Epoxy Primer Grey is a two pack polyamide cured primer generally used for epoxy system on masonry surface and cement works. PROPERTIES Colour : Grey Finish : Matt Theoretical Coverage 6-7 m2/lit on masonry surface Spreading rate is theoretically calculated and can be effected by substrate preparation thinning and methods of application. Solids (volume) : 24�±2% Curing time : 3-6 hours at 25 �° C Full cure : 7 days Flash point : 25 �° C (ISO 367 â??83) Specific gravity : 1.00 when mixed A+B Pot life : 4 hours at 25 �° C Mixing ratio : 4 parts base"A" : 1 part hardner "B" Solvent : Epoxy thinner. High temperature will accelerate dry times and decrease pot life; lower temperature will lengthen cure times and slightly increase pot life. Normally Tollens Epoxy primer grey A+B mixing pot life is 4hrs.As a diluent use Tollens Epoxy thinner 15 â?? 25 %.