Do I need a plumber to install a vanity?
Yes – in NSW, any plumbing work involved in vanity installation has to be done by a licensed plumber. This includes connecting water supply lines and waste pipes, and it applies even to a straightforward like-for-like swap.
A licensed plumber is needed for:
- Connecting the basin waste to the existing drain
- Connecting hot and cold water supply to new tapware
- Adjusting or moving plumbing to suit a new vanity position
- Installing new tapware, mixers, and pop-up wastes
Fixing and waterproofing a vanity takes skill too, but the plumbing work is the part that’s legally non-negotiable. Unlicensed work on these jobs can void insurance and cause problems if you sell the house later.
Vanity Types & Configurations We Install
Not every vanity goes in the same way, and we’ve installed pretty much every type you’ll find in Wollongong bathrooms.
Freestanding Vanities: These sit on the floor and are the most common type we install. We level them properly and fix them in place so they don’t rock or shift over time.
Wall-Hung & Floating Vanities: These need to be fixed into the wall studs or a backing frame strong enough to hold the weight. If that part’s not done right, the vanity can pull away from the wall down the track.
Inset, Undermount & Above-Counter Basins: The join between the basin and the benchtop is a common spot for water to get in if it’s not sealed properly. We take care with the silicone and waterproofing here so it stays watertight.
Custom Joinery Vanities: Older homes often have walls and floors that aren’t perfectly straight. With custom vanities, we template and scribe the unit to fit your space properly, instead of leaving gaps.
The Plumbing Work Involved
Any waste or water supply connection on a vanity has to be done by a licensed plumber under NSW rules. We’ve covered the legal side already, so here’s what that work actually looks like.
Connecting Waste & Drainage: This is connecting the basin’s waste pipe to your existing drain. It sounds simple, but it needs to be lined up and sealed properly so there’s no slow leak hiding under the cabinet.
Water Supply & Tapware Connections: This covers connecting the hot and cold water lines to your new tapware, plus fitting the mixer and pop-up waste. We make sure everything’s connected cleanly with no drips.
Adjusting or Relocating the Plumbing Rough-In: Sometimes your new vanity is a different size or shape to the old one, which means the pipes coming out of the wall or floor need to be moved to line up. We sort this out as part of the install so everything fits where it should.
Waterproofing & Silicone Finishing at Vanity Junctions
The spots where your vanity meets the wall and floor are where water likes to sneak in if they’re not done properly. This is especially true behind wall-hung vanities, where there’s a gap between the unit and the wall, and around the basin where splashes and overflow happen.
We take the time to get the waterproofing and silicone right at these junctions. It’s not just about how it looks when we’re finished – a clean silicone line that’s actually sealed properly is what stops water getting into the wall or floor and causing damage you won’t see until it’s a bigger problem. This is one of those things that’s easy to rush, and it’s exactly the kind of detail that makes the difference between a vanity that lasts and one that causes trouble in a year or two.
Supply-Only vs Full Supply & Install
Some homeowners have already picked out and bought their vanity and just need it installed properly by a licensed plumber. Maybe you’ve found something online, or you’ve already started a bigger reno and have the vanity sitting in the garage waiting to go in. We’re happy to come in and just do the install, plumbing, and waterproofing.
Other homeowners aren’t sure where to start. What size will actually fit the space, what style suits the rest of the bathroom, and will it line up with the existing plumbing without needing extra work? In that case, we can talk you through the options and help you pick something that fits your bathroom’s dimensions and plumbing rough-in properly.
Either way works for us. Supply and install, or install only – we’re happy to do whichever one suits you.
Removing & Disposing of Your Old Vanity
Getting rid of the old vanity is part of the job too, not something we leave for you to sort out afterwards.
This starts with disconnecting the plumbing safely, then capping or adjusting the pipes so everything’s sealed off properly while the new vanity goes in. If your new vanity is a different size or shape to the old one, there’s often some patching needed on the tiles or wall where the old unit used to sit – otherwise you’re left with marks or gaps showing.
Once everything’s disconnected and the space is ready, we take the old vanity away and dispose of it properly. It’s one less thing for you to worry about, and it’s easy to overlook this part until you’re stuck with an old vanity sitting in the garage with nowhere to go.
Common Vanity Installation Problems (and How We Avoid Them)
We’ve seen plenty of vanity jobs that haven’t gone to plan, usually because something got rushed or skipped. Here’s what we watch out for:
- Poor levelling – a vanity that’s not level looks off straight away, and over time it can put pressure on the benchtop and cause cracking
- Leaking junctions from rushed waterproofing – if the silicone and waterproofing at the wall and floor joins aren’t done properly, water gets in and you won’t notice until there’s damage behind the wall
- Mismatched plumbing rough-ins – if the new vanity doesn’t line up with where the pipes come out, you end up with awkward bends, visible pipework, or connections that aren’t sealed properly
- Unlicensed plumbing work – this can mean leaks down the track, and it can cause problems with insurance or at resale if it’s ever checked
We take our time on each of these so you don’t end up dealing with any of it later.
Vanity Installation Across Wollongong & the Illawarra
We install vanities in homes right across Wollongong and the Illawarra, including Thirroul, Corrimal, Bulli, Shellharbour, and Albion Park. Whatever style of home you’ve got and whatever type of vanity you’re after, we’ve installed it before.
Our plumbers are licensed, our waterproofing is done properly at every junction, and we handle the whole job from supply through to disposal of your old vanity. We’ve worked across all the different vanity types and configurations you’ll find in local homes, from older fibro houses to newer builds.
A properly installed vanity by a licensed plumber is the difference between an upgrade that lasts for years and one that’s leaking within months. If you’re ready to get your vanity sorted, get in touch for a free measure and quote.
Frequently Asked Questions
Yes, in NSW any plumbing connections for a vanity have to be done by a licensed plumber, even for a simple like-for-like swap. We handle this as part of every install.
Mostly, yes, but it depends on what’s behind the wall. We check there’s a stud or backing frame strong enough to take the weight before we fix it in place.
Either way works for us. We can supply and install the whole thing, or if you’ve already bought a vanity, we’re happy to just handle the install.
A straightforward swap can usually be done in a day. If the plumbing needs adjusting or there’s patching to do, it might take a bit longer.
We disconnect it safely, cap off the plumbing, and take the old unit away for disposal so you don’t have to deal with it.
Sometimes, yes, if the new vanity doesn’t match the footprint of the old one. We patch the tiles or wall where needed so it looks finished.
Yes, this is common in older homes. We template and scribe the vanity to fit your actual wall and floor, rather than leaving gaps.
Get Your Free Quote Today
If your vanity’s chipped, dated, or just not doing it for you anymore, Bathroom Renovations Wollongong is ready to help. We supply and install vanities for homeowners right across Wollongong and the Illawarra, handling the whole job – plumbing, waterproofing, levelling, and removal of your old vanity – so there’s nothing left for you to sort out.
Whether you’ve already got a vanity picked out and just need it installed, or you’re not sure where to start and want some guidance on what suits your bathroom, we can help either way.
Give us a call on (02) 4003 6408 for a free measure and quote. We’ll talk through what you need and get your new vanity sorted properly, start to finish.
