A1 Retarder can be used to extend the processing time of the Base material. Always add A1 Retarder to the A1 Liquid, limiting the amount used to a maximum of 2% of the total weight.
A1, the abbreviation for Acrylic One, is a two-component material consisting of a mineral powder and a water based acrylic resin. These bind in such a way that a strong material is created. A1’s potential use is wide-ranging and could effectively replace much GRG, GRC and GRP in many of the situations where those materials are now used.