BOSS 231 CLEAR is a plasto-elastic, paintable, one-component repair sealant based on copolymers, BOSS 231 has excellent adhesion on bitumen, asphalt, hardened concrete, metal, glass, brick, wood and plastics including Kynar 500*. BOSS 231 is also suited for wet, non-absorbing surfaces, and is ideally suited for waterproofing cracks in roofs, gutters, skylights, chimneys, walls, etc. BOSS 231 is resistant to U.V. exposure and temperatures up to 200°F. BOSS 231 is a fast repair product for leaks in gutters, drainpipes, and can be used in implementing emergency repairs, even in rain, and as a sealant at cracks and seams.