After the treatment of stone floors usually consists of crystallization or impregnation alone or a combination. Impregnation is a method that has gained high penetration in the United States, where it is used by the agency and several large hotel chains. Combining the methods gives many advantages: the crystallization makes the floor hard and the impregnation offers the stains resistance and repels water. Impregnation can be used on all types of natural stone floors including floor tiles. The technology is also effective on stone walls to protect against graffiti. We also work with impregnation of concrete floors and concrete surfaces see under the heading surface hardening.