Roofing membranes comprising pressure-sensitive adhesives and methods of using same

A method of installing a roofing system, the method comprising:

• providing a bituminous sheet having an upper surface and a lower surface, at least one of the upper and lower surfaces being bituminous;
• providing a cold-temperature pressure-sensitive adhesive (e.g., as described herein) having a first surface an opposed second surface;
• affixing a second surface of the cold-temperature pressure-sensitive adhesive to a substrate (e.g., a roof deck, a roofing base sheet, or a roofing membrane) or a superstrate (e.g., another roofing membrane), such that an opposed first surface of the cold-temperature pressure-sensitive adhesive remains exposable;
• and
• adhering the first surface of the cold-temperature pressure-sensitive adhesive to a bituminous surface of the bituminous sheet, to provide a roofing membrane having an average adhesion at the cold-temperature pressure-sensitive adhesive of at least 8 lbs/ft (117 N/m) at 2° C. as measured by a two-hour T-peel test.