The Legalett Air-Heated Radiant GEO-Slab (Structural Slab-on-Grade) or Buried Foundation employs standard building components such as furnaces, piping, Insulation, concrete, and is usually assembled by construction professionals, but self-build ICF Floors for homes can also be built by competent Do-It-Yourself individuals with minimal supervision.
The following photographs provide a pictorial description of the installation of a typical Legalett Structural Slab-on-Grade and Foundation Radiant Floor Heating project.
1. Strip topsoil and place 3/4" clear stone.Compact, smooth and level. 2. Locate and place plumbing risers and all other under slab services. 3. Lay out edge elements 4. Install first layer of polystyrene insulation board. 5. Install second layer of polystyrene insulation board, offsetting the joints 6. Install the bottom layers of wire mesh on chairs as per drawings (perimeter or bearing walls only) 7. Install furnace boxes as per drawings and Product Data Sheets. 8. Cut and install piping 9.Insulate ductwork as per drawings 10. Complete installation of piping 11.Install the top layer of wire mesh, and other rebar as per drawings 12. After inspection by LEGALETT installer, place concrete using vibrator. 13. Steel trowel surface using power trowels.Hand trowel around furnace boxes. 14. Keep top of slab moist for 3 days to minimize shrinkage cracking 15. A Legalett construction heater can be used during and after placing the concrete and needs to be run for 2 weeks before flooring material installation or permanent insert installation.