You’ve probably noticed it in the morning light. A black line creeping along the join where the screen meets the base, or a strip of sealant that has started lifting away from the tiles like old sticky tape. Here’s the short answer on what a shower silicone replacement will set you back. Doing it yourself costs about as much as a cartridge of sealant, a removal tool and a bottle of methylated spirits, which is a very low estimate by any home maintenance standard.
Bringing in a tradie costs more, with a moderate estimate for a single shower and a considerably higher estimate if the grout needs redoing at the same time. This guide walks through the real cost drivers, when DIY makes sense, which product to buy, and how long you have to stay out of the shower afterwards.
Shower Silicone Replacement Cost at a Glance
Below is how the typical jobs compare against each other. No two bathrooms quote the same, so treat these as relative estimates rather than fixed prices.
| Job | Estimate band |
| DIY materials only | Very low |
| Professional reseal, one shower | Moderate |
| Bath reseal | Moderate, slightly under a shower |
| Kitchen sink or vanity reseal | Low |
| Whole bathroom, shower plus bath plus vanity | Moderate to high |
| Reseal plus a full regrout | High |
| Epoxy regrout with reseal, larger shower | Highest |
| Minimum call-out fee | Applies to all small jobs |
That last row matters more than people expect. No tradie will load the ute and drive across town for twenty minutes of work, so a minimum call-out applies whether you have one joint or six. A single small reseal often costs much the same as doing the shower, bath and vanity together, so book them in one visit. The other thing worth understanding before you compare quotes: a shower silicone replacement is not the same job as a regrout, and neither of them is waterproofing. More on that shortly.
What Affects the Price of Bathroom Silicone Replacement
Quotes for bathroom silicone replacement vary widely. The gap between the cheapest and dearest shower silicone replacement quote you receive usually comes down to these factors.
- How much silicone there actually is. A compact square shower has a fraction of the linear metreage of a long walk-in with a hob, screen returns and a glass-to-glass join. Tradies price by the metre in their heads even when they quote a flat rate.
- How hard the old sealant is to remove. This is the highest hidden cost on any job. Where a previous owner has simply run fresh silicone over the top of the old stuff, sometimes two or three layers deep, stripping it back properly can take longer than the entire application. Ask any sealing specialist what pushes a quote up and this is what they’ll name.
- How bad the mould is. Surface mould wipes off. Mould that has grown down into the sealant means the joint must be stripped completely and the substrate treated and dried before anything new goes on.
- The shower type and access. Frameless screens, glass-to-glass joins and hobless showers all take longer to mask and tool neatly. Awkward corners cost time.
- Where you live. Sydney and Melbourne labour rates sit roughly fifteen to twenty per cent above Adelaide and Brisbane, and regional jobs add travel on top.
- Whether the grout is going too. A reseal only replaces the flexible joints. If the grout lines are powdery or falling out, you’re looking at a different job with a much higher estimate, and that’s where the big numbers in most quotes come from.
- Who you hire. Handypeople, sealing specialists and licensed plumbers all charge differently. For straightforward resealing, a specialist usually gives you the best mix of price and finish.
DIY or Hire a Pro?
Take on the shower silicone replacement yourself if the sealant is failing cosmetically, the runs are short and reasonably straight, there is no sign of water damage anywhere, and you have a free afternoon plus the patience to prepare properly.
Get a professional in if any of the following apply:
- Water stains on the ceiling below, swollen skirting boards, or a musty smell that never clears. These point to a failed waterproofing membrane, and a shower silicone replacement will not fix that.
- Your shower is hobless, or the screen is frameless with tricky glass joins.
- You want a genuinely straight, even bead. Tooling silicone neatly is far harder than it looks, and a wobbly finish is the number one reason DIY jobs get redone within a year.
- It’s a rental or strata property and the work needs documenting.
One useful clarification. Replacing sealant is not plumbing work and doesn’t require a licensed plumber. Anything that touches the waterproofing membrane under your tiles falls under AS 3740:2021, the Australian standard covering waterproofing of domestic wet areas, and that work belongs with a qualified waterproofer. Licensing requirements vary between states, so check with your state’s building authority if you’re unsure who can legally do what.
Best Silicone for Shower Australia-Wide
The product you pick matters nearly as much as the prep work on any shower silicone replacement. When people ask about the best silicone for shower Australia conditions, the answer comes down to a handful of specifications on the cartridge rather than a single brand name.
- Neutral cure or acetic cure. Acetic silicone is the one that smells like vinegar. It’s cheaper and perfectly fine on ceramic tiles and glass, but it can stain natural stone, marble and some metals. Neutral cure is the safer all rounder if you’re not certain what your surfaces are.
- Mould resistant. Look for wording like wet area, kitchen and bathroom, or anti-mould. A fungicide in the mix is non negotiable in a shower.
- One hundred per cent silicone. Avoid silicone-acrylic hybrids and anything described as paintable. They fail quickly under constant water.
- Colour. Clear or translucent color forgives colour mismatch. White looks sharper but shows mould sooner. Greys and beiges are widely available if you want to match darker grout.
- Coverage. A standard 300 ml cartridge covers roughly ten to twelve linear metres at a typical bead width, which is enough for most single showers with a bit spare.
Selleys Wet Area, Sika’s SikaSeal Kitchen and Bathroom, Bostik and Dow are all commonly stocked through Bunnings and trade suppliers here. Any of them will do the job properly if the surface prep is right.
Best Silicone for Shower Floor Joints
The best silicone for shower floor joints needs a higher movement capability than the wall joints do, and here’s why. The floor-to-wall junction flexes every time someone stands in the base, and it sits in standing water longer than anything else in the room. A neutral cure sanitary silicone rated for high movement is the right call. Be warned that the floor joint is also the one most likely to have been over-sealed by whoever owned the place before you. Budget extra time for removal.
Replacing Silicone Around Shower Tray Edges
Shower silicone replacement around shower tray perimeters has one trick to it that most guides skip entirely. Acrylic and polymarble trays flex much more than tiled bases. Before you apply anything, tip a couple of buckets of water into the tray so it settles into its loaded position. Run your bead, then leave the water sitting there until the sealant has skinned over.
Without this, the base drops the first time someone stands in it and tears your fresh bead straight away. That one step is the difference between a shower silicone replacement that lasts a decade and one that fails in a fortnight. And never run new sealant over the old. Full removal, every time.
How to Do a Shower Silicone Replacement Yourself
- Gather your gear. Silicone remover tool or a sharp Stanley knife, silicone remover solvent, methylated spirits, a cartridge gun, masking tape, mould killer, gloves and rags.
- Strip the old bead out completely. Cut down both sides of the joint and pull it away in one piece where you can. Scrape off every trace of residue.
- Treat any mould and dry the area thoroughly. A damp joint is the single most common reason a fresh bead lets go early. Give it hours, not minutes.
- Wipe down with metho. This lifts soap scum and oils that stop adhesion. Let it flash off completely.
- Mask both sides of the joint. Leave a consistent gap so the finished line is even.
- Cut the nozzle at 45 degrees to the bead width you want, slightly narrower than you think. Apply in one steady continuous pass.
- Tool the bead straight away with a wet finger dipped in soapy water, or a proper bead tool.
- Peel the tape off while the silicone is still wet, pulling away from the bead rather than across it.
- Walk away and leave it alone to cure.
Common mistakes to avoid: sealing over the old bead, applying onto a damp joint, cutting the nozzle too wide, and getting back in the shower too early.
How Long to Wait After Silicone Shower Resealing
Wait a minimum of 24 hours after a shower silicone replacement before letting any water touch the fresh joint. A skin forms within 15 to 30 minutes, and it will feel dry to the touch long before that, but the bead underneath is still soft and will fail if it gets wet. Full cure takes up to seven days on deep or wide beads, because silicone cures from the outside in. A thick bead takes considerably longer than the tube suggests.
Conditions change the timing. Cold air slows curing, so a Melbourne bathroom in July takes longer than a humid Brisbane one in February. Neutral cure products draw moisture from the air, so very dry air slows them too. Run the fan and open a window while it sets. The colour may shift slightly as it cures, which is normal. Practical tip for single bathroom households: start the job first thing in the morning so your 24 hours land at a convenient time the next day.
How Often Does It Need Doing?
Well applied wet area sealant lasts somewhere between five and ten years. Poor ventilation, a big family and daily use all shorten that. Book a shower silicone replacement when you see black spotting that won’t clean off, edges lifting or peeling, splits and cracks along the bead, gaps opening at the corners, or water sitting behind the sealant. To stretch the life of a fresh bead, squeegee the screen, run the exhaust fan for fifteen to twenty minutes after every shower, and stay away from heavy bleach based cleaners, which break silicone down over time.
Getting Quotes for a Shower Silicone Replacement
Most people start by typing shower silicone replacement near me into their phone, which is fine as a starting point. Just ask these questions before you commit:
- Is the price a flat rate or hourly?
- Does it include removing the old sealant? Some cheaper quotes assume you’ve already stripped it back yourself.
- Is there a minimum call-out fee?
- Are you insured, and can I have your ABN?
Get two or three quotes and read the recent reviews, not the highlight ones on the website. When you are comparing results from a shower silicone replacement near me search, bundle the work into one booking. Shower, bath, vanity and sink in a single visit beats paying the call-out minimum twice.
FAQs
Can I just run new silicone over the old?
No. Fresh sealant won’t bond properly to cured silicone, so the new bead lifts within months. Worse, you seal moisture and mould in underneath where it keeps growing. Full removal is the only approach that lasts.
Does mouldy silicone mean my shower is leaking?
Usually not. Mould in the sealant is generally a ventilation issue rather than a leak. If you also see ceiling stains below, swollen skirting or a persistent musty smell, that’s a different problem and worth investigating properly.
Is this a plumber’s job?
Not necessarily. Resealing isn’t plumbing work, and sealing specialists or handy people do it every day. Membrane and waterproofing work is where you need a qualified trade. Requirements vary by state, so check locally.
Clear or white sealant?
Clear hides imperfections and colour mismatches, and it disguises early mould. White gives a crisper, more finished look but shows staining sooner. Both perform identically if the product is wet area rated.
How long to wait after silicone shower work before using it again?
Twenty four hours as a firm minimum. If the bead is thick, or the weather is cold, give it longer. Nothing is gained by rushing this.
Will a shower silicone replacement fix a leak?
Only if the leak is coming through a failed joint. If water is getting past the waterproofing membrane under your tiles, no amount of sealant will stop it, and you’ll need the membrane assessed.
Conclusion
A shower silicone replacement is one of the cheapest, easiest jobs in any bathroom and one of the easiest to put off. Left too long, a blackened or lifting joint stops being cosmetic and starts letting water where it shouldn’t. A simple bathroom with cosmetic wear only is a fair DIY job. Anything showing signs of water getting further than the joint, or a more complex shower, is worth handing to a specialist. Either way, don’t wait for the bead to tear through. A quick reseal now is always the smaller job.
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