Restoring Limestone Shower Tiles Stained with Limescale

Limescale deposits are a big problem in many parts of the UK where hard water is common. To remove it you need to use a strong acidic cleaner however what to do if you have limescale deposits on Limestone? As many may already know, Limestone is an expensive, high-quality stone that like a lot of natural stone is acid sensitive and can be damaged with the application of acid-based products. You can use acids on Limestone however if your careful and I demonstrated this recently at a property in this village of Everdon near Daventry in Northamptonshire. My customer had a fantastic black Limestone tiled shower cubicle that had been absolutely ruined by white limescale staining and it had reached the point where the situation simply couldn't be resolved with standard cleaning products.

Cleaning and Burnishing a Stained Black Limestone Shower Cubicle

As the staining was so severe, I opted to use Tile Doctor Acid Gel to clean the tiles. This is a blend of phosphoric and hydrochloric acids in gel form and is the best product for cleaning vertical services, since water based products just run off and don’t have time to work on the staining. Working in small areas, I carefully scrubbed the product into the stone and then rinsed it off with plain water. This process was repeated across the whole cubicle, reducing the stains significantly in the process. Next, I used a handheld polishing machine fitted with 6” diamond encrusted burnishing pads, along with some water for lubrication, to polish and deep clean the stone, removing any stubborn stains remaining on the tiles.

Sealing a Black Limestone Shower Cubicle

I left the cubicle to dry completely overnight. Upon my return the next day, I proceeded to seal the tiles using two coats of Tile Doctor Colour Grow sealer. This sealer is impregnating, meaning it fils the pores of stone to protect against ingrained dirt and staining. As well as providing stone protection, Colour Grow also enhances the natural colour in the stone - in this case, the deep black shades in the Limestone. Having finished the job, I gave the very happy customer some advice on keeping limescale and other staining at bay in future. I explained that proper maintenance can be conducted by simply rinsing the tiles with clean water after each use of the shower, and by using Tile Doctor Aqua-Pro tile aftercare cleaner at least once a week.


Source: Limestone Cleaning and Maintenance Service in Northamptonshire