Re-insulate your existing home or office with RetroFoam™. Replace old, ineffective insulation in your home or office. Add insulation where none exists. With its extremely high R-values (up to R-23.7), RetroFoam™ is the most efficient and cost-effective choice for insulating existing buildings. RetroFoam™ injected foam insulation can save you up to 50% on your energy bill! With heating and cooling costs rising beyond belief, you can't afford to wait another day to re-insulate your home or office with RetroFoam™.