Nitomortar PE products are based on a polyester resin system. There are two grades: Nitomortar PE - for general purpose use; Nitomortar PE Concrete - a special grade allowing users to add suitable aggregate, thereby substantially reducing the cost of infilling larger voids. Winter versions of both products are available which are faster setting at low ambient temperatures. Both grades of Nitomortar PE are supplied as two-component products with pre-weighed quantities of liquid resin and powdered hardener, ready for on-site mixing and use. The hardener system enables the mix to be varied from a pourable consistency to a trowellable mortar without significantly affecting the setting times or strengths achieved. This makes the product extremely reliable in use.