Bathroom flooring takes more punishment than almost any other surface in your home — constant moisture, bare feet, and cleaning chemicals all take their toll. Choosing the wrong material can lead to slipping hazards, mould, and costly repairs. Here's a practical guide to the best options for New Zealand bathrooms, covering performance, safety, and compliance with the NZ Building Code.
Why Bathroom Flooring Is Different
Bathrooms are classified as wet areas under the NZ Building Code, specifically covered by Clause E3 (Internal Moisture). This means your flooring must resist water penetration, be easy to clean, and — critically — provide adequate slip resistance. MBIE Building Performance sets out these requirements, and any flooring installation in a wet area should meet them. Slip resistance is measured using a pendulum test value (PTV) or wet-area classification; look for products rated P4 or higher for wet barefoot areas like bathrooms.
The Best Bathroom Flooring Options
1. Ceramic and Porcelain Tiles
Tiles are the most popular bathroom flooring in NZ — and for good reason. Porcelain tiles in particular are extremely dense, virtually waterproof, and highly durable. They're available in a huge range of sizes, colours, and finishes.
- Choose matte or textured finishes for better slip resistance (polished tiles can be dangerously slippery when wet)
- Smaller tiles (mosaic or 100×100 mm) with more grout lines naturally improve grip
- Grout should be epoxy-based or sealed to resist mould and staining
- Cold underfoot unless you install underfloor heating beneath them
Porcelain tiles are a long-term investment — installed correctly, they can last decades.
2. Luxury Vinyl Plank and Tile (LVP/LVT)
Luxury vinyl has become hugely popular in NZ bathrooms over the last decade. Modern LVP/LVT is 100% waterproof, warm and soft underfoot, and much easier to install than tiles.
- Look for products with a wear layer of at least 0.3 mm for bathroom use
- Ensure the product is rated for wet area use — not all vinyl is
- Warm and comfortable underfoot — great for families with young children
- More susceptible to scratching and UV fading than tile over the long term
- Available at Bunnings and Mitre 10 in a wide range of styles
3. Sheet Vinyl
Traditional sheet vinyl remains a practical, budget-friendly option. Because it comes in large rolls with minimal seams, it's actually excellent at keeping water out — fewer joins means fewer places for moisture to penetrate.
- One of the most affordable options
- Seamless installation reduces moisture ingress risk
- Less stylish than LVP but very functional
- Can be damaged by heavy furniture or sharp objects
4. Natural Stone
Slate, travertine, and marble look stunning but require more maintenance in a bathroom setting. Natural stone is porous and must be sealed regularly to prevent water absorption and staining.
- Ensure slip resistance ratings are appropriate for wet use
- Higher cost for both materials and installation
- Requires ongoing sealing — typically annually
- Best suited to bathrooms with good ventilation and careful maintenance
5. Engineered Timber
Solid timber is generally not recommended for bathrooms due to moisture swelling and warping. Engineered timber (a real wood veneer over a stable core) can work in bathrooms with excellent ventilation, but it's a risk — even small amounts of standing water can cause damage over time. Most flooring professionals in NZ would steer you away from timber in a full bathroom.
Comparison Table
| Flooring Type | Water Resistance | Slip Safety | Warmth | Cost (Guide) | Durability |
|---|---|---|---|---|---|
| Porcelain Tile | Excellent | Good (matte) | Cold | Mid–High | Excellent |
| Luxury Vinyl (LVP) | Excellent | Good | Warm | Low–Mid | Good |
| Sheet Vinyl | Very Good | Good | Warm | Low | Moderate |
| Natural Stone | Moderate (sealed) | Variable | Cold | High | Excellent |
| Engineered Timber | Poor–Moderate | Moderate | Warm | Mid–High | Poor in wet areas |
Cost ranges are a general guide only and vary by supplier, region, and installation complexity.
Slip Resistance — A Safety Priority
Slips and falls in bathrooms are a leading cause of home injury in New Zealand. WorkSafe NZ highlights wet-area slip hazards as a serious risk, particularly for older residents. When selecting tiles or vinyl, always check the manufacturer's slip resistance rating and ask your supplier specifically about wet barefoot performance. BRANZ also provides guidance on wet-area surface performance for NZ conditions.
Waterproofing Under the Floor
The flooring itself is only part of the picture. Under the NZ Building Code (E3), the substrate and junctions — particularly around the shower, bath, and toilet — must be properly waterproofed. This typically means a tanking membrane applied to the floor and lower walls before tiling. Products from Ardex, Mapei, and Sika are widely used by NZ tradespeople for this purpose.
If your subfloor is particleboard (common in NZ homes built from the 1970s–2000s), check it carefully for moisture damage before laying any new flooring — particleboard swells and deteriorates quickly when wet.
When to Call a Professional
While an experienced DIYer can lay sheet vinyl or click-lock LVP, tile installation in a wet area is best left to a qualified flooring installer or tiler. Getting the waterproofing membrane, tile adhesive, and grout right is critical — mistakes can lead to leaks, mould inside your walls, and expensive remediation.
If your bathroom renovation involves moving or adding plumbing fixtures, this is restricted work under the Plumbers, Gasfitters, and Drainlayers Act and must be carried out by a licensed tradesperson registered with the Plumbers, Gasfitters & Drainlayers Board. Similarly, any electrical work (such as adding underfloor heating circuits or heated towel rail wiring) must be done by a registered electrician — check the Electrical Workers Registration Board to verify credentials.
For peace of mind, find a qualified local flooring installer or tiler on tradedirectory.co.nz.