APOC Weather-Armor® SB-1 Self-Bond® Roof Underlayment is your premium, all-purpose roof underlayment and leak barrier. Ideal for use under slate, shingles, wood shake, tile or other steep slope roofing materials, SB-1 Self-Bond® underlayment is engineered with high strength reinforcement, exceptional elasticity and a non-skid mineral finish.

APOC Weather-Armor® SB-1 Self-Bond® Roof Underlayment is a blend of highly flexible and elastic polymers, high strength glass reinforcement, performance grade bitumen and anti-slip mineral surfacing. It is easy to install and utilizes a split release film for easier positioning, faster installation and clean lines.