Only applying waterproofing paints will not solve your problem. It needs detailed investigation to find out the actual cause. If there are any cracks, it needs to be determined, in the first place, as to why cracks have developed in the walls. A well designed and constructed structure should have no reason to developed cracks. If the cracks are larger and there is some doubt the structural design then show the wall first to a local structural engineer to rule out any structural inadequacies. However if the cracks are small and there is no problem with structure and if the consultant recommends use of a flexible crack-filling compound then CRACKSEAL can be used for filling the cracks. Once cracks are filler, clean the surface and apply WATERGUARD S in the two coats at an interval of 4-5 hours. It is an acrylic based elastomeric coating that has been specially formulated for external heavy duty waterproofing applications. It is UV resistant, durable, ready to use and can be tinted to match the shade of your building. It is important that, if the cracks exist on the surface above your floor then they also need to be treated.