Building a new home is exciting. You pick the tiles, the taps, the shower style. But have you thought about what’s sitting under all of that?
A bathroom can look perfect and still have a hidden problem. If the waterproofing is poor, water can get into places it shouldn’t. Over time, that can mean mould, damaged finishes and big repair bills.
So what should you check before your bathroom is finished?
If you’re looking at home designs with Granton Homes, knowing a few basics can help you ask the right questions while your home is being built.
Why Does Bathroom Waterproofing Matter So Much?
Your bathroom gets wet every single day. Showers, baths, basins and damp floors all add moisture.
Waterproofing stops that water from getting behind your fittings and wall linings. Without it, damage can build up out of sight for a long time.
Australian building rules do cover waterproofing in wet areas of homes. The exact rules depend on the building code and how your home is built.
So before construction starts, ask how your bathroom waterproofing will be designed and installed.
Are Tiles Enough to Keep Water Out?
No. Tiles and grout alone won’t do the job.
Water can still get through the joints and tiny gaps. That’s why what’s under the tiles, and how the bathroom is built, matters so much.
A proper waterproofing system has to go in first, following the right requirements, before any tiles or final finishes are added.
So when you look at your bathroom design, remember that nice tiles are only one piece of the puzzle.
Which Parts of the Bathroom Need Extra Care?
Some spots take more water than others. The shower area, floor edges, wall corners, drains and the areas around pipes and fittings all need careful detailing.
The exact requirements can change depending on your shower design and the building rules that apply.
Before the bathroom is finished, ask your builder how these areas will be handled. Also ask what inspections will be done and what paperwork you’ll get.
The waterproofing should form one continuous barrier where needed. There shouldn’t be gaps at corners or around fittings.
Does the Floor Design Make a Difference?
Yes. The floor needs to be designed so water flows where it should, especially if there’s a floor drain.
The slope of the floor, the position of the drain and the waterproofing details all work together.
If water keeps pooling in the wrong spots, there may be a drainage or surface problem. It’s worth getting a professional to take a look.
When you talk to Granton Homes about your design, ask how the shower and floor will be set up so water runs to the drain.
Can Poor Ventilation Cause Problems Even With Good Waterproofing?
Yes. Waterproofing and ventilation do two different jobs.
Waterproofing controls water getting into the building. Ventilation removes moisture from the air.
After a hot shower, you’ll often see steam on mirrors, walls and windows. If the room doesn’t dry out properly, that damp air can lead to mould.
So think about these things: Does the bathroom have a good exhaust fan? Where will the air be sent outside? How will fresh air get into the room?
Good ventilation, smart moisture control and proper waterproofing work best together. They help keep your home healthier.
What Should You Think About Before Choosing Fixtures?
Where you place your taps, shower fittings and basins affects how the bathroom is built and waterproofed.
Pipes passing through walls and floors need proper detailing around them. And if you change your mind late in the build, it may mean extra work.
Before you lock in your bathroom layout, think about:
- Where the shower and basin will go.
- Whether the shower design suits your daily routine.
- How the drain and floor layout will work.
- Whether the fittings you’ve picked suit the space.
- Whether any design changes could affect the waterproofing.
Planning these early can save you from avoidable changes later.
What Should You Ask Before Handover?
Before you move into your new home, make sure you know what’s been installed and what paperwork you should receive.
Here are some good questions to ask:
- Was the bathroom waterproofing done according to the required standards?
- Were the right inspections carried out?
- Can I see the records or compliance documents?
- Has the bathroom been checked for visible defects?
- What should I do if I notice leaks or damp patches after moving in?
If you see cracked finishes, damp patches that won’t go away, or water escaping from the shower area, don’t just hope it will fix itself. Call a building professional to find the cause.
Final Thoughts
A beautiful bathroom also needs to handle daily water use. Tiles, fittings and colours get your attention first, but waterproofing, drainage and ventilation matter just as much.
If you’re researching a new home with Granton Homes, ask about these details before the bathroom is built. Knowing the process helps you make better decisions, and you’ll know which documents to keep after handover.