Concrete Slab and Radiant Heat Insulation | InsulationStop.comCustomer Support2022-10-31T04:25:33+00:00 Need Insulation for UNDER CONCRETE SLABS or UNDER SLABS WITH RADIANT HEAT ? 1Under Slab 2 Under Slab with Radiant Heat 3 Radiant Heat in Sub Floor 4Radiant Heat over Existing Sub Floor 5 Radiant Heat in Wood Floor Joist 6 Radiant heat in Snow Melt