 or 25 Yr

7-10 Days

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San Antonio Pool Services

Fiberglass Pool Resurfacing

Fiberglass Pool Conversion

Pool Gelcoat Repair

Fiberglass Pool Repair

Why San Antonio Pools Benefit from Fiberglass

Edwards Aquifer Minerals

Extreme Thermal Cycles

Expansive Clay Geology

March – October Pool Use

Our San Antonio Fiberglass Process

Assessment & Drain

Surface Preparation

System Application

Cure & Inspection

Refill & Warranty

Why San Antonio Chooses Hexagon

San Antonio Market Leadership

Fiberglass Engineering Expertise

Industry Recognition

Exclusive Fiberglass Technology

Our San Antonio Service Area

San Antonio Neighborhoods We Serve

North San Antonio

Northwest San Antonio

Northeast San Antonio

South San Antonio

West San Antonio

All San Antonio neighborhoods covered

San Antonio Success Stories

Investment & Savings Analysis

Frequently Asked Fiberglass Pool Questions

1 What is the average cost of resurfacing?

2 What is the life expectancy of a fiberglass resurfaced pool?

3 Can a fiberglass pool be repaired?

4 How much does it cost to repair a fiberglass pool?

5 How does Hexagon handle San Antonio's hard water?

6 Can fiberglass withstand San Antonio's soil movement?

7 What about HOA approval in neighborhoods like Alamo Heights?

8 How long do you guarantee fiberglass work in our extreme climate?

9 Do you work during San Antonio's unpredictable weather?

10 Can you match our existing pool's appearance?

11 Which fiberglass system should I choose?

Save $1,500 on Your Fiberglass Conversion

Ready to End the Resurfacing Cycle Forever?

San Antonio Fiberglass Pool Repair & Resurfacing
7-10 Day Install