Renovating a Water Damaged Riven Chinese Slate Floor in Shipdham

Slow leaking underfloor pipes are guaranteed to wreck the look of an expensive tiled floor and this is exactly what had happened at our client’s house in the village of Shipdham. The problem occurred in the Kitchen and due to the slow nature of the leak it was some time before the problem was diagnosed and repaired. This resulted in a huge damp problem affecting the riven Chinese Slate tiled floor, damaging the sealer and resulting in white efflorescence salts being regularly deposited across the whole area.

The old kitchen units had been removed and the floor partially excavated to access and repair the leaking pipework, after which a new section of slate tiles had been re-laid. The new and the old sections were noticeable, and part of my job would be to clean the old tiles to a standard where they would blend in with the new.

Riven Chinese Slate Floor Before Cleaning Shipdham

Cleaning a Riven Chinese Slate Floor in Shipdham

The first job was to deep-clean the floor using a strong solution of Tile Doctor Pro-Clean mixed with a small quantity of Tile Doctor Remove and Go, which would help to dissolve the damaged sealer. This poured onto the floor and left to soak in for ten minutes before being scrubbed into the slate with our rotary machine fitted with a brush attachment. This brush scrubs right into the uneven surface of the tiles and makes light work of what can be quite a physical job. This process releases a lot dirt and old sealer from the tile which is effectively removed using another machine that gives the floor a power rinse at the same time.

The grout lines and parts of the riven surface which were still soiled were cleaned by hand using angle head brushes and Tile Doctor Oxy-Gel, which is a concentrated version of Pro-Clean in gel form which makes it a lot easier to contain in a small area. Having satisfied ourselves that the floor was finally clean, we left it to dry thoroughly overnight with assistance from our dehumidifier.

Sealing Riven Chinese Slate Tiles in a Shipdham Kitchen

On our return the following day, we damp tested the floor and found that the moisture content was a little higher than we would have liked and this would certainly cause a problem with the standard Tile Doctor acrylic sealer which is water based. In our experience water-based sealers are often only successfully applied if the conditions are ideal and the moisture content of the stone is very low. We chose, therefore, to use a slightly different product in the form of Tile Doctor Seal and Go Extra which is microporous and has a higher acrylic solids content than the standard product, making it ideal in situations where dampness in the tile is an issue but the client wants a sheen finish to make daily maintenance easier.

Six coats of Seal and Go Extra were applied in total, the result had the sheen finish the client wanted and the sealer enhanced the different colours in the slate in the process. The sealer will provide excellent on-going protection and being a fully breathable sealer, it will not be impacted by any damp issues as the floor dries out completely over time.

Riven Chinese Slate Floor After Cleaning Shipdham

With the work completed it the whole floor looked great and it was difficult to spot the repair, our client was certainly happy with the result and made the following comment:

Fantastic service and outstanding results. Our slate floor looks amazing. Very happy
Clair R, Shipdham

 
 

Deep Cleaning and Sealing an Old Slate Tiled Floor in Norfolk

Dirty Terracotta Floor Tiles Cleaned and Sealed in Hales

How the Terracotta floor tiles at this property in the Village of Hales, Norfolk became quite so comprehensively dirty in so short a time, we will never know. We were contacted by the new owner, a lady who had become so distressed by the state of the floor in the house she had recently bought that she was seriously considering ripping up the entire area of tiling and replacing it. Remarkable particularly because the property had been restored only a couple of years ago, the kitchen and hallway being laid with new terracotta tiles.

The entire surface was deeply ingrained with soiling and the pointing lines were filthy, despite there being evidence of some kind of topical sealer having been applied at the time of installation. It quickly became obvious during testing that the sealer had been applied very sparingly and had mostly worn away, leaving a badly compromised fluid and soiling resistance with a dull and dirty finish which refused to clean up when mopped.

Terracotta Tiled Kitchen Floor Before Cleaning Hales

Deep Cleaning Terracotta Floor Tile in Hales

The tiles turned out to be made of a fairly soft terracotta which meant that we were able to deep-clean them extremely effectively using a strong dilution of Tile Doctor Pro-Clean (one part Pro-Clean to two parts water). A strong dilution was required to remove what remained of the old sealer in the less used areas and strip the surface back to the bare tile.

The Pro-Clean was left to soak into the floor for about ten minutes before being worked in using our heavy rotary machine fitted with a black scrubbing pad. The resulting slurry being power rinsed and vacuumed away with our 400psi Ninja machine. All the dirt and virtually all of the old sealer was removed at this stage; the remaining patches around the edges of the area being finished by hand with a 200-grit hand-held burnishing block. The pointing lines were then cleaned by hand with neat Pro-Clean and an angled grout brush.

Finally, the deep-seated oil stains in front of the cooker were brought out using Tile Doctor Oxy-Gel which was left to dwell on the marks for an hour before being agitated with a diamond burnishing pad and rinsed away with the Ninja machine. The floor was then left to dry thoroughly overnight with assistance from our dehumidifier.

Sealing Terracotta Floor Tile in Hales

Owing to the softness and consequently high porosity of the substrate, we realised that it could take up to ten coats or more of our chosen sealer in order to achieve the level of shine our client had requested so that the daily mopping would be effective.

Our usual solution to enable us to complete the work in one day would be to apply a coat of penetrating Tile Doctor Colour Grow sealer to the tiles first, followed by up to five coats of topical sealer which would provide the finish, but because our client loved the new lighter colour of the cleaned tiles, Colour Grow was not an option as it is designed to enrich and thereby slightly darken the colour.

The solution therefore was to apply a single coat of Tile Doctor Ultra-Seal which, like Colour Grow, is a solvent-based penetrating sealer but doesn’t alter the colour of the material. This was followed by five coats of Seal & Go to further improve the fluid resistance and provide the mid-sheen finish required.

Terracotta Tiled Kitchen Floor After Cleaning Hales

At the end of the job we had a very happy client whose actual words were: “thank you so much for restoring my faith in my floor!”
 
 

Renovating Terracotta Floor Tiles in Norfolk

Renovating Reclaimed Slate Floor Tiles in Wreningham

When the old Rowntree Mackintosh sweet factory at Chapelfield in Norwich was closed down and eventually demolished, our client acquired a quantity of the beautiful green/black slate flooring tiles which had formed part of the reception area of the plant. They had laid these tiles edge to edge with no grouting in their large kitchen/dining room extension at their home in the village of Wreningham and the result was perhaps one of the most impressive examples of high-quality slate flooring we have ever seen in any location.

The Slate floor tiles had been protected against oil and fluid spillages with the application of a penetrating sealer after installation at the property but, over the ensuing years, there had been some inevitable degradation of the sealer and the entire area was now in need of a thorough deep-clean and reseal in order to remove the coating of general grime, bring out the strikingly deep colour and restore the stain resistance.

Cleaning a Slate tiled floor

As there was no topical finish to remove, we proceeded to deep-clean the surface of the tiles using Tile Doctor Pro Clean at a less powerful mix ratio of 1-part water to 5-parts cleaner. This solution was applied to the tiles and left to soak in for ten minutes before being worked in using a black scrubbing pad fitted to our rotary machine.

The resulting muddy slurry was then power rinsed off the floor with water and then extracted with our Ninja machine which has a very powerful vacuum. The high pH product was so effective, no further cleaning was necessary.

The whole area was then dried thoroughly using two large industrial fans which dramatically reduced the drying time, enabling us to move onto sealing later that afternoon. We don’t normally recommend cleaning and sealing in the same day as the floor has to be dry before sealing however in this case we were able to progress through the cleaning process much quicker than anticipated.

Slate Tiled Floor in Wreningham During Sealing

Sealing a Slate Tiled Floor

Before sealing the floor was spot tested in different places using a moisture meter. All was well, so a single coat of Tile Doctor Colour Grow was applied to the Slate tiles. Colour Grow is a penetrating sealer that seeps into the pores of the stone protecting it from with and as its name suggests also intensified the natural black/green colours of the slate in the process.

Once the first coat was dried I followed up with three coats of Tile Doctor Seal & Go, which further enriched the colour and provided a pleasing mid-sheen finish to the floor surface.

Slate Tiled Floor in Wreningham During Sealing

The whole process really put the life back in the stone floor and the tiles which were once dull now look vibrant and colourful.
 
 

Deep Cleaning and Sealing an Old Slate Tiled Floor in Norfolk

Terracotta Tiled Church Floor Renovated in Eaton Village

St Andrews church serves a large congregation in Eaton Village which is located just outside the city of Norwich on the south side. A sizeable extension was built onto the old church in the 1980s to accommodate the ever-increasing number of people wanting to attend and it was in this part of the building where a problem had developed with the Terracotta tiled flooring.

The tiles chosen by the architect were made from a surprisingly soft terracotta clay which had been sealed with an oil-based product (probably Osmo Polyx Oil or similar) but the coating generally had worn away badly, particularly along the main foot traffic lane up the aisle to the altar. The overall appearance was extremely tired and dull with wide lanes of ground-in dirt.

The clients asked us to clean the floor and replace the thin oil finish with something more durable and easy to maintain.

Terracotta Floor Tiles Before Renovation St Andrews Church Eaton Norfolk

Deep Cleaning Terracotta Church Tiles

Our first job was to remove the now very patchy finish and deep-clean the entire surface of the floor. This was achieved using a strong solution of Tile Doctor Pro Clean mixed with a generous quantity of Tile Doctor Remove & Go. The combined solution was left to soak into the Terracotta tile and grout for about twenty minutes before being agitated with a green scrubbing pad fitted to our rotary machine. The tile was so soft I felt that a black pad would probably have been too harsh and may have damaged some of the religious symbols which had been moulded into a number of individual tiles.

The resulting clay, dirt and sealer slurry was then power rinsed and vacuumed away with our Ninja machine. These machines force hot water under high pressure onto the floor and then extracts the resulting soiled water away with suction. It was an expensive investment for the company, but it certainly makes work like this much easier.

Any remaining soiling in the grout lines was removed by hand using Tile Doctor Oxy-Gel which is a more powerful but manageable gel form of Pro Clean. Also, there were a few really stubborn areas in the corners where the oil finish had pooled and hardened during application. To deal with these and completely remove the shiny patches it was necessary to use a 100-grit hand-held diamond block.

After a final rinse to remove any trace of cleaning product the whole floor was left to dry off overnight, assisted by two industrial fans and a commercial dehumidifier.

Sealing Terracotta Church Tiles in Eaton village

On returning to the church after the previous day’s cleaning, we spot tested the tiles across the whole floor area and found that the fans and dehumidifier had done their job and the substrate was easily dry enough to accept a sealer. We knew that a damp proof membrane had been laid under the floor at the point of installation, so moisture ingress wasn’t going to be a problem. What was an issue however was the high porosity of the clay tile now that it had been stripped of ingrained dirt and the old sealer.

I usually apply Tile Doctor Seal and Go to Terracotta tiles as it leaves the floor with an attractive subtle sheen, however we realised that the floor would probably soak up around a dozen coats or more if applied directly. With this in mind we decided to start with the application of two base coats of Tile Doctor Colour Grow. Colour Grow is a penetrating sealer that would occupy the pores of the Terracotta tile, protecting it from within whilst enhancing the natural colour of the clay at the same time. This was then followed by six coats of Seal and Go which enabled us to achieve the desired level of durability and sheen.

Terracotta Floor Tiles After Renovation St Andrews Church Eaton Norfolk

When we had finished the work, this is what the client had to say:

“After careful consideration of several contractors, it was decided that Nicholas White provided the most sympathetic solution to our flooring needs and at a competitive price. The work was completed as promised with minimum fuss. At all times Nicholas and his staff worked in a professional manner and were totally respectful of their sensitive surroundings.

We were very satisfied with the final work and would have no hesitation in recommending this contractor to other potential clients. J Holmes, Warden St Andrews Eaton.”
 
 

Terracotta Church Floor Renovation in Norfolk