Best Plasterboard for Wet Areas

Wet areas like bathrooms, laundries, and kitchens are exposed to high humidity and occasional splashing — making moisture resistance a must. Choosing the right plasterboard for these spaces ensures your build stays strong, mould-free, and compliant with Australian standards.

Why You Need Moisture-Resistant Plasterboard

Standard plasterboard absorbs moisture, which can lead to swelling, mould growth, and eventual failure of the board. Moisture-resistant plasterboard (also known as "wet area board" or "WR board") is specifically designed with water-repellent properties for humid environments.

Where to Use Wet Area Plasterboard

• Bathrooms
• Laundries
• Toilets
• Kitchens (especially behind splashbacks)
• Any area near showers, bathtubs, or basins

Key Features to Look For

• Water-repellent core to minimise moisture absorption
• Mould-resistant facing to improve indoor air quality
• Compliance with AS/NZS 2588 for wet area plasterboard

Can You Tile Over It?

Yes — most wet area boards are designed to support tile adhesives. Just be sure to follow correct priming and waterproofing systems before tiling.

What About Ceilings in Wet Areas?

Moisture-resistant plasterboard is also ideal for ceilings in bathrooms and laundries, especially in homes without great ventilation. For higher humidity zones, pairing your ceiling board with an exhaust fan is highly recommended.

Need a Product Recommendation?

While we offer multiple moisture-resistant options, reach out to our team for the best fit based on your location and application. You can also shop our full plasterboard range here.

Buy Moisture-Resistant Plasterboard Online

At Online Plasterboard Supplies, we deliver moisture-resistant boards and accessories Australia-wide. Whether you're building in Perth, Adelaide, or beyond, we've got you covered with quality products and expert advice.

Have questions? Contact our team and we’ll guide you to the right product for your wet area project.