TPO and Duro-Last roofing systems reflecting back most of the sun that hits them and then quickly emitting the small amount of heat they absorbs. Which can drop the open-air temperature of a shop or warehouse by 10 to 15 degrees. As for a building with A/C, electric usage can be reduced by as much as 10% to 20% in some cases. The TPO and Duro-Last Roofing Systems also has a 5-star energy rating, that means there are tax exceptions and rebates available in most states and cities. they also help with LEED certification.