Kingspan GreenGuard® Type IV XPS Insulation Board will be replaced by GreenGuard® GG25 LG XPS, with a minimum compressive strength of 25 psi. It has high water resistance and an R–value of 5.0 per inch of thickness. It retains its insulating properties over time. Use this insulation for below slab, cavity wall, and foundation applications. It is available in a square edge board, ship–lap edge board, pre-cut 16-inch wide board, and a score board.