Installing Underfloor Heating in a Structural Floor Build-Up: Step-by-Step Guide
When underfloor heating (UFH) is integrated into a structural floor build-up, it requires careful planning and precise execution. A well-designed build-up ensures the system performs efficiently, remains protected, and delivers long-lasting comfort. Below is a clear breakdown of each stage, along with the essential considerations for a successful installation.
1. Preparing the Floor with High-Density Insulation Panels
The process begins by laying high-density flooring insulation panels across the entire floor area. These panels form a stable, insulated base that helps maximise the thermal efficiency of the UFH system. The specification and thickness of the insulation will vary depending on the project, but its role remains critical: reducing heat loss and supporting the structural integrity of the floor.
2. Adding Reinforcing Mesh for Structural Support
Once the insulation is in place, the next step is to overlay it with reinforcing mesh. This mesh strengthens the structural floor build-up and provides a secure fixing point for the underfloor heating pipework. Ensuring the mesh is correctly laid and positioned is essential for maintaining an even and stable heating layout.
3. Securing the Underfloor Heating Pipework
With the reinforcing mesh installed, the UFH pipework can be carefully positioned and tied to the mesh. This prevents pipe movement during the screeding stage and maintains the correct pipe spacing for even heat distribution. Proper securing is vital to avoid displacement, which could impact the system’s long-term performance.
4. Laying the Screed or Concrete
After the pipework installation, it’s important to lay the screed or concrete as soon as possible. Prompt screeding protects the pipework and locks the system into its final position. Delays at this stage increase the risk of accidental damage to the exposed UFH system.
For projects using liquid screed, there is an additional crucial step: sealing the insulation. This creates a watertight base, preventing liquid screed from escaping through gaps and ensuring a smooth, robust, and stable floor finish.
