Removing Grout Smears from 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 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

 

Source: Limestone Patio Cleaning and Renovation Service in Walgrave, Northamptonshire

Restoring Colour to Slate Patio Pavers in Berkshire

Details below of a job I completed earlier in the summer in the Berkshire town of Thatcham which is just east of Newbury. The customer had a lovely Slate Patio installed the year before which had not been sealed by the builder and it had since become dull, light grey and unpleasing to the eye. Additionally there was a haze on tiles from sand and cement that had been used to point between the paving which the customer couldn’t remove.

Exterior Slate Before Renovation Thatcham

I first went round there to take a look at the job and work out a price; we often get asked to quote over the phone but it’s really difficult to do that without look at the job as you never know how things are going to work out unless you do a test clean. In this case I was able to demonstrate the process to the customer on one of the paving tiles which you can easily pick out in the photographs below.

Exterior Slate Before Renovation Thatcham

Happy with the demonstration I was given the job to do the whole patio so I arranged to a date to come back and do the work.

Cleaning Slate Patio Paving

On my return the first job was to tackle the sand and cement haze that was covering much of the slate patio. Fortunately for me the builder had not sealed the tiles so this was just a straightforward case of applying a solution of Tile Doctor Grout Clean-Up, leaving it to dwell for ten minutes and then scrubbing it into the paving with a mechanical scrubbing machine to release the sandy haze as well as breaking down the soils on the tiles.

You should be aware that Grout Clean-Up is an acid based product and Slate like most natural stone is acid sensitive so it’s important to remove it as soon as its done its job and rinse down the stone with water soon after.

To rinse the slate patio I used our specialist truck mounted systems which gently blasts the soils from the stone with hot pressurised water whilst simultaneously recapturing the waste back into a tank on the van. This action also neutralises the stones which is important before applying sealer. The Slate pavers were then allowed to dry and being a very hot day this only took a couple of hours.

Sealing a Slate Patio

After a long lunch I returned to find the Slate was dry but still looking rather grey so to restore the natural dark colours to the stone I applied a coating of Tile Doctor Stone Oil then after approximately 1 hour any excess stone oil was buffed off the tiles leaving it to fully dry off overnight.

The following day I returned to apply two liberal coats of Tile Doctor Ultra Seal which is a solvent based no-sheen, natural-look penetrating sealer that will provide the needed protection from the elements and make it easier to clean in future.

Exterior Slate After Renovation Thatcham

My customer was very pleased with the final results and left the following feedback on the Tile Doctor feedback system.

“I had my patio and path cleaned and sealed. The service from the whole team has been exemplary from start to finish and I am delighted with the work that has been carried out. My particular thanks to Dennis who was friendly, helpful and exceptionally professional. He explained everything he was going to do and why, kept me informed throughout and worked really hard to produce a fantastic finish on my patio and path. I’m really grateful and will most definitely be recommending to friends. Thank you”

Exterior Slate After Renovation Thatcham

 
 
Source: Slate Patio Cleaning and Restoration Service in Berkshire

Maintaining a Slate Tiled Patio at House in Brighton

Brighton is a great location to work with a huge variety of property styles and tile installation but being such a popular location parking can be an issue. We need to park our van physically close to the property so we can make use of our powerful Truck mounted cleaning system that weighs in at 3/4 of a tonne! It’s a really clever system that uses water under very high pressure to clean the stone whilst at the same time recovering the waste back to a storage tank in the van making it a very clean operation even in the most awkward conditions.

I thought I would mention this first as I was asked to deep clean and seal the lower ground level Slate tiled courtyard patio at this property in Brighton which was located down a small side street where people rarely moved their vehicles due to lack of spaces available. Fortunately I was aware of the issue and managed to overcome it by arranging a parking suspension with Brighton and Hove City Council allowing me to park my van.

Slate Patio Courtyard Brighton Parking Suspension Slate Patio Courtyard Brighton Before Cleaning

This patio was open to the elements and was also used by the owner’s dog. Further due to its inaccessibility it had never been cleaned apart from with the general hosepipe sprayer. Any kind of porous stone will over time become dirty and stained if the sealer is not maintained, sealers do fail eventually and usually in the highest traffic areas first where they become worn down the most.

Slate Patio Courtyard Brighton Before Cleaning Slate Patio Courtyard Brighton Before Cleaning

Deep Cleaning Dirty Slate Patio

The first job was to pressure clean the entire area using the truck mounted system I mentioned earlier, it works well on patios removing all sorts of detritus that can build up over time.

With patio now clear I was able to see the condition of the slate which showed grout smears on the surface from installation as some stubborn staining that the pressure treatment had been unable to shift. To resolve this I mixed up a batch of Tile Doctor Cleaning Agent Oxy Gel together with Tile Doctor Acid Gel and applied it to all the problem areas. Liquids have a tendency to run (patios have a gentle slope to allow for rain run off) whereas Gel’s remain in place so they dwell on the problem areas longer and really get to work. I left the mixture in place for a short while before scrubbing it in with a stiff brush and then extracted it using truck mount system. The water from the truck mount also neutralised the acid which is important as you shouldn’t leave acid on natural stone for too long.

Slate Patio Courtyard Brighton During Cleaning Slate Patio Courtyard Brighton During Cleaning

Sealing a Slate Patio

Fortunately there was no rain that night and being August also quite warm so I was pleased to find the Slate had tried off fully by the next day when we returned to seal it. To be certain however I ran some quick damp tests to check that the floor was completely dry and ready to be sealed. Once satisfied, I applied a couple of coats of Tile Doctor Colour Grow which works really well on Slate giving it that much needed protection against dirt and stains, along with a full lustre finish that enhances the character of the floor.

Slate Patio Courtyard Brighton After Cleaning Slate Patio Courtyard Brighton After Cleaning

The client was elated both with the result and even more so after we explained how to maintain the look of the tiles with having a doggy in the house!

Slate Patio Courtyard Brighton After Cleaning

 
 
Source: Slate Cleaning and Sealing Service in East-Sussex

Annual Sandstone Patio Maintenance in Northamtonshire

At the start of the year we usually get asked to restore the appearance of patios and other outside areas which have suffered from the staining of autumn leaves and the ravages of winter cold snaps. Most patios are quite straight forward to maintain however when you’re dealing natural stone then it’s best to call in your local Tile Doctor to ensure nothing is applied to the stone that could damage it.

Such was the case with this four-year-old Sandstone Patio at a house in the town of Kettering. Unfortunately, it was not sealed when it was first installed and the combination of weather and UV sunlight had faded the tiles, this together with general soiling had greatly affected the appearance of this beautiful stone and could almost have been mistaken for concrete slabs.

Sandstone Patio Before Cleaned Re-grouted and Sealed Kettering

Maintaining Sandstone Patio Paving

My first course of action was to lightly spray the area with a dilution of Tile Doctor Pro-Clean which is a powerful tile cleaning product that is safe to use on Stone. The solution was allowed to soak in for a while before being agitated with a brush to bring out the dirt. This was followed by pressure washing with a spinning tool at a medium pressure so as to not damage the stone.

Once dry I re-grouted the entire area and then sealed with Tile Doctor Colour Grow Sealant which is a impregnating breathable product (essential for damp environments) that also enhances the natural colours of the stone.

Sandstone Patio After Cleaned Re-grouted and Sealed Kettering

Within hours of finishing the customer came home and called me straight away to say he couldn’t believe the transformation that was achieved and they looked better than when they were first laid.
 
 
Source: Sandstone Patio Maintenance in Northamtonshire