Sika EMSEAL Backerseal (Greyflex)

Product Description

Backerseal provides watertight secondary sealing in applications: 1) behind conventionally installed liquid sealant and backer-rod or, 2) behind directly field-applied low-modulus liquid sealants.

• When installed with directly-applied liquid sealant, a binary sealant system (combination of two technologies with performance that exceeds that of the individual components) is created.
• Backerseal consists of P foam infused with EMSEAL’s microshpere-modified, hydrophobic acrylic.
• Backerseal is supplied in precompressed rolls in widths from 3 mm (1/8”) up to 25mm (1 inch) and in shrink-wrapped lengths (sticks) in widths from 30mm (1 1/4 inches) up to 250 mm (10-inches).
• Supplied precompressed to less than the joint size with a mounting adhesive on one side. It is inserted into the joint and adhered to one joint-face.
• It then expands to seal the joint.
• Sealing against the substrate is achieved through a combination of the pressure-sensitive adhesive impregnation, and backpressure from the expanding foam.