Jetcem is a specially formulated rapid setting cement based patchingrepair compound which when mixed with water sets in about 30 minutes rapid setting 30 minutes depending on ambient temperature and conditions easy mixing just add water fills up to 25 mm in one application for deeper holes in excess of 25 mm use jetcem premix sandcement benefits internal and external repairs to gaps and cracks and walls and floors repairing flags slabs stones and bricks patching steps and window sills pointing b