ROCKRITE® Composition
The units of Rockrite® are formed of a cement/polystyrene material that is made of 100% recycleable materials. This cement- polystyrene material contains Portland cement, fly ash, EPS beads, polymer fibers, EPS foam sheet and other additives and aggregates. Rockrite is a nail able, screw able backer board or underlayment panel that has a significant ability to remain unaffected by prolonged exposure to moisture.
Rockrite's system of lightweight cast units makes them easy to modify, cut, and transport without compromising strength or durability.
Materials for installation:
- Joint Reinforcement, Use 2” wide polymer-coated alkali-resistant mesh tape.
- Bonding Materials for joint treatment and to set facing material, use latex modified mortar. All mortars should comply with ANSI A118.1 or A118.4 standards.
- Fasteners use galvanized roofing nails, 2 ½” long or Concrete Backer board screws 2 ¼” long. Nails should meet Federal Specifications #FF-N105B/type 2 style 20 or equivalent.