How to Make Subflooring for Radiant Heat Systems ? Regardless of the subflooring type or system (electric vs. hydronic), proper installation begins with a well-insulated base, ensuring upward heat movement.
How to Make Subflooring for Radiant Heat Systems
For hydronic systems, the tubing must connect to a manifold, which then connects to the boiler or water heater.
Electric systems require careful layout of the heating mats or cables, ensuring no overlapping, followed by connection to thermostats and the main power supply.
Always conduct pressure tests for hydronic systems or resistance tests for electric systems before sealing the subfloor to ensure there are no leaks or breaks.
Below is a step-by-step guide to installing both the subflooring and the radiant heating system.
- Plan and Design: Determine the layout of the heating system and ensure that the chosen subflooring material is compatible with radiant heating.
- Prepare the Base Floor: Clean the base floor, ensuring it’s free from debris and moisture.
- Install insulation, typically EPS (Expanded Polystyrene) or XPS (Extruded Polystyrene), to prevent heat loss downwards.
- Lay the Heating Element: For hydronic systems, lay out the tubes. For electric systems, place the electric coils or lay the radiant heat mats. Ensure even spacing for consistent heating.
- Install the Subflooring: Depending on the type chosen (Plywood, OSB, Concrete Backer Board, or Two-layer), follow the manufacturer’s guidelines. Ensure a flat and smooth surface.
- Test the System: Before installing the final flooring, test the radiant heating system to ensure even heating and correct functionality.
- Install the Final Flooring : Lay down the chosen flooring material (tile, wood, carpet, etc.) over the subflooring. Ensure the flooring material is suitable for radiant heat systems
