5 Mistakes to avoid when renovating a bathroom

Knowing about these common mistakes in advance can help you to avoid these pitfalls.

1. Poor Planning and Ignoring the Layout

Bathrooms may be small, but they’re among the most technically demanding rooms in the house. A poorly planned layout can lead to cramped movement, awkward fixture placement, and expensive changes later on.

Avoid this mistake by:

• Mapping out clear zones for the shower, vanity, toilet, and storage.
• Ensure there is enough circulation space, for example enough empty space for in front of the shower and vanity for doors and drawers to open freely.
• Know what's required - in the New Zealand building code - it outlines what is what is considered exempt work and what will require a consent. Note: Tiling and the waterproof membranes that are needed underneath them will often trigger the need to apply for a building consent or a building consent exemption.
• Engaging with a professional for comprehensive planning of your bathroom can avoid costly rework.

Good planning ensures the bathroom feels spacious, functional, and intuitive to use.

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2. Underestimating the Importance of Waterproofing

New Zealand homes - especially older villas, bungalows, and units are already prone to moisture issues. Incorrect or substandard waterproofing is one of the biggest (and most expensive) renovation pitfalls.

Avoid this mistake by:

• Engaging with a professional - this is doubly important for any tile lined shower, ensure that go through the correct procedure and apply for a building consent or building consent exemption (requirements will be based on what is needed for your homes existing structure).
• Confirm with your professional that any wall and floor materials meet NZ Building Code standards (E3 Internal Moisture).
• Make sure that you receive all documentation relating to the specifications and warranties of the materials that are going into your home.
• Don't cut corners, savings here will likely end up costing a lot more to remedy in the long run.

A watertight bathroom protects your investment and prevents mould, leaks, and long-term structural damage.

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3. Insufficient Ventilation for NZ’s Moist Climate

Bathrooms generate a huge amount of moisture - which can quickly lead to condensation, mould, and damaged finishes if not handled properly. Many Kiwis underestimate how crucial ventilation is, especially in colder regions and older homes.

Avoid this mistake by:

• Installing a high-quality extraction fan that vents outside, not into the roof cavity (a must for healthy homes standards).
• Choosing a fan with the right power rating for the room size.
• Consider a humidity sensor or timer function for your fan for smart automation.
• Consider a heating source for your bathroom. Ideally heat the bathroom before showering to reduce condensation, then run the extractor fan during and after the shower (for 15-20 mins) to remove moisture.
• Pair mechanical ventilation with natural airflow where possible such as opening window

A dry, well-ventilated bathroom lasts longer and is healthier for your home.

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4. Choosing Style Over Functionality and Durability

Bathrooms require materials that can handle constant moisture, cleaning products, and daily use. While it’s tempting to prioritise aesthetic trends, not all materials perform well in bathroom conditions.

Avoid this mistake by:

• Selecting moisture-resistant cabinetry suitable for NZ humidity.
• Choosing wall finishes such as tiles, grout, and sealers that are durable and easy to maintain.
• Using slip-resistant flooring—especially important for families or older occupants. Did you know that some tiles have water activated non-slip features.
• Investing in quality tapware with solid warranties and proven performance.

A bathroom should be both beautiful and built to handle real-life use.

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5. Not Allowing Enough Storage (or the Right Type of Storage)

Storage is one of the most overlooked aspects of bathroom design, yet it plays a huge role in maintaining a functional and clutter-free space.

Avoid this mistake by:

• Choosing vanities with drawers instead of cupboards - drawers offer easier access and organisation. Many come with add on make-up organisers.
• Adding  recessed shelving in the shower or above the bath for toiletries.
• Consider a mirrored cabinet for extra discreet storage. There are a variety of styles available and many can be recessed into the wall.
• Designing storage that meets your needs for example: skincare, hair care, cleaning products, towels, and medicines.

Smart storage ensures your bathroom stays tidy and feels calm and relaxing.

Final Thoughts

A well-executed bathroom renovation can add beauty, comfort, and long-term value to your home. By avoiding these common mistakes, you can achieve a bathroom that’s not only stunning but also durable, practical, and perfectly suited to you and your lifestyle.

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Article supplied by;
‍Kathleen Magon
Refresh Renovations Queenstown & Wānaka

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