Limestone tiled floor Damaged by Citric Acid Restored in a Wokingham


The photographs on this page show the spot restoration of an acid damaged newly installed Limestone tiled floor at a medieval cottage in the historic town on Wokingham, Berkshire. It seems the customer accidentally spilled lime cordial on honed surface leaving dull stain spots on about six to eight tiles.

Acid Damaged Polished Limestone Floor Wokingham Before Restoration

After attempting to remove the damage themselves using a variation of different sealers the customer accepted defeat and contacted Tile Doctor to see if the issue could be resolved. If not, they were considering replacing the floor.

Acid Damaged Polished Limestone Floor Before Restoration Wokingham

Being the local Tile Doctor for the area I was asked to take a look and advise the customer. I explained that the dull spots had appeared because the surface tension of the limestone had been damaged from the citric acidic in the cordial. The affected tiles would essentially need to be re-polished; the customer was eager to see if I could resolve the issue and get all the tiles to be as uniform as possible.

Spot Polishing a Limestone tiled floor

My first task was to identify which tiles needed re-polishing with burnishing pads as once I got going it would be tricky to spot them; I did this by simply leaving post it notes on the affected areas.

Acid Damaged Polished Limestone Floor Wokingham Before Restoration

To restore the appearance of the Limestone tiles I started with a 400 grit 3-inch pad fitted to a handheld flex machine. You can’t actually buy these 3 inch pads, they are found in the centre of the large 17 inch floor pads. The 400-grit pad is quite abrasive and needs to be applied with water to lubricate. I then followed the 4-stage burnishing process increasing the surface tension with each pad used this to leave the tile with a good sheen and most importantly a uniform appearance with the surrounding tiles.

Acid Damaged Polished Limestone Floor Wokingham During Restoration

The Burnishing pads are actually loaded with industrial diamonds and you apply them in sequence starting with the coarse 400 grit pad before moving onto the medium 800 grit pad, fine 1,500 grit pad and then finally the super fine 3,000 grit pad which really brings up the shine. You have to rinse with water between each pad to remove the slurry that is generated. The final 3,000 grit pad is applied with very little water and so the floor is dry when completed.

Spot Sealing a Limestone Tiled Floor

The last step was to carefully re-seal the tiles that had been burnished so they would blend in with the rest of the floor. I decided on Tile Doctor Ultra-Seal for this, it’s an impregnating sealer that doesn’t alter the colour of the stone leaving them with a natural look.

The process went well and was completed in around four hours, my customer was very happy with the result and left the following testimonial on the Tile Doctor feedback system

“We felt very comfortable with the recommended course of action and Mr Buckland inspired confidence so we were happy to let him get on with the remedy.”

Acid Damaged Polished Limestone Floor During Restoration Wokingham
 
 

Spot Treating Acid Damaged Limestone Floor Tiles in Berkshire



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Dull Sandstone Kitchen Tiles Revitalised in Quarry Bank Mill


Quarry Bank Mill is an old textile mill just outside of Wilmslow in East Cheshire that dates back to the Industrial Revolution when it was used to produce cotton. The mill is now under the care of the National Trust who recently put together a £9.4 million project, supported by the Heritage Lottery Fund the further restoration of the mill and its gardens.

The 18th century mill is now a popular attraction and I was recently asked to clean and seal the Sandstone flooring in the Kitchen of the head gardeners cottage. The cottage is actually located in the formal gardens which were recently visited by HRH Price of Wales.

Sandstone Kitchen Floor Tile Before Cleaning Quarry Bank Mill Cottage

The Sandstone Kitchen floor was in good physical condition so unlikely to be the original however like any stone floor in constant use the sealer was wearing off and dirt was becoming ingrained in the pores of the stone detracting from its overall appearance.

Sandstone Kitchen Floor Tile Before Cleaning Quarry Bank Mill Cottage

Cleaning Dirty and Dull Sandstone Flagstones

Our first job was to protect the wooden kitchen units and other woodwork with tape. Next I set about cleaning the Sandstone and stripping any reaming sealer off in the process. To do this I applied a strong dilution of Tile Doctor Remove and Go, which is multi-purpose stripper and cleaner. The product strips away any old sealer on the tiles and draws out ingrained dirt, stains and heavy grease build-up.

I applied the product and left it to soak for roughly fifteen to twenty minutes to allow time to break down the old sealer and penetrate the pores of the stone to reach any embedded dirt. Next, I scrubbed the floor using a specialised buffing machine fitted with a black scrubbing pad swelled with water to get the stone clean. The resulting dirty cleaning slurry was quickly soaked up using a wet vacuum and after rinsing with water With the floor clear I was able to spot stubborn areas that need more work and repeated the process.

With the stone clean I turned my attention to the grout lines and scrubbed in a strong dilution of Tile Doctor Pro-Clean which was then rinsed off with water. I then completed another spot check of the floor whilst using the wet vacuum to get the floor as dry as possible. With the cleaning part of the job complete I left for the day to allowing the floor to dry off fully overnight.

Sandstone Kitchen Floor Tile After Cleaning Quarry Bank Mill Cottage

Sealing Sandstone Kitchen Tiles

Upon returning to the property the following day, I tested the floor with a damp meter, checking for any excess moisture that could prevent me from sealing the stone. The floor proved dry and so I began to seal the Sandstone starting with a single coats of Tile Doctor Colour Grow. Colour Grow is an impregnating sealer that is designed to fill the pores of the stone blocking dirt from becoming ingrained there whilst enhancing the natural colours in the stone at the same time.

Once the Colour Grow was dry I followed with the application of five coats of Tile Doctor Seal and Go which is a compatible water-based acrylic sealer which provides both a stain resistant surface seal and a durable low-sheen finish.

Sandstone Kitchen Floor Tile After Cleaning Quarry Bank Mill Cottage

The floor now looks much healthier and the new sealer show keep it looking that way for some years to come.
 
 

Professional Renovation of a Sandstone Tiled Floor in Wilmslow



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