Xypex Admix C-500 NF and the Xypex Concentrate coating system were chosen above traditional methods of waterproofing, such as membranes, due to Xypex’s unique and effective crystalline technology. Xypex Admix is blended into the concrete mix at the time of batching to waterproof and protect concrete from the start and has been proven to outperforms other methods; it becomes an integral part of the concrete matrix.