Our streetscape GPM laser gun pointing mortar is designed for use on sawn natural stone. It is made up of cementitious coloured powder. This grouting will take 4 hours to cure at a temperature of 20 degrees celcius and has a working time of 40 minutes at the same temperature. Our patio grout has a shelf life of six months provided that it is stored in a dark, cool and dry location, away from extreme temperatures.To see which colours of paving and stone wall cladding that this grout is compatible with, check out our grout compatibility guide.