PVC roofing, on the other hand, is more expensive than EPDM roofing, and for good reason. For instance, the plastic content is much more resistant to puncturing. PVC, on the other hand, uses heat-welded seams rather than softer roofing tape, resulting in better waterproofing. If you’ve ever had to deal with pipe leaks and water damage, you know how important leak prevention is for your roof. Finally, the white surface of PVC is much more energy-efficient. PVC is the obvious winner if you want to save money on heating and cooling.