XPS Flat Steam Room Construction Board -1220x2440mm

Oceanic XPS Steam Room Construction Board
Designed to provide a strong, waterproof, and thermally efficient foundation for all wet area installations. Made from high-density XPS foam, these boards offer exceptional durability while remaining lightweight and easy to cut, and handle on site.
Perfect for steam rooms, wet rooms, showers, spas, and all high humidity environments, these construction boards also deliver superior thermal insulation, helping maintain consistent room temperatures and improving overall energy efficiency. Whether used on walls, floors, ceilings, benches, or custom built features, they offer a stable, reliable substrate that speeds up installation and enhances structural integrity.

What is XPS?
XPS board (Extruded Polystyrene board) is a high performance, rigid insulation material engineered for environments where moisture, heat, and structural stability matter. It is created through a continuous extrusion process that produces a dense, closed cell foam meaning each microscopic cell is fully sealed. This gives XPS its signature combination of strength, water resistance, and thermal efficiency.

What makes XPS board unique?
- Completely waterproof core: 
Unlike open cell foams that can absorb moisture, XPS’s closed cell structure prevents water from penetrating the board. This makes it ideal for wet rooms, steam enclosures, bathrooms, and spa environments where constant humidity is expected.
- Exceptional thermal insulation:
XPS boards trap heat efficiently, reducing warm up times and helping steam rooms maintain a consistent temperature. Their low thermal conductivity makes them more effective than many traditional insulation materials.
- Lightweight, yet highly robust:
Despite being easy to lift, cut, and shape, XPS boards are impressively rigid. They provide strong surface stability for tiles making them a preferred substrate in steam rooms and wellness installations.
- Vapour resistant:
Because XPS resists both moisture and vapour transfer, it helps prevent condensation build up inside walls and ceilings protecting the structure long term.
- Dimensionally stable:
It won’t warp, swell, or deteriorate when exposed to steam or temperature fluctuations, ensuring the steam room remains solid and sealed over many years.