Marmox Shower Underlay 900X1200 Long Grate Mmt-T0912T

Marmox Shower Underlay Long Grate

The Marmox Shower Underlay Long Grate System is a modern drainage solution designed for sleek, contemporary bathrooms and wet rooms. Featuring a linear (long grate) drain design, this system creates a minimalist, high-end finish while delivering efficient water flow—ideal for open-plan showers and larger tiled areas.

Built from a durable yet lightweight polymeric cement core, and reinforced with alkaline-resistant glass mesh, the Marmox underlay provides a strong, stable, and tile-ready base. The tray is pre-formed with a precise gradient to direct water efficiently toward the linear drain, ensuring optimal drainage performance.

Designed with flexibility in mind, the underlay can be cut to size on-site, allowing it to suit a wide range of layouts—including custom and irregular shower spaces. Its low-profile design also enables step-free access, making it perfect for modern and accessible bathroom designs.

Note: Waterproofing over this system is strongly recommended to comply with Australian Standards.

Key Features & Benefits

• Linear long grate drain for a modern, architectural look
• Pre-formed slope ensures efficient water drainage
• Cut-to-size flexibility for custom shower layouts
• Ideal for wet rooms and open shower designs
• Low-profile, step-free access for accessibility
• Lightweight and easy to install
• Compatible with timber or concrete subfloors (must be fully supported)
• Tile-ready surface, suitable for a wide range of tile finishes

Available Sizes

• 900 × 1200 mm
• 1000 × 1000 mm
• 1000 × 1500 mm
• 1000 × 2000 mm
• 1200 × 2000 mm

The Marmox Long Grate Shower Underlay is the ideal choice for builders, designers, and renovators looking to achieve a clean, seamless finish with high-performance drainage, perfect for modern bathrooms and luxury wet room installations.

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