What Is the Purpose of a Dual Overlay System?

A dual overlay system is designed to create a smooth, stable, and level subfloor above electric foil underfloor heating systems. Installed as a free-floating layer, it protects the heating elements while providing a suitable surface for a wide range of floor finishes.

This type of overlay is particularly recommended for soft and resilient flooring materials, including vinyl, carpet, and certain types of engineered flooring. By creating an even subfloor, it helps improve the quality of the finished floor, supports proper heat distribution, and contributes to the long-term performance of the underfloor heating system.

Using a dual overlay system also simplifies the installation of floor coverings by providing a durable base that is compatible with flooring products requiring a flat and stable surface.