In a hurry? Get Pot-Cem Rapid-Set. Sets in only 30 minutes and can be used for depths up to 150mm when using the new Pot-Cem Rapid-Set Sand & Cement and up to 25mm when using the new Pot-Cem Rapid Set Cement. Arc Pot-Cem Rapid Set is formulated for rapid repairs to holes, gaps and cracks in concrete, stone, brick and most masonry surfaces. Ideal for internal and external repairs to steps & window sills, pointing brick & stone, setting posts & sanitary ware, repairs to ponds & pools and the bedding & patching of paths, patios and blocks. Quick Repairs & Patching? DONE!