We use sealers, impregnators and further special products in various combinations to achieve the desired finish and protection.
During the manufacturing process the concrete develops its own unique patina and will never be featureless with one continuous colour. Also pinholes can form which we generally fill for top surfaces which are "in service". However on edges of products we often leave pinholes at the client request to give a more industrial appearance. Once sealed and polished we love this look, but of course the customer is always right!