If the silicone around your shower is mouldy, peeling or letting water through, the first question most homeowners ask is simple: how much will it cost to fix? The good news is that a professional shower reseal is one of the most affordable bathroom repairs you can book, and it often prevents the far more expensive jobs that follow a hidden leak.
In this guide we round up what Melbourne homeowners can expect to pay for shower resealing and bathroom caulking in 2026, the 7 factors that push the price up or down, and how resealing compares with regrouting so you only pay for the job you actually need.
Quick answer: A professional single shower reseal with Professional Caulking Group starts from $250, including removal of the old silicone, surface preparation and a mould-resistant sealant. A double shower starts from $350, a single bath from $200 and a full bathroom reseal from $400.
Bathroom Resealing Prices at a Glance (2026)
| Job | Starting price | What is included |
|---|---|---|
| Single shower reseal | From $250 | Removal of old silicone, surface preparation and mould-resistant sealant |
| Double shower reseal | From $350 | Two shower recesses with the same full strip, clean and reseal process |
| Bath caulking (single bath) | From $200 | Bath perimeter and the joints where the bath meets the tiles |
| Vanity caulking (single vanity) | From $150 | Vanity top, splashback and wall joints |
| New bathroom caulking (new build or renovation) | From $300 | Full caulking of tiles, vanity, bath and fixtures |
| Full bathroom reseal | From $400 | Shower, bath, vanity, tiles, edges and all internal joints |
All prices are starting rates and can vary with site conditions and access. See our full caulking price list for kitchens, windows, balconies and whole-home packages.
Which Option Is Best Value? Our Quick Roundup
- Best for one mouldy or peeling shower: the single shower reseal (from $250). It fixes the most common problem without paying for areas that are still sound.
- Best for homes with a main bathroom and an ensuite: the double shower reseal (from $350), which costs less than booking two showers separately.
- Best value when more than the shower has failed: the full bathroom reseal (from $400). Booking a shower, bath and vanity separately starts at $600, so bundling them saves at least $200.
- Best for renovations and new builds: new bathroom caulking (from $300), ideal before handover or once the tiler has finished. Our new home handover checklist explains what to look for.
- Best for whole-home maintenance: full house caulking (from $900), covering wet areas, windows and internal joints in one visit.
7 Factors That Affect the Cost of Shower Resealing
Every shower is different. These are the seven things that have the biggest impact on what you will pay.
1. The Size and Layout of Your Shower
Resealing is priced largely on the length of joint that needs to be stripped and resealed. A compact corner shower has far fewer metres of silicone than a large walk-in shower with a long screen, a hob, a niche and multiple wall junctions. More joints means more time, so the price rises with the size of the enclosure.
2. How Hard the Old Silicone Is to Remove
New silicone will not bond to old silicone, so every trace of the old bead has to come out. Showers that have been patched with layer upon layer of DIY silicone, or sealed with the wrong product, take noticeably longer to strip and clean back to a sound surface.
3. Mould Behind the Old Seal
Black mould on the surface is easy to see, but it often spreads into the gap behind the silicone. That area needs to be treated and fully dried before resealing, otherwise the mould comes straight back. Heavy mould adds preparation time, which is why we always use a mould-resistant sanitary sealant.
4. Glass Screens and Frameless Panels
Frameless and semi-frameless screens need careful work along the glass channels and fixings. These joints are highly visible, so a clean, straight finish matters, and the extra precision can add to the job.
5. The Type of Shower Base and Tiles
Acrylic trays, tiled hobless floors and natural stone all behave differently. Natural stone such as marble needs a stone-safe neutral-cure silicone, and hobless showers often have longer floor joints. The right product for your surface protects both the finish and the seal.
6. Colour Matching and Specialty Sealants
White and clear silicone suit most bathrooms, but if you have grey, black or coloured grout you may want the silicone colour matched for a seamless look. Colour matching is available as an optional add-on.
7. Access and Urgency
Apartments with limited parking, tight bathrooms and jobs that need to be done the same day can all affect the final price. Urgent and same-day service is available, and an additional fee may apply. Booking several areas in the same visit is the easiest way to get more value from the call-out.
Shower Resealing vs Regrouting: Which Do You Actually Need?
Resealing and regrouting are often confused, but they fix different parts of your shower. Knowing the difference can save you from paying for a bigger job than you need.
| Resealing (silicone) | Regrouting | |
|---|---|---|
| What it fixes | Movement joints: internal corners, where walls meet the floor, around the shower base, screen and tapware | The joints between individual tiles |
| Material | Flexible, mould-resistant sanitary silicone | Rigid cement-based or epoxy grout |
| Typical warning signs | Black mould in the silicone, peeling edges, gaps and cracks in the corners | Crumbling, missing or cracked grout between tiles |
| Time on site | Usually a few hours for a standard shower, plus curing time | A longer, more labour-intensive job |
| Relative cost | The more affordable option | Generally costs more, as it covers the full tiled area |
Important: corners and changes of direction should always be sealed with flexible sealant, not grout. Grout in a corner cracks as the building moves, which is one of the most common reasons showers start leaking.
4 Signs a Reseal Is All You Need
- Mould is confined to the silicone and does not come off with cleaning.
- The silicone is peeling, shrinking or pulling away from the tiles or tray.
- Cracks or gaps have appeared in the corners or along the base.
- The grout between your tiles is still solid and intact.
4 Signs You May Need Regrouting as Well
- Grout is crumbling, sandy or missing between tiles.
- Tiles sound hollow when tapped or feel loose.
- Grout stays dark and stained no matter how often you clean it.
- Water is getting in across the wall, not just at the joints.
Not sure which applies to you? Read our guide to the 7 signs your bathroom caulking needs replacing, or send us a photo and we will tell you what the job needs.
The Real Cost of Waiting: 5 Problems a Failed Seal Can Cause
A reseal is a small expense next to the damage a failed seal can cause over time. Water that gets past broken silicone can lead to:
- Damaged waterproofing: constant moisture behind the tiles puts the membrane under strain and can lead to failure.
- Rotting timber: floor joists, wall studs and particleboard flooring can swell and rot.
- Mould inside walls: hidden mould is harder to remove and can affect air quality.
- Damage to other rooms: stains on adjoining walls, lifting skirting boards and water marks on ceilings below, which is a common issue in apartments.
- A full shower rebuild: once water damage reaches the structure, stripping and rebuilding the shower can cost many times more than a reseal.
If you are already seeing water damage, our leaking shower repair guide explains the causes and next steps.
DIY vs Professional Resealing: 4 Common DIY Mistakes
A tube of silicone is cheap, but a failed DIY job often costs more to fix because the extra layers must be removed first. The most common mistakes we see are:
- Applying new silicone over old silicone, which never bonds properly and peels within months.
- Sealing over damp surfaces, trapping moisture and mould behind the new bead.
- Using the wrong product, such as acrylic gap filler or general-purpose silicone instead of a mould-resistant sanitary sealant.
- Skipping the preparation, including mould treatment, cleaning and masking, which is where most of the long-term result comes from.
5 Ways to Make Your New Seal Last Longer
- Run the exhaust fan during and after every shower, or open a window.
- Squeegee or wipe down the corners and base after use.
- Use gentle bathroom cleaners and avoid harsh, abrasive products on silicone.
- Fix dripping taps and leaking shower heads promptly.
- Check the silicone every six months for early signs of mould or lifting.
Want to know when to book your next reseal? See how often you should recaulk your shower.
Shower Resealing FAQs
How much does it cost to reseal a shower in Melbourne?
A professional single shower reseal with Professional Caulking Group starts from $250, and a double shower reseal from $350. The final price depends on the size of the shower, the condition of the existing silicone and access.
How much does it cost to caulk a bathtub?
Bath caulking for a single bath starts from $200. If your shower and vanity also need attention, a full bathroom reseal from $400 is usually better value.
How long does shower resealing take?
Most standard showers are completed in a few hours. The new silicone then needs time to cure, and we will advise how long to wait before using the shower, which is typically around 24 hours.
Is resealing cheaper than regrouting?
Yes. Resealing only replaces the silicone in the movement joints, while regrouting covers the joints across the whole tiled area, so it is generally the bigger and more expensive job.
Can you put new silicone over old silicone?
No. New silicone will not bond to old silicone, so the old bead must be completely removed and the joint cleaned and dried before resealing. This is the most common reason DIY reseals fail.
Will resealing fix my leaking shower?
If the leak is coming through failed silicone joints, resealing will usually fix it. If the waterproofing membrane or plumbing has failed, further repairs are needed. We will let you know what we find before any work starts.
How often should a shower be resealed?
It depends on how often the shower is used, ventilation and cleaning habits. Most showers need resealing every few years. Our recaulking guide explains the timeline in detail.
Do you offer same-day shower resealing?
Urgent and same-day service is available across Melbourne, subject to availability. An additional fee may apply.
Get a Fixed Quote for Your Shower Reseal
Professional Caulking Group reseals showers, baths and full bathrooms across Melbourne using premium, mould-resistant sanitary silicones with colour matching available. With a 5.0 rating from more than 570 reviews, our team is known for clean, precise work at fair prices.
Send us a few photos of your shower and we will give you a clear price before any work begins. Request your free quote today or view our bathroom caulking services.