Mile High Foam XL™ is a resilient, cross-linked polyethylene backer rod used as a backing material for hot and cold applied sealants. Due to its chemical make up, it can take high temperature sealant installations. Mile High Foam XL™ controls the depth of the sealant installation and ensures cross-sectional hour-glass configuration. No bond breaker is required. Product has been tested and passed the heat resistance requirements of ASTM D 5249 at a certified independent laboratory.
For use in highway joints, parking decks, runways, driveways, parking lots and saw cut expansion joints.
Do not puncture, over compress or stretch Mile High Foam XL™ during installation.
Composition and Materials:
Mile High Foam XL™ is a round, light brown, resilient, extruded cross-linked closed cell polyethylene backer rod with a water resistant outer skin. It is compatible with most known hot and cold applied sealants such as rubber asphalt, coal tar-rubber polymer thermoplastic compounds, urethane, silicone, acrylic, butyl, polysulfide and latex.
Mile High Foam XL™ is chemically inert and will resist gasoline, oil, and most solvents. Product will not stain or adhere to sealants.