Abstract: A radiant floor heating system and method of installation is provided, the system of the present invention being disposed within a solidified cement or under board. A panel member having a laminated reflective material which serves as a thermal break is placed upon the hardened cement or under board. The panel member may be comprised of any substance to which the reflective material may be secured such as a honeycombed plastic panel to which the reflective material layer is laminated. A heating element is disposed on the reflective material. Thereafter, both the heating element and the reflective layer are coated with a layer of thin set or cement. The heating element may include a heated wire element which is unwound off a roll, or the heating element may be meshed within a web of material which is cut to match the dimensions of the floor and then disposed on top of the reflective layer.