Emseal 25v Expansion Joint System
Long-term, economical, high performance seal for above-grade wall joints in concrete, brick, stone, etc. where black reveal or shadow-line effect is desired or in concealed conditions. It is a permanently elastic, high-density, open-cell polyurethane foam, impregnated with water-based, polymer-modified asphalt, compressed to approximately 25% of its uncompressed dimension. Supplied pre-compressed to smaller than joint size with additional self-adhesive on one face to aid installation, material is inserted into the joint and adhered to one side. It then expands to seal the joint. Sealing between the foam and substrate is achieved through a combination of the pressure-sensitive adhesive impregnation and the back pressure of the expanding foam. Material is installed flush or near to the surface as a primary seal. Rated for joint movement of + 25% of nominal material width.
