IKO Ener-Air insulation board is a lightweight insulation made at a state-of-the-art ISO 9001-2015 registered manufacturing facility. A coated glass fiber facer is laminated onto the board top and bottom, making it breathable. IKO Ener-Air offers a thermal resistance of R6 per inch to improve the energy-efficiency of walls and ceilings. IKO Ener-Air achieves a higher R-value (RSI) than other types of insulation, thus achieving the same total R-value with a smaller thickness, helping to reduce construction costs and overall building footprints. HCFC-free.