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

Restoring an Acid Damanged Wet Room Floor in London

All carbonate materials, including those used in building and construction, are sensitive to acid deposition. A common example of this is the reaction that occurs when you combine bicarbonate of soda and vinegar. Another example of a material affected by this is Limestone, which is often used as tiled flooring. When exposed to acidic products, the damage caused to Limestone tiles is both material and aesthetic, and many property owners who suffer this kind of damage assume that they are beyond repair.

I was recently called to a property in Wapping, Central London, to take a look at a damaged Limestone tiled floor situated in a wet room. The surface of the stone had suffered heavily from corrosion due to the spillage of an acidic solution and the property owner was keen to see what could be done to restore the condition of the tiles. He had been told by another company that the floor was beyond repair, but I knew that with the right products and techniques that I could provide a full restoration.

Limestone Floor Damaged by Acid Before Restoration Wapping

Cleaning and Burnishing Acid-Damaged Limestone

My first attempt at reducing the acid stain was to apply Tile Doctor Reduxa, which is formulated to remove or significantly lighten stains caused by acidic beverages such as cola and white wine, as well as acid-based household cleaners.

I followed this by rinsing the tiles with water rinse and applying Tile Doctor Pro Clean solution, a high alkaline product that would neutralise the acid and stop it from causing any further damage. After leaving the Pro Clean to dwell on the Limestone for ten minutes, I used a handheld rotary buffer fitted with a small black scrubbing pad to remove any dirt, soap scum, and excess old sealer from the tiles and grout lines. Next, the floor was carefully rinsed with water to make sure no chemical residue remained from the cleaning products.

Although the situation was significantly improved, the stain remained visible, so the next step was to re-surface the tile using a set of diamond encrusted burnishing pads of different grades. I started with a Coarse grit diamond encrusted pad to grind away the damage layer of stone, and followed this by applying Medium, Fine and Very Fine pads to slowly hone and polish the floor, back to its original condition.

Sealing Limestone Tiles

I left the tiles to dry completely overnight before returning to the property the next day. With the acid stain removed, it was time to re-seal the floor using Tile Doctor Colour Grow, a colour- enhancing, impregnating sealer that is particularly effective at boosting the appearance of Limestone.

Limestone Floor Damaged by Acid After Restoration Wapping

The result was very satisfying for both myself and the customer. In fact, the customer even when so far as to leave the following feedback on the Tile Doctor Feedback System.

“Didi is indeed very knowledgeable and professional. I was more than a little worried by Limestone corrosion due to accidental spillage of a corrosive substance in our wet room. Didi came to sort it out for us and what to the layman looked like a catastrophe and possible new tiling operation was expertly repaired by Didi and his team. Our wet room now looks like new, much better than before in fact, and we are very grateful to Didi and also Tile Doctor for being able to head straight for the problem and sort it out so efficiently. Highly recommended!”
 
 
Source: Limestone Floor Cleaning and Restoration in in London