... . Roof work, guttering system, sheets laps, opening in brick and concrete surface 2.Seal eaves gutter of steel structure. Composition:The anti ... by Isobutylene isoprene rubber,plus with other filler such as anti-aging agent, soften agent, and reinforcementagent. The product can be ... steel work rear air steel to drain joint system.3. Roof work, guttering system, sheet laps, opening in brick and ...