Ultra-Shield Roof Flash is a high viscous, trowel or butter grade enhanced polyurea-urethane formula that can be used in conjunction with a variety of liquid coatings and roof membranes. Designed to seal roof details, such as seams, penetrations and terminations, its low VOCs and fast moisture-cure properties also make it environmentally friendly. This durable, high-performing polyurea urethane is reflective and UV resistant, has excellent vertical hang and performs well under ponding water