Over time as a result of aging and other factors such as the the original installment of the grout, climate, temperature, etc. your grout may begin to crack. With the right tools and direction, it is possible to repair these minor damages in the grout on your own. This guide will provide you with the instructions and tools to repairing these cracks in the grout. The tools listed in this guide are not common household items and can either be bought or rented. They are recommended to be used with protective gear such as protective eye wear, gloves and a mask.