MARMOX ThermoBlock

MARMOX ThermoBlock

Perfect Insulation Solution for Parapet walls and for base of walls.

Reduces energy loss at the base of walls and parapet walls.

What is a MARMOX ThermoBlock?

Marmox ThermoBlock is a high insulating, load-bearing, building block designed to replace the course of brick or block at the bottom of a wall. They practically eliminate the thermal bridge at this point and retain significant energy within the building structure.

Although Marmox ThermoBlock is a lightweight product, it has a very high average compressive strength of 9N/mm2 making it suitable for supporting walls compliant with Building Standards. The Marmox ThermoBlock consists of a core of highly insulating XPS with 18 load bearing epoxy concrete columns and a polymer concrete facing on the top and bottom layers. The core of the standard block is 85% XPS with a thermal conductivity of 0.028W/m.K and 15% epoxy concrete with a thermal conductivity of 0.125W/m.K. The average thermal conductivity of the core is therefore 0.044W/m.K.

Parapet block

Heat can be lost from a room below a flat or sloping roof that supports a parapet wall. In addition to wasting energy, parapet walls can result in condensation and mold growth on the walls underneath. Specifically, for this purpose, we have developed the Marmox ThermoBlock, or Parapet Block.

What is a Parapet block?

The Marmox ThermoBlock consists of a core of highly insulating XPS with 18 load bearing epoxy concrete columns and a polymer concrete facing on the top and bottom layers. The core of the parapet block is 85% XPS with a thermal conductivity of 0.028W/m.K and 15% epoxy concrete with a thermal conductivity of 0.125W/m.K. The average thermal conductivity of the core is therefore 0.044W/m.K. It is critical that Parapet walls are designed to resist a range of wind pressures therefore the introduction of an insulation element at the base of the wall must not compromise the integrity of the structure. To ensure the suitability of the product supporting parapet walls, tests have been carried out to EN1052-1. These have confirmed that the stability and lateral movement of a wall is unaffected by the replacing the bottom layer of bricks or blocks with ThermoBlock.

Installation instructions

1. Marmox ThermoBlock is laid onto a flat foundation layer of blocks or concrete using a standard mortar.
2. In the same way as laying a block, press the ThermoBlock into position and tap down until level and stable. The ThermoBlock have staggered joints and should be interlocked to form a rigid structure.
3. To provide a waterproof and air tight barrier at the base of the wall, Marmox Cetox-U should be used on the staggered joints.
4. To cut the ThermoBlock an ordinary handsaw can be used. A standard block rotary blade cutter may also be used as this will be able to easily cut through the concrete columns.
5. Lay the first layer of blocks on top of the ThermoBlock layer with a standard mortar. If using lightweight blocks this layer should be about 15mm thick so that the weight is distributed uniformly over the surface and through the columns.
6. Although Marmox ThermoBlock form a continuous moisture barrier it is not designed to replace the traditional damp proof course. The DPC should still be installed and its position is unaffected by the location of the layer of Marmox ThermoBlock.

Important: Read before fitting

• ThermoBlock should be laid on a flat surface and the block, brick or sole plate that is placed on top must also be flat, uniform and of the same width as the ThermoBlock
• Marmox ThermoBlock should be incorporated into the base of the wall so that its top surface is below the level of the adjoining floor. No surface of the Marmox ThermoBlock should ever be left exposed.
• Marmox ThermoBlock should not be laid on top of each other.
• Hollow or indented bricks must not be used unless the hollow is facing upwards because a flat surface should always be presented to the Marmox ThermoBlock.