Ideal material for spandrel insulation in glass facade buildings shield is a non-fibrous, fire retardant (FR), closed cell; crosslinked polyethylene foam. It is an ideal environment friendly material, used for spandrel insulation in glass facade buildings. shield effectively blocks the heat percolated from the glass facade to enter into the spandrel area, thus maintaining uniform temperature balance throughout the building and conserving energy. ‘shield’ is a better substitute to Glass Wool.