ABSTRACT
Cold process roofing utilizes solvent-based adhesives and emulsions with reinforcing felts or fabrics to manufacture roofing and waterproofing membranes. It is an old technology that is hampered by economics. It obviously costs more to add solvents, fillers and fibers to asphalt to make roof coating and adhesives, or using high shear mixers to emulsify asphalt and water to make emulsions, than it does to sell the asphalt alone. This does not mean that cold process systems are not useful or valued. For example, the principal roofing systems for the Canadian military were all cold process. Cold process adhesives are currently being used to good effect to adhere the cap or top sheet in polymer modified roofing.
