Polystyrene pipe insulation is a foam insulation used in both residential and commercial applications. Polystyrene insulation is very rigid and can withstand a range of temperatures while providing excellent noise reduction. This insulation is waterproof, helping to manage energy and moisture issues that can compromise the performance and integrity of a structure. Polystyrene pipe insulation is available in board, curved segments, elbows, pipe coverings, and tees. DI has fabrication facilities across North America that can create custom polystyrene insulation products to fit your project needs. View our selection of polystyrene insulation by category below!