Renovating a Black Limestone Patio in Walgrave


The following photos show a large black limestone patio that had been installed at a house in the village of <b Walgrave by a local builder who had sealed the stone before cleaning it first. Doing so trapped the dirt and grout smears (ka grout haze) underneath the sealer which resulted in a hazy appearance that could never be cleaned off.

Black Limestone Patio Before Cleaning Walgrave

Spring is an ideal time to work on patios which tend to get stained most from leaves and other detritus during the windy autumn and then ravaged by the winter frosts. If you want to seal the stone though its best to wait until a spell of continuous hot weather for the best results.

Black Limestone Patio Before Cleaning Walgrave

Cleaning a Black Limestone Patio

To clean the stone, I would first need to remove the builder’s sealer, so I started by applying Tile Doctor Remove & Go which is a strong product designed to safely remove coatings such as sealers and paint from stone and tile. A strong dilution of Remove and Go was applied to the floor and left to soak in for about ten minutes before being worked into the Limestone using a black scrubbing pad fitted to a rotary floor scrubbing machine. The soiled cleaning solution was then rinsed off the patio with water and extracted using a wet vacuum.

Black Limestone Patio During Cleaning Walgrave

With the sealer removed along with the dirt then next task was to tackle the smears of grout that had been left on the surface of the stone. To do this I applied a specially developed product called Tile Doctor Acid Gel which is left to dwell on the surface of the stone just long enough to weaken the unwanted grout which can be then scrubbed off. The solution is then rinsed off the patio and extracted as before. This process was done in sections worked across the length of the patio and then when finished it was given a through rinse.

Sealing a Black Limestone Patio

I would need the limestone patio to be dry before sealing so I left it fully dry out over the course of a few days before coming back to finish off, fortunately the weather was good, and it wasn’t long before I returned.

Black Limestone Patio During Sealing Walgrave

My sealer of choice for Black Limestone is Tile Doctor Colour Grow, it’s an impregnating sealer the penetrates the pores of the stone protecting it from within and simultaneously enhancing the natural colours in the stone. This product is also fully breathable which makes it ideal for external use or damp areas where moisture needs to rise through the stone and evaporate. Two coats of Colour Grow were all that was required to fully seal the stone.

Black Limestone Patio After Cleaning Walgrave

The work was a huge improvement to the look of the patio which is now vibrant, inviting and fully transformed by the process.

Black Limestone Patio After Cleaning Walgrave

 

Limestone Patio Maintenance in Northamptonshire



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Acid damaged black limestone patio tiles in Bromsgrove


A local company in Bromsgrove were commissioned to lay a stunning and expensive Black Limestone patio for a customer who was renovating their property. Unfortunately, the company tried to clean the finished patio with brick acid, and because limestone is generally very porous and acid sensitive this discoloured the tiles to a rather unsightly, dull grey – a far cry from what their customer was expecting!

Acid Damaged Black Limestone Patio Before Restoration Bromsgrove

The company facing a large bill contacted Tile Doctor for expert advice to see if the beautiful tiles could be restored. If Tile Doctor couldn’t come to the rescue, then the company would have no choice other than to replace them at their own expense.

Acid Damaged Black Limestone Patio Before Restoration Bromsgrove Acid Damaged Black Limestone Patio Before Restoration Bromsgrove

Black limestone paving has become incredibly popular over the last few years as its dark tones suit the current trend for a monochrome palette. It is also hard wearing and readily available.

Tile Doctor specialise in the restoration of all types of tile and stone and as their local agent, I was asked to go over and see what could be done. I realised that the brick acid will have damaged the surface of the stone so to restore it I first tried applying a coarse 200 grit diamond burnishing pad. The pad successfully demonstrated that the appearance could be restored and impressed with the difference the site foreman booked me in to complete the whole patio. Luckily the weather forecast was set fair for a few days, which would be needed to clean and seal the patio.

Restoring an Acid Damaged Limestone Patio

Made with industrial diamonds and available in different sizes and grits, burnishing pads are ideal for restoring the appearance of polished stone floors. The first step was to work on the tiles with a course 200 grit diamond pad fitted to a weighted rotary machine and lubricated with water. This took off a layer of the limestone, bringing back the original black appearance of the tiles.

Acid Damaged Black Limestone Patio During Diamond Pad Polishing Bromsgrove Acid Damaged Black Limestone Patio During Cleaning With CRB Machine Bromsgrove

Next the patio was worked on with 400 grit diamond pads followed by 800 grit pads – the first stage of polishing – and each application was cleaned off with water. Because the property was being renovated there was a lot of dirt on the tiles and grout from construction, so I scrubbed in medium dilution of Tile Doctor Pro-Clean using a CRB (counter rotating brush) machine. Once done I rinsed down the area with more water and left it to dry. As you can see from the pictures it was a large area, so this work took two days to complete.

Acid Damaged Black Limestone Patio During Cleaning Bromsgrove

Sealing Limestone Patio Tiles to Restore Colour

I returned the next day to start the sealing process beginning with the application of Tile Doctor Stone-Oil which restores the deep black colour and texture to the limestone, it’s also an impregnating sealer that adds protection and improves mechanical strength once cured.

I allowed this to dry for 24 hours and then applied a coat of Ultra-Seal, a no-sheen natural-looking sealer formulated to provide maximum stain protection.

Acid Damaged Black Limestone Patio After Sealing Bromsgrove

The customer was very happy with the results. The patio tiles were fully restored to their original glory and their customer was delighted. More importantly, the company had been saved from making an insurance claim. They left the following feedback on completion:

“Great job by Kieron after the wrong cleaning solution was used on a patio we installed. Came up better than new!”

Acid Damaged Black Limestone Patio After Restoration Bromsgrove Acid Damaged Black Limestone Patio After Restoration Bromsgrove

 
 

Professional Restoration of a Black Limestone patio Near Birmingham



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