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

Removing Limescale from Limestone Shower Tiles in Berkshire

This enquiry came from a theatre buff at a house in Sonning Eye near Reading who regularly hosted cast members playing at the local Mill Theatre. Five years prior he had a Limestone tiled wet room installed and unfortunately the floor tiles were laid unevenly and the fall on the tiles didn’t allow the water to drain off efficiently. The water would therefore tend to pool in the centre and overtime heavy limescale built-up and mould had also started to appear.

Limestone Shower Before Renovation Sonning Eye

Cast members staying at his house although grateful of the hospitality had often mention the state of the unsightly shower and so we were asked to pop round and see what could be done to renovate it and restore its appearance.

Shower Tile and Grout Cleaning

The first task was to remove the mould that had ingrained the Limestone, to do this I used Tile Doctor Duo Clean and scrubbed it into the tile with assistance from a steamer. I repeated this action three times, after each time I could see a visible improvement in the affected area and once it had lightened to a very faint grey, I knew that the next cleaning process to burnish the stone would see it disappear completely so left it at that.

Limestone Shower During Renovation Sonning Eye Limestone Shower During Steam Cleaning Sonning Eye

Next job was to remove the limescale build-up and re polish the Limestone tiles. I found the best way to do this was with a small hand-held machine, this allowed me to get into all the edges and groves that would have been impossible with a larger machine which would have struggled to cope with the uneven tiles.

Limestone Shower During Polishing Sonning Eye

I started with a 400-grit burnishing pad, but this struggled to cut into the years limescale build-up, so I switched this for 100-grit soft milling pad which did the trick. Once all the limescale had been removed it was time to rebuild the polish on the surface of the stone, so the process was repeated working through finer and finer burnishing pads 200, 400, 800,1500 and finally 3000-grit until the appearance of the Limestone was restored. This is quite a time-consuming process as the pad are quite small, additionally each pad is applied with water to provide lubrication which turns into a slurry that has to be rinsed off before applying the next pad. The result however is worth at as it really restores the polished appearance of the Limestone.
The last part of the cleaning process was to give the grout a quick clean I did this by scrubbing in Tile Doctor Pro-Clean along the grout lines with a grout brush, again rinsing off the slurry afterwards. Pro-Clean is a strong alkaline tile and grout cleaner that’s safe to use on natural stone.

Sealing Limestone Tiles in a Wet Room

The final task was to seal the Limestone and replace the worn mastic/silicon sealant around the edges. Usually I would leave the stone to dry out overnight but as it was a small area, I was able to thoroughly dry it out using a heat gun. Once dry two good coats of Tile Doctor Ultra-Seal were applied to provide on-going protection. Ultra-Seal is an impregnating sealer that works by occupying the small pores in the stone thereby preventing dirt from becoming ingrained, also it doesn’t change the colour of the stone in any way leaving a very natural appearance.

Last step before finishing was to apply a fresh application of white mastic sealant along the edges of the tiling to ensure a good seal and no leaks.

Limestone Shower After Renovation Sonning Eye

My customer was over the moon with the result as initially he thought he might have to have it replaced. He was so pleased in fact that he left the following feedback on the Tile Doctor feedback system.

“Excellent prompt and courteous service from Dennis who I cannot recommend too highly. After completion of the work a previously very tired looking wet-room looked better than it did when new.”

Limestone Shower After Renovation Sonning Eye

 

Source: Limestone Cleaning and Polishing Service in Reading, Berkshire