RockWeb is a TSL or Thin, Spray-on Liner engineered for the stabilisation of irregular rock structures.  It is capable of spanning gaps in the rock mass due to its unique ability to be sprayed in a "cobweb" like consistency. 
Made from a material called Polyurea, it has no solvents or water to evaporate.  It is a 2-component reactive mixture similar to polyurethane or epoxy  that can be sprayed on dry to reasonably damp surfaces  
How Does It Work?
How Is RockWeb Applied?
Where Is It Used?