Combitop Castellated board consists of an expanded polystyrene panel covered with a waterproofing foil, manufactured through the deep-drawing process.

• Ideal use: It is ideal for underfloor heating systems that require thermal and sound insulation upon impact.
• Efficient design: It allows efficient assembly without material loss thanks to the "groove on groove" principle.
• Compatibility: The secure and tight connection of the boards makes them suitable for pouring liquid screed.
• Superior insulation: The double density of the material guarantees optimal impact resistance and provides ideal thermal and sound insulation.
• Flexible pipe fixing: The shape of the grooves ensures secure fixing of the heating pipes directly into the structure under the screed. Their special structure allows the use of various pipe sizes (between 10 and 12 mm or between 14 and 17 mm).
• Assembly: It is easily processed with normal cutting tools, ensuring quick assembly, which can be carried out by one person.
• Safety and Environment: The material is not toxic or irritating and does not contain harmful substances (such as formaldehyde).