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dual overlay concrete

Dual Overlay Concrete

Warmup’s Dual Overlay Concrete can be used with a variety of our water underfloor heating solutions as a screed replacement system.

Key benefits


Even Heat Distribution

Base board and top board utilises a contact adhesive to bond them together, providing an even heat distribution


Protects the Heating System

Provides a stable subfloor on which a variety of floor coverings can be laid.


Easy Installation

Installation is quick and easy and the system helps to protect the floor heater if the floor finish is not laid immediately,

What is the Dual Overlay Concrete System?

Dual Overlay Concrete is a fast-track floor preparation system that has been specifically designed to use as screed replacement for the Total-16, Econna Joisted Floor and Contura Floating Floor water underfloor heating systems.

Positioned above the floor heater, it provides a stable subfloor for the floor finish. The Dual Overlay Concrete system is quick and clean to install and provides a ‘dry’ solution to an underfloor heating installation. Its low heat resistance allows heat to pass through the floor with no reduction in efficiency, guaranteeing an even distribution of heat.

It is suitable to use with a range of floor finishes including carpet, vinyl, wood and tiles and can be used within wet or dry rooms.

Dual Overlay Concrete Composition

The Dual Overlay Concrete System comprises of a 6mm-deep cement-coated base board and 6mm-deep cement-coated top board. Composed of high-quality cement, quartz and filling materials, the boards are available in 1200mm x 600mm panels, each panel weighing 7.5kg with a thermal Rm value of 0.038 per square metre. Each board is also ready-coated in an interactive adhesive, making installation fast and hassle-free.

Installation Guide

Once the Warmup underfloor heating system is successfully installed, prepare for the installation of the Dual Overlay Concrete subfloor by laying down a decoupling layer (typically a PE Foil) and Warmup Perimeter Strips.

Acclimatise and cut the boards to size before laying the base boards down, adhesive side up. Lay the top boards, adhesive side down, above the base boards with staggered, overlapping joints to create a solid bond between the two boards. This will provide a strong, durable subfloor surface on which to lay the floor finish.

For a more detailed look at how to install the Dual Overlay Concrete System, please find the Installation Manual and Technical Specifications below.

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Warmup offers an extensive range of electric and water floor systems compatible with all floor types, rooms and projects.

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  • ✓ Ideal for zones less than 25m²
  • ✓ Ideal for single rooms
  • ✓ Does not alter floor levels
  • ✓ Great for renovations

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  • ✓ Ideal for larger zones over 25m²
  • ✓ Rapid auto heat loss calculations
  • ✓ Compatible with existing central heating systems
  • ✓ Great for new-builds

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