Removing Mould from Limestone Shower Tiling

I was asked to look at renovating a shower cubicle at a property in in Manchester city centre that had been clad in White Limestone tiles. I understood the bathroom had been installed 12 years prior, but now the tiles were looking grubby, mouldy and dirty.

Limestone Tiled Shower Cubicle Before Mould Removal Manchester City Centre Limestone Tiled Shower Cubicle Before Mould Removal Manchester City Centre

The client had lived at the property for the last two years and in an attempt to resolve the problems had used a few different household products such as flash and bleach, they had tried everything, and nothing had helped. I suspected that these strong acidic cleaners had actually made the problem worse by stripping off what was left of the sealer that was protecting the Limestone, allowing dirt to become ingrained in the stone.

I visited the property and ran a few cleaning tests in the shower cubicle with Tile Doctor products. This allows me to see which product will have the best results and gives the customer confidence that we can resolve their issues. The results were immediate, they could see the difference and they were happy to accept my quote and agree a date for my return to complete the work.

Removing Mould from a White Limestone Tiled Shower Cubicle

I arrived several weeks later and made a start. The tiles were scrubbed by hand with a strong dilution of Tile Doctor Remove and Go with excellent results. This product is designed to remove coatings and sealers, and in this case, it did a great job of drawing out the ingrained stains and dirt build-up. This removed what was left of the sealer and took off most of the dirt and mould. The Limestone tiles and grout were then rinsed with water to remove the soil.

Next I needed to restore the smooth surface of the limestone which had been etched by the use of strong acidic cleaning products. To do this I used a set of six-inch diamond burnishing pads attached to a hand buffer to hone and restore the stone.

I then dried the shower tiles and grout with a heat gun checking the moisture levels with damp meter until I was satisfied it was completely dry.

Sealing a Limestone Tiled Shower Cubicle

The last step was to re-seal the Limestone and Grout using a couple of coats of Tile Doctor Colour Grow. This is natural coloured intensifying sealer which provides durable protection to the surface allowing it to breathe and enhancing the colours.

The Customer was amazed with the difference and left the following feedback!

“Kamila was friendly, professional and kept me informed about what to expect before she took on the job and during the tile cleaning. The tiles look absolutely amazing after her work – I feel as though I have a brand new bathroom! Kamila also gave me helpful tips on looking after limestone tiles. I can’t recommend her highly enough.”

Limestone Tiled Shower Cubicle After Mould Removal Manchester City Centre Limestone Tiled Shower Cubicle After Mould Removal Manchester City Centre

For future cleaning I recommended the use of Tile Doctor Aqua-Pro which is a pH neutral shower tile cleaner designed for use on sealed surfaces. Most cleaning products you find in supermarkets are overly strong and will erode the sealer prematurely, so when choosing a cleaning product always read the label and make sure it’s safe to use on Sealed Stone tiles.

 

Source: Limestone Tile Cleaning and Renovation Service in Manchester

Deep Cleaning White Limestone Tiles in a Oxfordshire Kitchen

Photographs below of a White Limestone tiled kitchen floor at a house in Wallingford that was proving difficult for the owner to clean effectively. I went around to inspect the floor and could see that the sealer had worn off leaving the tiles vulnerable to dirt becoming ingrained in the pores of the stone. Once this happens it makes the job of keeping the floor clean quite difficult as you really need to get the dirt out of the pores of the stone to do it right and of course once you do dirt will soon become trapped again without a sealer in place.

Given these Limestone tiles were White the dirt was more visible than usual, so the customer was keen to have the floor deep cleaned to remove the ingrained dirt and then sealed to prevent the problem reoccurring.

White Limestone Floor Wallingford Before Cleaning White Limestone Floor Wallingford Before Cleaning

Cleaning White Limestone Kitchen Floor Tiles

To restore the floor back to its original condition I used a set of burnishing pads which are encrusted with industrial diamonds and come in different grades from coarse to very fine. Applied with a little water the coarse 400 grit pad is designed to strip the floor of dirt and old sealers whilst the remaining pads which are a finer restore the polished surface. Between each pad you need to rinse the floor with fresh water which is removed with a wet vacuum before finally being left to dry overnight.

On this occasion I found when I started with the 400 grit pad it wasn’t having the effect I was expecting and quickly established that this floor would need grinding back with a much coarser milling pad first. Fortunately I have numerous different types of pads available and was able to switch to a 50 grit milling pad which not only got rid of any remaining seal but also grinded out the ground in dirt. This does leave the stone in a rough condition so to restore the final finish I followed up with the 400 and 800 grit pads and finished with the 1500 grit pad, rinsing with water between each pad to remove the soil that is generated. It was quote a large floor, so it took two days to complete the process over every Limestone tile.

Sealing White Limestone Kitchen Floor Tiles

To seal the floor, I used Tile Doctor Ultra Seal which works by impregnates the stone occupying its pores and thus preventing dirt from becoming ingrained in there. This particular sealer doesn’t change the appearance of the stone and so leaves it with a natural look. Again, it was a large area, so it took two days to apply two coats. I then returned on day 5 to go over the whole floor with a 3000 grit polishing pad to give the floor a slight sheen.

White Limestone Floor Wallingford After Cleaning White Limestone Floor Wallingford After Cleaning

 
 
Source: Limestone Tile Cleaning and Renovation Service in Oxfordshire