Overlay Panel – Benefits Easy Install Overlay Panels Now Available from JCW The time-saving and hassle-free underfloor heating overlay panel is used as a floating floor (F/F) for heating on a load-bearing floor that requires additional insulation. It is suitable for installation on an existing ground slab, intermediate floor, or cellar space. It is available in various thicknesses and has grooves for aluminium heat distribution plates. The heating pipe loops