Any type of floor construction can be used with a radiant heat system. The most common will be a slab on grade, or a frame floor. Some variations of these may include a thin slab over a frame floor or a Sandwich application. The important thing to remember is to inform us of the exact construction of the floor. There will be design variations between a frame floor project and a slab on grade. Keep in mind, it is better to design the building for what is required structurally and let the radiant system be designed around the construction details.