Easy to handle and install, GreenGuard GG300, GG500 & GG700 is a rigid extruded polystyrene insulation, with a fibre-free core, compatible with green roof systems. Suitable for use as slab edge insulation, Kingspan GreenGuard is a non-deleterious material and is resistant to the passage of water vapour. An ideal insulation for inverted roofs, basements, car park decks, and heavy duty commercial, industrial, and cold store flooring.