Slate Floor Cleaning at a Central London Office

I was asked by a building company to look at some slate flooring that was laid during a refurbishment to the offices of a German television station based in central London. The architect was not happy because there appeared to be some grout haze and some grout along the ridges that you get in slate. I carried out a demonstration to the building manager and she was pleased with the result and we were awarded the job. Because of the nature of the business I had to do the job out of hours, Read more...