High-Performance Flat Dry Screed Overlay Cement Boards – Non-Routed for Underfloor Heating

Our Flat 18mm Cement Board Overlay is the perfect solution for creating a stable, durable surface for tiling directly onto your underfloor heating system. Designed with no grooves and a solid, flat surface, this board is ideal for use with grooved insulation boards, providing a strong base for tiles in both new installations and retrofits.

This board offers high thermal conductivity and low thermal resistance, maximizing heating efficiency and ensuring an even, consistent heat distribution throughout your floor. It’s designed to accept ceramic tiles directly without the need for additional substrates or adhesives.

🔍 Key Features & Benefits:

• Board Height: 18mm – Low-profile design ideal for underfloor heating installations
• Size: 1200 x 600mm (0.72m² per board)
• Interlocking Tongue & Groove Design – No screws needed for installation
• Low Thermal Resistance: 0.045m /kW – Enhances heating efficiency
• High Thermal Conductivity: 0.40W/mK – Maximizes heat transfer
• Water-Resistant – Does not contract or expand like chipboard when exposed to moisture
• High Impact Resistance – Durable enough for heavy foot traffic
• Quick Installation – Easy to install with a simple tongue and groove interlock
• Tile-Friendly – Ready to accept ceramic tiles directly without additional substrate

Minimum Order: 10 Boards (7.2m²)

❓Frequently Asked Questions

1. What is the thickness of this cement board overlay?

The board is 18mm thick, providing excellent strength and thermal efficiency for underfloor heating installations.

2. Does this board have grooves?

No, this board is flat and does not feature grooves. It is designed for use over grooved insulation boards as part of an underfloor heating system.

3. Can I tile directly onto this board?

Yes, this cement board is specifically designed to accept ceramic tiles directly without the need for extra substrates or adhesives.

4. What is the size of each board?

Each board measures 1200 x 600mm, covering 0.72m² per board.

5. Is this product water-resistant?

Yes, the board is water-resistant and does not expand or contract like chipboard when exposed to moisture, making it durable for wet environments.

6. How do I install this cement board?

The board is quick and easy to install. Simply lay it directly over your grooved insulation boards. There is no need for screws or additional adhesive.