HG natural stone cement & lime film remover (product 31) is acid-free and therefore safe for removing cement and limescale residues from marble and other calciferous natural-stone types. For example travertine, bluestone or hardstone. The product is also suitable for concrete tiles and synthetic tiles that contain pieces of natural stone, such as granito and marble composite.

Dissolve half a litre of HG natural stone cement & lime film remover in half a bucket (5L) of water. First wet the surface with clean water and then apply the solution using a floor cloth or mop. Do not treat more than 10 to 15m² at a time. Then scrub the surface well with a stiff broom or scrubbing brush. Leave to work for 5 minutes and then scrub again. Then remove the solution from the surface with a mop, and mop the floor again with clean water.