If your shower is starting to look tired, the grout is changing colour, or you have noticed water appearing where it should not, you may be wondering whether you need your shower regrouted or resealed. These are two of the most common services used to restore leaking showers, but they are not the same thing and each addresses a different part of the bathroom.

Knowing the difference between regrouting and resealing can help you understand what may be happening in your shower and what sort of work might be required. It can also save you from spending money on the wrong repair or assuming that a simple clean will solve a problem that has actually been developing for some time.

What Is Shower Regrouting?

Grout is the material that fills the joints between your tiles. In a shower, it is constantly exposed to water, moisture, cleaning products and everyday wear, so over time it can become stained, cracked, porous, loose or generally deteriorated.

Shower regrouting involves removing the old, damaged grout and replacing it with new grout. When the work is carried out properly, it can make a significant difference to both the appearance and condition of the shower, particularly where the existing grout has deteriorated after years of use.

Regrouting is not simply a matter of putting new material over the top of the old grout. The existing grout needs to be removed to an appropriate depth, the joints need to be properly prepared and the new grout needs to be installed correctly to achieve a durable, clean finish.

What Is Shower Resealing?

Resealing generally refers to replacing the flexible sealant, most commonly silicone, used around areas such as shower corners, wall-to-floor junctions, shower screens, baths and other changes of direction.

Silicone performs a different job to grout. It is flexible, which allows it to accommodate the small amounts of movement that can occur where different surfaces meet. Over time, however, silicone can shrink, crack, become mouldy or pull away from the surface, leaving gaps where water can potentially get through.

A proper shower sealing job involves removing the old silicone, preparing the surfaces and installing a new seal. Simply applying fresh silicone over old, deteriorated silicone is generally not the best approach and can result in an untidy finish that does not provide the long-term protection you are looking for.

Grout And Silicone Do Different Jobs

One of the easiest ways to understand the difference between regrouting and resealing is to look at where each material is used. Grout is generally found between individual tiles, while silicone is used at junctions and other areas where flexibility is required.

The two materials should not be considered interchangeable. Replacing deteriorated grout will not repair a failed silicone joint, just as replacing silicone will not restore grout that has cracked, crumbled or become porous.

This is why a shower can sometimes require both regrouting and resealing. If the shower is several years old and both the grout and silicone are showing signs of deterioration, addressing the whole shower rather than one isolated area can often produce a much better result.

When Does A Shower Need Regrouting?

There are several signs that your shower grout may have reached the end of its useful life. Cracked, crumbling or missing grout is an obvious warning sign, but you may also notice permanent discolouration, staining or areas where the grout appears to be breaking away from the edges of the tiles.

Sometimes the problem is less obvious. Grout can gradually become porous and deteriorated without looking dramatically damaged, particularly in a shower that has been used every day for many years.

If cleaning no longer seems to restore the grout, or you are repeatedly dealing with mould and discolouration, it may be worth having the shower assessed. Persistent problems can indicate that the grout itself has deteriorated rather than simply becoming dirty.

When Does A Shower Need Resealing?

Silicone tends to show different signs of deterioration. You may notice cracks along the seal, gaps between the silicone and tiles, shrinking or areas where the seal has visibly pulled away from the surface.

Mould is another common reason homeowners investigate resealing. Some surface mould can be removed with cleaning, but silicone that has become heavily affected, cracked or deteriorated may need to be completely removed and replaced.

Pay particular attention to the corners of the shower and the areas around the shower screen. These are common locations for failed silicone because they are exposed to constant water and movement.

Can You Need Both Regrouting And Resealing?

Yes, and this is actually quite common with older showers. The grout and silicone are both exposed to the same wet environment, so if one has deteriorated significantly, there is a good chance other areas of the shower are showing their age as well.

For example, you might have cracked grout between the wall tiles while the silicone in the corners has also started to shrink or separate. Replacing only the grout would leave the failed silicone in place, while replacing only the silicone would leave the deteriorated grout untouched.

This is why it is generally better to assess the condition of the entire shower rather than focusing on the most obvious problem. An experienced regrouting professional can look at the grout, silicone, tiles and junctions together before recommending the appropriate work.

Can Regrouting Fix A Leaking Shower?

This is where things can become a little more complicated. While deteriorated grout and failed silicone can contribute to water escaping from a shower, not every leaking shower can be fixed simply by replacing the grout or silicone.

There can be several reasons for a shower leak, including failed seals, deteriorated grout, movement, damaged waterproofing or plumbing problems. The visible leak is not always a direct indication of where the water is actually entering the surrounding structure.

For this reason, an experienced contractor should assess the shower before recommending a solution. In some situations, regrouting and resealing may be all that is required, while other showers may have an underlying waterproofing issue that needs further investigation.

What Happens When Shower Grout Deteriorates?

A shower is exposed to a considerable amount of water over its lifetime. Every shower, regardless of how well it was originally constructed, will eventually experience some degree of wear to its grout and seals.

As grout cracks, crumbles or becomes porous, water can potentially move into areas that were not intended to remain wet. This does not mean that every cracked grout line is evidence of a serious waterproofing failure, but it is certainly a reason to have the shower looked at.

The earlier deterioration is identified, the easier it can be to determine what is happening and what work may be appropriate. Waiting until there is obvious water damage can make an otherwise straightforward shower repair considerably more complicated.

Can You Just Clean The Grout?

Cleaning can make a considerable difference when the problem is simply surface dirt or staining. Good bathroom maintenance is important, and regular cleaning can help keep grout and tiles looking better for longer.

However, cleaning cannot repair grout that has physically deteriorated. If the grout is cracked, loose, missing or breaking down, no amount of scrubbing will restore it to its original condition.

This is one reason homeowners sometimes become frustrated with an older shower. They can spend considerable time cleaning the grout, only to find that it quickly becomes stained again or continues to look damaged because the underlying issue is the condition of the grout itself.

Can Regrouting Make An Old Bathroom Look New?

One of the major benefits of professional regrouting is the difference it can make to the appearance of a bathroom. Old, stained or discoloured grout can make perfectly good tiles look tired and dated, even when the tiles themselves are still in excellent condition.

Fresh grout creates cleaner, more defined lines between the tiles and can give the entire shower a much fresher appearance. When the silicone is also replaced and the surrounding surfaces are properly cleaned, the transformation can be surprisingly significant.

For homeowners who are not looking to undertake a complete bathroom renovation, professional regrouting and resealing can be a practical way to restore an older shower without replacing perfectly serviceable tiles.

Is Regrouting Better Than Replacing The Tiles?

It depends on the condition of the bathroom, but replacing the tiles is not always necessary simply because the grout has deteriorated. If the tiles are sound and the underlying shower is otherwise in good condition, regrouting may provide a much more practical solution.

Removing and replacing tiles can be a major undertaking. It can involve demolition, disposal, new tiles, additional labour and potentially further work to the waterproofing system.

Professional regrouting allows the existing tiled surface to remain in place while addressing deteriorated grout. Of course, if tiles are loose, badly damaged or there are significant underlying problems, a different approach may be necessary.

Why Does The Choice Of Grout Matter?

Not all grout products are the same, and the choice of grout is particularly important in wet areas such as showers. The product needs to be suitable for the environment and capable of handling the demands of regular exposure to water and cleaning.

At Alpha Sealed WA, epoxy grout is used for shower regrouting projects. Epoxy grout offers excellent resistance to water and staining and is well suited to the demanding conditions found in bathrooms and showers.

However, the product is only part of the equation. Proper preparation, careful removal of the old grout and correct installation all have a major impact on the quality and longevity of the finished job.

Don’t Wait Until The Shower Is Obviously Leaking

One of the biggest mistakes homeowners can make is waiting until a shower is visibly leaking before dealing with deteriorating grout and silicone. By the time water damage becomes obvious, moisture may have been getting into surrounding areas for some time.

That does not mean every ageing shower needs to be repaired immediately or that every crack indicates a major problem. It simply means that addressing deterioration early can make it easier to identify the cause and deal with the issue before further damage occurs.

If your shower is starting to show signs of wear, it is worth getting professional advice rather than waiting for the problem to become more obvious.

What Should You Do If You’re Unsure?

If you have noticed cracked grout, mouldy silicone, staining or signs of water escaping from your shower, do not automatically assume that the entire bathroom needs to be replaced. In many cases, the tiles may still be perfectly serviceable and the problem may be addressed through professional regrouting, resealing or a combination of both.

The important thing is understanding what is actually causing the problem before deciding on the solution. An experienced professional can assess the condition of the shower and help determine whether the issue is primarily related to grout, silicone or something that requires further investigation.

Why Choose Alpha Sealed WA?

Alpha Sealed WA has built an outstanding reputation across Perth, backed by a 5-star rating from more than 580 Google reviews. With 40+ years of combined experience, a commitment to guaranteed high standards and the use of epoxy grout, the team understands what it takes to deliver quality shower and bathroom repairs that not only perform well but leave your shower and bathroom looking like new.

If there’s one thing I’ve learned after years of inspecting leaking showers across Perth, it’s that very few homeowners call us when the problem first starts. Most people notice something isn’t quite right, but because the shower is still usable and there’s no obvious flood on the bathroom floor, they put it in the “I’ll get around to it later” basket.

It usually starts with something small. Perhaps the silicone in the corners has gone mouldy and no amount of cleaning seems to bring it back. Maybe the grout is beginning to crack, or there’s a faint musty smell that appears every time the bathroom is closed up for a few hours. Sometimes it’s bubbling paint on the wall outside the shower, or a water stain that has appeared on the ceiling below an upstairs bathroom.

The problem is that a leaking shower rarely stays the same. In almost every case, the damage slowly becomes worse over time. Water continues finding its way behind the tiles, soaking into areas you can’t see, and causing deterioration that often goes unnoticed until the repair bill becomes much larger than it needed to be.

The good news is that many leaking showers can be repaired before they reach that stage. The bad news is that the longer you leave the problem, the greater the chance that what could have been a relatively straightforward repair turns into a complete shower rebuild.

The Warning Signs Are Usually There Long Before Major Damage Appears

Many homeowners assume they would immediately know if their shower was leaking. The reality is that most leaking showers develop gradually and give plenty of warning signs before serious damage becomes obvious.

One of the most common things we see is mouldy or deteriorating silicone around the base of the shower or in the corners where the walls meet. People often replace the silicone themselves or repeatedly clean it, only to find the mould returns a few weeks later. While mouldy silicone doesn’t automatically mean the shower is leaking, it can be one of the first signs that excessive moisture is present.

Cracked grout is another common warning sign. Over time, standard cement grout can deteriorate, develop hairline cracks, and begin allowing water to penetrate behind the tiled surface. Many people assume grout is purely decorative, but it actually plays an important role in protecting the areas behind the tiles.

Loose tiles are another red flag that shouldn’t be ignored. When moisture gets behind the tiles for extended periods, it can weaken the adhesive holding them in place. What starts as a slightly hollow sounding tile can eventually become tiles lifting from the wall or floor.

Then there are the signs that appear outside the shower itself. Bubbling paint, swollen skirting boards, watermarks on nearby walls, and stains on ceilings below upstairs bathrooms are all indicators that water may already be escaping beyond the shower enclosure.

Perhaps the most overlooked sign of all is the smell. Many homeowners describe a persistent damp or musty odour that seems impossible to eliminate no matter how thoroughly they clean the bathroom. In many cases, that smell is being caused by moisture trapped behind the tiles or inside surrounding wall cavities.

Why Leaking Showers Rarely Fix Themselves

One of the biggest mistakes people make is assuming that because the problem hasn’t become dramatically worse, it can wait a few more months.

Unfortunately, water doesn’t work that way.

Every time the shower is used, moisture has another opportunity to travel through damaged grout lines, failed silicone joints, gaps around fixtures, or compromised waterproofing systems. Even if the amount of water escaping seems minor, those small amounts accumulate day after day, week after week, and month after month.

I’ve inspected showers where homeowners thought the leak had only recently started, only to discover evidence suggesting moisture had been entering surrounding building materials for years. The damage often remains hidden until it reaches a point where visible symptoms finally begin appearing.

The challenge is that once water gets behind the tiles, it doesn’t simply sit in one location. It follows the path of least resistance, moving through walls, beneath flooring, and into adjacent areas of the home. That’s why the source of the problem and the visible damage aren’t always in the same place.

The Difference Between a Repair and a Full Retile

This is where delaying repairs can become expensive.

Many leaking showers can be successfully repaired without removing tiles if the problem is identified early enough. Professional tile regrouting, replacing failed silicone, repairing damaged grout lines, and applying appropriate sealing systems can often stop water ingress and restore the shower’s integrity.

Compared to a complete bathroom retile, these repairs are relatively affordable and cause minimal disruption to the household.

However, when leaks are left unattended for extended periods, the situation can change dramatically.

As water continues penetrating behind the tiled surface, it may begin damaging wall linings, render, adhesives, flooring materials, and even structural components. Once those materials deteriorate beyond a certain point, repairing the grout and silicone alone is no longer enough.

Instead of repairing the shower, you’re now rebuilding it.

That’s often the point where homeowners tell us they wish they had acted sooner.

What Is Actually Involved in a Full Retile?

Many people don’t realise how much work is involved once a shower reaches the point where a complete retile is necessary.

The first stage is usually demolition. Existing tiles need to be removed to expose the damaged surfaces underneath. Depending on the extent of the moisture damage, wall sheeting, render, flooring, or other substrates may also need replacing.

Once the damaged materials have been removed, preparation work begins. Walls may need re-rendering or repair before waterproofing can take place. This alone is a specialised trade and adds another stage to the project.

The next step is waterproofing. Modern waterproofing systems are critical to the long-term performance of any shower and must be applied correctly. They also require curing time before further work can proceed.

In most shower rebuilds, a new screed is then required. The screed forms the shower floor and creates the correct falls towards the drain, ensuring water flows away efficiently rather than pooling on the surface. A poorly constructed screed can lead to drainage issues, making this a crucial stage of the rebuild process.

Many older showers also require drainage upgrades during the rebuild process. This may involve installing puddle flanges and ensuring the shower complies with current standards and best practices.

Only after these stages are complete can the tiling begin. New wall and floor tiles need to be installed, aligned, cut, and finished correctly. Once the tiles have cured, they then need to be grouted and sealed.

Finally, the shower screen often needs attention. In some cases it can be removed and reinstalled. In many situations, however, the existing screen is damaged during removal or is no longer suitable for the rebuilt shower. This means replacement becomes necessary.

Suddenly, a leaking shower that may have originally required a regrout and reseal has turned into a major construction project.

Why The Costs Escalate So Quickly

One reason shower rebuilds become expensive is the number of trades involved. Each trade attends site separately. Each trade charges separately. Each stage often needs to be completed before the next can begin.

The project can stretch over multiple days or even weeks depending on scheduling and curing times. Materials, labour, waste removal, and replacement fixtures all contribute to the final cost.

This is why acting early is often the most cost-effective decision a homeowner can make.

A Repaired Shower Can Look Almost New Again

One of the things homeowners often comment on after a leaking shower repair is how much better the bathroom looks.

Over time, stained grout, mouldy silicone, and deteriorating joints can make even an otherwise modern bathroom look tired and neglected. Once those areas are professionally restored, the transformation can be remarkable.

Fresh epoxy grout, clean silicone lines, and properly repaired joints can dramatically improve the overall appearance of the shower. Many customers tell us it feels like they’ve had a bathroom makeover without the cost and disruption of a full renovation.

The practical benefits are important, but there’s also something satisfying about knowing the shower looks great and is properly protected against future water damage.

A leaking shower repair may require one specialist team. A full rebuild can involve demolition contractors, waterproofers, tilers, plumbers, glaziers, renderers, painters, and other trades depending on the extent of the damage.

Why A Free Inspection Makes Sense

The reality is that most homeowners already have a feeling something isn’t right before they contact us.

They’ve noticed the mould that keeps returning. They’ve seen the bubbling paint. They’ve spotted cracked grout lines or started smelling that damp odour every time they walk into the bathroom.

The question isn’t whether the problem will disappear. The question is whether it’s addressed before additional damage occurs.

A professional inspection can determine exactly what’s causing the issue and whether a repair is still possible. In many cases, identifying the problem early can save thousands of dollars compared to leaving it for another year or two.

When the inspection is free, there’s very little reason to wait.

Get Honest Advice Before The Problem Gets Worse

If you’ve noticed mouldy silicone, recurring mildew, cracked grout, loose tiles, bubbling paint, watermarks, or unexplained damp smells around your bathroom, now is the ideal time to have the shower inspected.

Alpha Sealed WA has built a reputation as one of Perth’s leading leaking shower repair specialists, with more than 530 Google reviews and a five-star rating. As epoxy grout specialists, the team approaches every inspection as experienced tradespeople rather than salespeople, providing honest advice, genuine recommendations, and realistic repair options. 

With free inspections available, it’s an easy way to understand exactly what’s happening before a minor issue turns into a major and expensive renovation.