Ice & Water Shield - SBS Modified Roofing Underlayment - LAMA ULLAMA UL is a self adhesive roofing underlayment designed for sloped roof decks, providing superior protection against ice and water intrusion. It is constructed with a fiberglass carrier coated in SBS polymers, asphalt, and additives for enhanced flexibility and durability. The top surface features a sand layer, while the bottom has a siliconized split release film for easy application. It effectively protects against ice dams on roof rakes, eaves,