Frequently Asked Questions About Swimming Pool Renovations

Straight Answers Before You Renovate Your Swimming Pool

This guide gives clear, concise answers to the questions Los Angeles pool owners ask us most about concrete pool renovation, interior finishes, water loss, cracks, equipment symptoms, cleaning, coping, shape changes and pool lights. Where a subject has its own detailed guide, you will find the essential answer here and a direct link to the full information.

Call for Pool Advice: (818) 740-6099 · Jump to the FAQ Topics

Third-Generation Concrete Pool Renovation Knowledge

Pool Care LA is a licensed California pool contractor, C-53. The answers on this page are based on the problems we repeatedly uncover while tiling, resurfacing, painting, cleaning and repairing ageing concrete swimming pools. Where a question falls outside our core service, we say so and explain which type of specialist is normally required.

Written and reviewed by our lead tiler, Director of Pool Care LA.

Find Your Question

Browse practical answers across 12 topics. Choose a subject, then open any question.

• Renovation, Cost & Timing
• Choosing a Pool Finish
• Pool Tiling
• Pebble & Resurfacing
• Pool Painting
• Leak Detection & Water Loss
• Cracks, Leaks & Rust
• Equipment & Circulation
• Cleaning, Stains & Calcium
• Coping & Paving
• Steps, Ledges & Shape Changes
• Pool Lights

Quick Pool Interior Comparison

For most existing concrete pools, the practical renovation choices are full tiling, smooth pebble resurfacing or two-pack epoxy pool paint. The best option depends on budget, expected lifespan, surface feel and the condition underneath the old finish.

Longest lasting: Fully Tiled Pool. Often 30 years or more when correctly prepared, installed and maintained. Smooth, easy to clean and repairable in sections.

• Upfront cost — Highest
• Surface feel — Smooth
• Typical care — Lowest surface upkeep
• Best suited to — Premium long-term results

Balanced option: Smooth Pebble Resurfacing. Commonly 15 to 25 years. A durable cement-based interior with a fine, non-slip texture and a lower upfront cost than full tiling.

• Upfront cost — Mid-range
• Surface feel — Fine texture
• Typical care — Moderate
• Best suited to — Durability and value

Lower upfront cost: Epoxy Pool Painting. Up to 7 to 10 years with proper preparation and maintenance. Smooth to touch, although the coating follows the shape and imperfections of the surface underneath.

• Upfront cost — Lowest
• Surface feel — Smooth coating
• Typical care — Regular monitoring
• Best suited to — Suitable sound surfaces

Simple guide: paint keeps the initial cost lowest, smooth pebble balances price and durability, and full tiling generally provides the longest service life and the easiest interior surface to keep clean.

Concrete Pool Renovation Questions

What renovation includes, how long it takes, what it costs and when a repair can remain local instead of becoming a complete renovation.

View Our Los Angeles Pool Renovation Services →

What does a swimming pool renovation include?

A concrete pool renovation can include new tiling, pebble resurfacing, epoxy painting, coping and paving, crack or rust repairs, new fittings, LED lights and design changes such as steps, benches or ledges.

The exact scope depends on the condition of the pool, the finish you want and the budget available. Pool Care LA can handle the work as one coordinated renovation rather than sending the owner to several unrelated trades. View our swimming pool renovation options.

What are the signs that a swimming pool needs renovation?

Common signs include leaks, cracks, rust spots, loose or missing tiles, stained surfaces, rough interiors, flaking paint, hollow render, damaged coping and an outdated design.

A pool that is becoming difficult to clean or keep chemically balanced may also have an interior surface that is deteriorating. Our concrete pool repair guide explains many of the problems we repair.

How long does a pool renovation take?

Most swimming pool renovations take about two to eight weeks. Minor repairs or straightforward painting can be faster, while full retiling, coping, paving and shape changes take longer because of demolition, preparation, curing times and the order in which each trade stage must be completed.

Los Angeles weather, material lead times and problems discovered after the pool is emptied can also affect the schedule.

How much does a pool renovation cost in Los Angeles?

Entry-level concrete pool renovations in Los Angeles commonly begin in the low $20,000 range. Premium renovations with full tiling, new coping, paving and major repairs can exceed $50,000, depending on pool size, materials, access and the condition found beneath the old finish.

A proper quotation needs to separate cosmetic work from repairs that are required for the new finish to last.

Does a swimming pool need to be drained for renovation?

Yes, most pool renovations require the water to be removed. Some local tile, coping or fitting repairs may be possible without fully draining the pool.

Draining a concrete pool must be managed carefully because groundwater pressure can damage an empty pool. Read our hydrostatic valve information page before emptying a pool.

Can a swimming pool be renovated in stages?

Sometimes. Localised tile repairs, coping repairs, light replacements and some concrete repairs can be completed separately. However, work that overlaps is usually better completed together. For example, replacing coping and waterline tiles at the same time can avoid duplicating demolition and preparation.

The best sequence depends on which parts of the pool are failing and which finish will be installed later.

Do you renovate fiberglass swimming pools?

No. Pool Care LA specializes in concrete swimming pools. The tiling, render, paint, crack repair, rust repair and shape-change information on this page is written for concrete pool shells.

Can I get phone advice before asking for a quote?

Yes. Call our lead tiler on (818) 740-6099 for an initial discussion. Photos of the pool, its approximate size, age, current interior finish and the problems you have noticed can help us point you towards cleaning, repair, painting, resurfacing or tiling.

Choosing a Pool Finish: Tile, Pebble or Paint

A practical comparison of lifespan, price level, surface feel, maintenance and the condition each finish needs underneath it.

Compare All Swimming Pool Renovation Options →

Resurfacing vs repainting: which lasts longer?

Pebble resurfacing and full tiling typically outlast pool paint. Painting has a lower upfront cost, but it normally needs to be recoated sooner, particularly where the pool receives strong sunlight or the water chemistry is not well maintained.

For a longer-lasting rendered finish, see pool resurfacing in Los Angeles.

Which swimming pool interior lasts the longest?

A fully tiled pool generally has the longest service life. Correctly installed ceramic or porcelain pool tiles can remain in use for 30 years or more. A quality pebble interior commonly lasts 15 to 25 years, while epoxy paint can last up to 7 to 10 years with proper preparation and maintenance.

Is fully tiling a swimming pool worth the higher cost?

For owners who want the longest-lasting, smoothest and most premium interior, full tiling is often worth the higher upfront cost. Tiles are easier to clean, resist staining and chemicals well, and can be repaired in sections if local damage occurs.

See our fully tiled pool and pool tiling service.

Is pebble resurfacing a good middle option?

Yes. Pebble is a durable cement-based rendered interior that normally costs less than fully tiling the pool and lasts longer than paint. It has more texture than tile or paint, but modern fine-pebble finishes can be much smoother than older pebble finish surfaces.

Is epoxy painting a good pool renovation option?

Yes, when the existing pool and surface are suitable for painting. Epoxy paint is generally the lowest-cost way to renew a concrete pool interior and can create a clean, attractive result.

Paint is a thin coating, so the preparation and the condition underneath it matter. It does not hide every pit, undulation or old repair. Learn more about our Los Angeles pool painting service.

Can an old or stained pool be cleaned instead of renovated?

Sometimes. Calcium, algae, grime and some surface staining may respond to professional cleaning. Cleaning will not repair hollow render, crumbling quartz finish, severe roughness, rusting reinforcement, loose tiles or failing paint.

When the surface is still sound, our one-off pool cleaning and condition report service may save the owner from renovating too early.

How does the interior color affect the final pool water color?

The interior color is only one part of the result. Water depth, sunlight, sky reflection, shade, surrounding paving and landscaping all change how the water looks. Shallow steps and ledges usually appear lighter than the deeper floor.

Use our pool water color guide before choosing a tile, pebble or paint color.

What are the three main interior finish choices for renovating a concrete pool?

For most existing concrete pools, the main choices are a fully tiled interior, smooth pebble resurfacing or two-pack epoxy pool paint.

Full tiling is the premium long-term option. Smooth pebble provides strong durability at a mid-range price. Epoxy painting normally has the lowest upfront cost, but the existing surface needs to be suitable and the coating will need renewing sooner. Compare our concrete pool renovation options.

Which concrete pool finish is easiest to maintain?

A fully tiled pool is generally the easiest interior to keep clean because ceramic and porcelain tiles are smooth, dense and less porous than rendered finishes. Localised damage can also be repaired in sections.

Smooth pebble sits in the middle. Epoxy paint is smooth, but it needs balanced water and regular monitoring so the coating is not prematurely damaged. See our fully tiled pool maintenance guide.

Which pool finish feels smoothest underfoot?

Fully tiled interiors and correctly applied epoxy paint feel the smoothest. Paint, however, follows the texture and shape of the surface underneath it, so an uneven old pool will not become perfectly flat simply because it has been painted.

Modern smooth pebble is much finer than old-style pebble finish, but it still has a gentle non-slip texture rather than the glass-like feel of a tile.

Can a painted or pebble pool be upgraded to a fully tiled pool?

Yes. Painted, pebble, white plaster and quartz finish pools can all be converted to a fully tiled interior. The old finish must first be assessed, and loose, hollow or incompatible material must be removed so the new render and tile system is bonded to a sound base.

The preparation is just as important as the tiles. View our fully tiled pool renovation service.

Swimming Pool Tiling Questions

Answers about waterline tiles, fully tiled pools, tile lifespan, tile failures, ceramic mosaics and our professional view of glass pool tiles.

View Our Swimming Pool Tiling Service →

Are waterline tiles necessary?

Waterline tiles are strongly recommended because they reduce staining where the water level rises and falls and create an edge that is easier to clean. They also give the pool a finished appearance.

The original practical purpose of waterline tiles was to solve the staining and maintenance problem at the water level.

Why do swimming pool tiles fall off?

Common causes include movement in the pool shell, hollow or unstable render, inadequate surface preparation, unsuitable adhesive, missing movement joints and water chemistry that damages grout or adhesive lines.

The loose tile is often the visible symptom. The real cause may be underneath it, which is why pool tile repairs should begin with the substrate.

What are the best tiles for a swimming pool?

Ceramic and porcelain pool mosaics are reliable choices for fully tiled interiors and waterlines. They offer durability, chemical resistance and a wide choice of colors. Slip-resistant options can be used on steps, benches and ledges where extra grip is useful.

How long do swimming pool tiles last?

High-quality ceramic or porcelain pool tiles can last 30 years or more when the concrete, render, preparation, installation materials and water chemistry are right. Many tiled pools remain in service after 40 or 50 years.

It is common for an owner to retile an old fully tiled pool because the color looks dated, not because every tile has failed.

Can old pool tiles be replaced without retiling the whole pool?

Yes. Missing or damaged tiles can often be replaced individually or in sections. Color matching can be difficult on older pools, and a large area of loose tiles may indicate a broader problem with the render or substrate.

Being repairable in sections is one of the major advantages of a tiled pool.

Is swimming pool tiling different from bathroom or house tiling?

Yes. A swimming pool is a concrete structure that holds thousands of gallons of chemically treated water and remains continuously submerged. The tiler must understand concrete, render, cracks, rust, moisture, movement joints, pool fittings, curing and materials designed for immersion.

Pool Care LA prepares, renders and tiles concrete pools as one complete system. See our swimming pool tiling service in Los Angeles.

Are glass pool tiles reliable?

Glass tiles are often marketed as a premium product, but in our practical experience they are more prone to failure than ceramic pool mosaics. Temperature change, pool movement and repeated wet, dry, hot and cold cycles can cause glass tiles to loosen or fall off.

For a more durable result, we normally recommend ceramic pool tiles.

Professional opinion: Others may hold a different view. Our position comes from years of repairing and renovating pools and seeing how different materials perform over time. We have no financial interest in whether a customer chooses glass or ceramic tiles.

Do glass pool tiles fall off more often above the waterline?

Yes, the areas exposed to both water and air are often the most affected. Glass tiles above the waterline and on spa spillways repeatedly become wet and dry while also heating and cooling. Those changes can place extra stress on the installation.

Can steps, benches, spas and water features be tiled?

Yes. Pool steps, seating ledges, benches, spas, spillways and water features can all be tiled. These areas need careful setting-out, edge details and slip considerations so the finish looks deliberate and remains practical to use.

Can a swimming pool be tiled over old paint, pebble or render?

Not safely without proper preparation. New pool tiles should not be bonded directly over loose paint, hollow pebble, weak render or any finish that is already separating from the shell.

The existing surface must be tested and taken back to a stable base. It can then be repaired, rendered and prepared with materials suitable for permanent immersion before tiling begins.

Not sure whether the visible problem is the finish or what sits underneath it? A quick phone conversation and a few clear photos can often stop you from choosing the wrong renovation method.

Call our lead tiler for Pool Advice

Pool Resurfacing, Pebble, white plaster & quartz finish Questions

What resurfacing is, how long pebble lasts, why older interiors become rough and the important difference between a watertight finish and a waterproofing system.

View Our Pool Resurfacing Service →

What is pool resurfacing, and why is it needed?

Pool resurfacing is the process of preparing the old concrete pool interior and applying a new rendered finish. It restores the appearance and usable surface of a pool that has become rough, stained, pitted, cracked or deteriorated.

See our pool resurfacing service in Los Angeles.

How long does a pebble or rendered pool interior last?

A properly installed pebble interior can last about 15 to 25 years. The exact life depends on the product, preparation, water chemistry, maintenance, sunlight and movement in the pool shell.

What is the difference between pebble, white plaster and quartz finish?

Pebble finishes use very small exposed stones mixed into a cement base to create a durable, non-slip interior. white plaster is made from crushed marble and white cement. quartz finish is a marble-based interior with quartz added for color and sparkle.

In our professional experience, pebble is the strongest of the three, white plaster is a close second, and quartz finish is the weakest and the finish we most often see with problems.

Can a white plaster or quartz finish pool be changed to pebble?

Yes. Old white plaster and quartz finish pools can usually be resurfaced with a pebble interior after the existing surface has been properly assessed and prepared. Loose, hollow or failing material must be removed rather than covered.

Is a pebble pool interior waterproof?

No. Once cured, a pebble interior provides a watertight type of surface that helps the pool retain water, but it is not a waterproofing system and it will not completely stop water leaking through a crack, failed fitting or defect in the shell.

The pebble protects the underlying concrete surface from water, pool chemicals and UV exposure. Structural cracks and known leaks still need to be repaired before resurfacing.

Why does a pool surface become rough or sharp?

Rendered pool interiors can become rough as they age, dissolve or become etched by unbalanced water chemistry. Areas close to the waterline can also deteriorate faster because of sunlight and repeated wet and dry exposure.

Once the interior has worn beyond cleaning or local repair, resurfacing is usually the long-term solution.

How do I know when it is time to resurface a pool?

Signs include stains that will not clean off, roughness, sharp areas, pits, holes, circular bulges, calcium spots, long calcium lines, crumbling material, water loss, persistent algae and water chemistry that becomes difficult to keep stable.

One serious symptom may be enough, or several smaller problems may appear together.

Can a small damaged pebble or rendered area be patched?

Sometimes. A local repair may be suitable where the damage is isolated and the surrounding interior is sound. Color and texture matching can be difficult, particularly on an older pool.

When deterioration is widespread, a complete resurface normally gives the more reliable and consistent result.

Will resurfacing fix a leaking swimming pool?

Resurfacing can improve the pool interior and help it retain water, but it should not be treated as a guaranteed repair for an unidentified leak. Plumbing, light conduits, fittings and structural cracks can all leak independently of the interior finish.

The leak should be located and the cause repaired before the new surface is applied.

Is modern smooth pebble actually smooth?

Modern fine-pebble interiors are much smoother than the coarse pebble finish commonly installed decades ago. They have a fine, even texture that provides grip without the harsh, sharp feel associated with some older aggregate finishes.

It is still a textured cement-based surface, not a perfectly flat tile or paint coating. Looking at and touching a real sample is the best way to judge whether the finish suits your family.

Swimming Pool Painting Questions

Pool paint types, expected lifespan, curing time, preparation, peeling and what an epoxy coating can and cannot change about an old surface.

View Our Swimming Pool Painting Service →

Which is the best swimming pool paint?

Epoxy pool paint is the most durable and long-lasting option. Chlorinated rubber and acrylic pool paints are also available, but they generally do not last as long as a properly prepared epoxy system.

For our process and color options, visit pool painting Los Angeles.

How long does swimming pool paint last?

Epoxy pool paint can last up to 7 to 10 years with proper preparation and maintenance. Acrylic or rubber-based paints commonly need recoating after about 2 to 5 years.

Sunlight, water chemistry, curing, the old coating and the condition of the pool surface all affect the lifespan.

Can you paint over old pool paint?

Yes, but only when the existing coating is compatible and remains well bonded. If the old paint type is unknown, a test area may be required. Loose, flaking or incompatible coatings need to be removed or properly prepared before repainting.

How long after painting a pool can it be filled with water?

Most pool paints need a curing period before the pool is filled. Epoxy paint commonly requires 5 to 7 days, while some acrylic products may require about 2 to 3 days. The product instructions and weather conditions must always be followed.

Is pool paint waterproof?

Yes. Once fully cured, pool paint forms a waterproof coating over the pool interior and protects the surface from water, pool chemicals and UV exposure.

A waterproof coating is not the same as repairing a structural crack, failed fitting, light conduit or plumbing leak. Those problems need to be repaired separately before painting.

Does a pool need to be acid washed before painting?

Yes, acid washing is strongly recommended as part of the preparation process. It removes algae, mineral residue and chalky contamination and helps the new coating bond to the prepared surface.

Why does swimming pool paint peel or flake?

The most common cause is water chemistry breaking down the paint film. Other causes include strong UV exposure, filling the pool too soon, moisture in the surface, inadequate preparation and applying a new coating over an incompatible or poorly bonded old coating.

Will painting make an old pool perfectly smooth?

No. Paint is only a thin coating and follows the profile of the surface underneath it. Preparation and repairs can improve pits, flaking, scaling and damaged areas, but old texture, undulations and some imperfections may remain visible.

This is why we explain the likely finish before the work begins rather than promising a result that paint cannot physically create.

Can a pebble or rough rendered pool be painted?

Sometimes, but the surface must be sound and prepared correctly. Loose aggregate, calcium, weak render and contamination need to be removed before an epoxy coating can bond.

Paint will follow the existing texture. If the owner wants a noticeably smoother result, damaged or excessively rough areas may need to be rendered or rebuilt before painting. Our pool painting service includes an assessment of whether painting is technically suitable.

Pool Leak Detection & Water Loss Questions

Quick answers to common signs of water loss. The detailed testing methods and leak-location information remain on our dedicated leak guide.

How can I tell if my pool is leaking or just evaporating?

A simple comparison test can show whether the pool is dropping faster than water exposed to the same weather, but it will not tell you where the leak is. Our swimming pool leak guide explains the bucket and ruler tests, common leak locations and when specialist testing is needed.

Why is the ground around my pool deck or paving soggy?

Persistent wet ground can come from underground plumbing, a leaking pool fitting, irrigation or poor drainage. If it continues through dry weather or changes when the pool equipment runs, arrange professional leak detection and use our leaking pool information page as your starting point.

Why does my pool water level keep stopping at the same height?

The repeated stopping point may be close to the leak, such as a skimmer opening, return fitting, pool light, conduit or crack. It is a useful clue rather than proof, so the exact source should still be tested. See the complete leak detection guide.

Can a skimmer, pool light, conduit or wall fitting leak?

Yes. Leaks can occur through a fitting, around the junction between the fitting and concrete, or along a failed pool-light conduit. The location should be confirmed before anything is sealed or replaced. Our pool leak page explains the most common leak areas.

Can a hydrostatic valve cause a pool to lose water?

Yes. A hydrostatic valve may leak when debris, wear or damage prevents it from sealing correctly. Because the valve also protects an empty concrete pool from groundwater pressure, it should not simply be blocked. Read our hydrostatic valve guide.

What should I do before renovating a pool that may be leaking?

Arrange specialist leak detection and request a written report before the renovation begins. Pool Care LA can repair many confirmed concrete, tile, fitting and structural defects, but we fix leaks rather than locate hidden ones. Start with our leak detection and repair information.

Concrete Pool Cracks, Rust & Structural Repair Questions

The concrete and reinforcement problems that should be assessed before new tiles, pebble or paint are installed over the pool shell.

View Our Concrete Pool Repair Services →

Can cracks in a concrete swimming pool be repaired?

Yes. The repair method depends on whether the crack is limited to the render, passes into the concrete shell, is leaking or is still moving. Repairs may involve opening the crack, stitching, dowelling, reinforcement, injection or rebuilding the affected area.

The new tile, pebble or paint finish should be chosen only after the crack has been assessed.

What causes rust spots inside a concrete swimming pool?

Rust usually appears when steel reinforcement or old wire ties are too close to the surface and begin corroding. Non-stainless screws, fittings, ladders and other metal parts can also create rust stains.

Rust often spreads further beneath the surface than the visible brown, green or black mark suggests.

Can rust be repaired before tiling, resurfacing or painting?

Yes, and it should be. The affected area is opened, loose or rust-damaged concrete is removed, the cause is treated or removed, and the pool surface is rebuilt before the new interior finish is installed.

Read more about our swimming pool rust repair service.

What is a hydrostatic valve in a swimming pool?

A hydrostatic valve is normally located in the deepest part of a concrete pool. It is designed to relieve groundwater pressure beneath the shell when the water inside the pool is low or removed.

Our hydrostatic valve guide explains what it does, where it is located and why it matters during renovation.

Why can draining a concrete pool be risky?

When a pool is full, the water helps balance pressure around the shell. Once emptied, groundwater beneath the pool can push upwards. In extreme cases this can crack, move or lift the pool shell.

A drained pool can also be affected by heat and direct sun, so it should not be left empty without a reason and a plan.

Can loose tiles or coping be repaired without a full renovation?

Yes, when the damage is local and the surrounding material is sound. We repair missing tiles, loose waterline sections, coping stones, fittings and small concrete areas.

If the same failure is appearing throughout the pool, local repairs may only delay the need for broader renovation work.

How is a crack in a concrete pool repaired compared with a fiberglass pool?

A concrete pool crack must first be classified. A shallow crack in render is different from a crack passing through the reinforced shell, and a dry crack is different from one that leaks or continues to move. Concrete repairs can involve opening the defect, stitching, epoxy injection, reinforcement or rebuilding the affected section before the finish is replaced.

A fiberglass pool uses a different laminate and gelcoat repair system and should be assessed by a fiberglass specialist. Pool Care LA specializes in concrete swimming pools.

Are hairline cracks in a concrete pool always structural?

No. Some fine cracks are limited to paint, render or a cement-based interior and may be cosmetic. Others continue through the concrete shell or follow a construction joint, and those can be more serious.

Width alone does not tell the whole story. Movement, water loss, rust, calcium lines and whether the crack returns after repair are all important clues. The finish should be opened or removed where necessary so the actual depth can be assessed.

Can underwater epoxy permanently fix a leaking pool crack?

Underwater epoxy or pool putty can be useful for a small local defect or as a temporary measure, but it should not automatically be treated as a permanent structural repair. If the crack is moving, extends through the shell or is being driven by rust or ground movement, a surface patch may fail again.

The long-term repair must address the cause and the depth of the defect, not only cover the visible line.

Pool Equipment & Circulation Questions

Brief guidance for symptoms that may come from the pump, filter or suction plumbing rather than the concrete pool shell.

Why is my pool pump making a loud grinding or screeching noise?

The cause may be worn motor bearings, debris, a failing seal or a pump struggling for water. Switch it off if the noise is severe, the motor is unusually hot or the pump is running dry, then contact a pool equipment technician.

Why is my pool filter pressure too high?

High pressure commonly means the filter is dirty or water is being restricted after the pump. Follow the instructions for your exact filter and never open a filter while it is pressurised. If cleaning or backwashing does not correct it, use a pool equipment technician.

Why are air bubbles coming out of my pool return jets?

Persistent bubbles usually mean air is entering the suction side through low water, a pump-lid seal, valve, cleaner hose or suction plumbing. If the pump also loses prime, arrange equipment or plumbing diagnosis. Our pool parts glossary can help identify the fittings involved.

Does Pool Care LA repair pool pumps and filters?

No. Our core work is the concrete pool shell, interiors, coping, fittings, lights, conduits and renovation-related repairs. Internal pump, filter and chlorinator servicing should be completed by a pool equipment technician.

Pool Cleaning, Stains, Algae & Calcium Questions

Quick answers to help distinguish a cleanable surface problem from an interior that is worn and ready for repair or renovation.

Can calcium scale be removed without resurfacing the pool?

Often, yes, when the tile, grout or rendered surface beneath the scale is still sound. The safe method depends on the pool interior, so aggressive cleaning should not be used blindly. See our pool cleaning and calcium-removal service.

Why is there a white calcium line around the pool waterline?

Evaporation can leave minerals behind where the water level rises and falls. Water chemistry affects how quickly the line builds, while missing grout or moisture movement can create similar deposits. Our cleaning page shows what professional removal can achieve.

Why does algae keep returning after the pool water has been cleaned?

Recurring algae can come from water balance, filtration or circulation, but it can also hold inside a rough or deteriorating pool interior. A maintenance provider should first check the water and equipment; if the same areas keep returning, the surface may need cleaning, repair or resurfacing.

Is acid washing suitable for every swimming pool interior?

No. Tile, epoxy paint and cement-based interiors react differently, and acid can damage a surface that is already thin or deteriorating. The interior should be identified and assessed before the cleaning method is chosen.

Does Pool Care LA provide pool cleaning and condition reports?

Yes. We provide one-off deep cleaning for neglected or heavily stained pools and can combine it with tile repairs, calcium removal or a pool-condition report. We do not provide weekly chemical treatment or recurring pool maintenance. See the complete pool cleaning service page.

Swimming Pool Coping & Paving Questions

What coping does, why it comes loose, how it differs from paving and the factors that control replacement cost.

View Our Swimming Pool Coping Service →

What is swimming pool coping?

Pool coping is the finished edge that sits on top of the pool shell between the water and the surrounding paving. It protects the top of the shell, gives swimmers a safe edge and creates the visual border around the pool.

Simply, it is the edge people sit on with their legs in the water. See our pool coping replacement service.

Is pool coping necessary?

Yes. Coping covers and protects the top of the concrete shell, provides a usable edge for entering and leaving the pool and helps direct water away from the pool structure.

How often should pool coping be replaced?

Pool coping commonly lasts about 10 to 20 years, depending on the stone, installation, movement and maintenance. Cracked stones, loose edges, hollow areas, failed mortar and falling waterline tiles are signs that replacement may be needed.

Can new coping be installed over old coping?

No. Old coping should normally be removed so the bond beam can be inspected and the new stone can be fixed to a properly prepared base. Installing new coping over loose or ageing coping can carry the old failure into the new work.

The main exception is some rendered pebble finish coping, where a different preparation method may be possible.

What is the difference between pool coping and pool paving?

Coping is the stone or tile directly on the pool edge. Paving is the larger surrounding entertainment and walking area. Coping is connected to the pool shell, while the surrounding paving may move differently.

There should almost always be an expansion joint between the coping and paving.

Why is professional pool coping installation important?

Poor installation can lead to hollow stones, shifting edges, cracking, failed grout, damaged waterline tiles and possible leak pathways. An experienced pool renovator understands the bond beam, pool movement, overhang, falls, joints and how the coping connects to the waterline.

How much does swimming pool coping cost?

A mid-range coping replacement commonly costs around $10,000 per pool, including stone supply. Los Angeles pricing can start at about $150 per lineal foot for basic concrete or reconstituted stone and exceed $400 per lineal foot for premium options such as bluestone or travertine.

Pool shape, demolition, preparation, access and custom cutting affect the final price. Creating a bullnose edge can add about $25 per foot. Rectangular pools are generally cheaper than freeform or kidney-shaped pools, and many installers apply a minimum charge based on about 26 lineal feet.

Can coping stone be custom cut for a curved or freeform pool?

Yes. Coping can be shaped and cut on site to suit curves, corners, spillways and unusual pool outlines. Custom cutting takes more labor and stone than a simple rectangular layout, which is why freeform pools normally cost more.

Why do loose coping stones and falling waterline tiles often appear together?

Coping and the top row of tiles meet at the bond beam, so movement or failing mortar at the pool edge can affect both. As old coping loosens, water can enter the joint and the movement can transfer into the waterline tiles beneath it.

Replacing only the fallen tiles may not last if the coping above them remains hollow or unstable. Both areas should be tested before the repair scope is decided.

Pool Shape Changes, Steps, Ledges & Seating Questions

How an older concrete pool can be made more useful with new steps, benches, ledges, shallower areas and coordinated finish upgrades.

View Pool Steps, Ledges & Shape Changes →

Can the shape of an existing concrete swimming pool be changed?

Yes. A concrete pool can be remodelled by adding or removing internal features, changing parts of the wall, reducing depth or altering the usable swimming area. The new work must be designed and tied into the existing shell rather than treated as a cosmetic addition.

View our concrete pool shape-change service.

Can steps, a bench, seating ledge or beach area be added?

Yes. We add steps, benches, seating ledges, sun shelves, beach-style entries and other practical features to existing concrete pools. The design should consider how people will enter, sit, swim and move around the pool, not only how the new feature looks.

Do new steps or ledges mean the whole pool must be tiled?

No. New areas can be tiled while the remaining pool is painted or resurfaced with pebble. The important issue is how the new concrete connects to the old shell and how the different finishes meet.

Every junction is a potential movement zone, so the final finish plan should be decided before the concrete work begins.

Can a concrete pool be made smaller or shallower?

Yes, within structural limits. It should not be done by simply dumping excessive concrete into the pool. Size and depth changes require properly designed reinforced construction tied into the existing shell so the added weight and new joints do not create avoidable cracking.

Why are joints between old and new concrete important?

Old and new concrete can shrink, expand and move differently. If the junction is not reinforced and detailed properly, movement may appear later through tile, pebble or paint.

The repair, reinforcement, render and final interior all need to be planned as one system.

Can coping, waterline tiles, lights and the interior be upgraded at the same time?

Yes, and a major renovation is often the best time to coordinate them. Completing related work together can improve the final design and avoid reopening newly finished areas later for conduits, fittings, coping or tile preparation.

Swimming Pool Light Questions

LED light lifespan, replacement without draining, transformers, light quantities, costs and the best time to install a new conduit.

View Our LED Swimming Pool Light Service →

Are LED swimming pool lights worth it?

Yes. LED pool lights can use up to 80% less electricity than halogen lights, last 5 to 7 times longer and provide color and control options that older lights cannot.

See our LED pool light installation and replacement service.

Can pool lights be changed without draining the pool?

Yes. Most replacement pool lights are designed so the fitting can be brought above the waterline and changed without emptying the swimming pool. The existing cable, niche and conduit still need to be checked.

How many lights does a swimming pool need?

The number depends on pool length, width, depth, shape, wall color and where the light can be positioned. A standard residential pool often needs two LED lights for even coverage, while a larger pool may need four or more.

Does a swimming pool light need a transformer?

Yes, most pool lights use a transformer to reduce standard household power to a safer low voltage, commonly 12V or 24V. The transformer, cable and protective electrical equipment must suit the light system being installed.

How much does it cost to install pool lights?

Professional pool light installation in Los Angeles commonly ranges from about $800 to $1,500 per light, including labor and fittings. The cost changes if the conduit, cable, transformer, niche or surrounding concrete also needs work.

Who can install or replace swimming pool lights?

Fixed electrical work, transformers, hard-wired connections and changes to electrical circuits must be completed by a licensed electrician. Some purpose-built low-voltage replacement fittings are designed for straightforward in-pool replacement, but the existing system and the manufacturer’s instructions must be checked first.

When there is any doubt about the wiring, transformer or safety of the system, use a licensed electrician.

Can a new pool light conduit be installed during renovation?

Yes. A major renovation is the right time to replace a failed conduit, move a light or add a new light position because the pool is already empty and the wall can be repaired before the new finish is installed.

The conduit and pool-side preparation can be coordinated with the renovation, while the electrical connection is completed by the appropriate licensed electrician.

Can old halogen pool lights be upgraded to LED?

Usually, yes. Many older halogen installations can be converted with a compatible surface-mounted or retrofit LED light, often using the existing conduit when it remains serviceable.

The old niche, cable, voltage and transformer must be identified first. Some older systems require an electrician to disconnect or replace hard-wired equipment. See our LED pool light upgrade service.

Why is my LED pool light flickering, dim or out of sync?

The cause may be the light itself, a poor connection, voltage drop, water inside a fitting, a failing transformer or a controller that is not synchronising multiple lights correctly.

Do not assume that replacing the lamp alone will solve it. The light model, transformer, cable and controls should be checked as one system, particularly when more than one light is affected.

Do all replacement pool lights fit an old niche and conduit?

No. Pool lights differ in diameter, mounting style, cable requirements, voltage and how they seal against the pool wall. Retrofit models can solve many older installations, but the existing niche and conduit still need to be measured and inspected.

During a renovation, an unsuitable or failed conduit can sometimes be replaced and the wall repaired before the new interior is installed.

Why does my pool light trip the breaker or safety switch?

A tripping circuit can indicate water entry, damaged insulation, a failed transformer, a cable fault or another electrical problem. Leave the light switched off and do not repeatedly reset the protection device to force it to run.

Electrical testing and hard-wired repairs must be completed by a licensed electrician. Our pool electrical services guide explains where an electrician is required and how the work can be coordinated with a renovation.