Riven Slate Patio Left Covered in Grout Smears By Northans Builder Restored

This customer, who lives in Wollaston, a small village in Northamptonshire, called me to look at the unfortunate condition of her Riven Slate tiled patio. She had hired a builder to install it, but he had neglected to remove the grout haze which had occurred quickly enough, allowing it to set. He was subsequently unable to remove the haze because he had already sealed over it. This had left it looking very unsightly, as you can see in the photo below.

Newly Laid Riven Slate Patio Wollaston Before Cleaning

The customer initially contacted me back in December 2016. At that time, I did explain to the customer that the Winter wouldn’t be an ideal time to restore the patio, and that it would be best to carry out the work in the Spring. However, she was so unhappy with the appearance of the patio and – knowing she had guests coming over for Christmas – wanted something to be done to improve the condition of the tiles as soon as possible.

It was agreed that I would immediately carry out the removal of the old sealer and the grout haze beneath, but leave the re-sealing until the Spring of the following year when the weather was dry. The customer understood that when I returned in the Spring, the patio would require another light clean and brush to prepare it for sealing.

To put the customer’s mind at rest somewhat, I carried out a test clean on one slab of the patio using Tile Doctor impregnating, colour intensifying sealer, known as Colour Grow. This darkened the tile and provided a natural look finish, which was preferred by the customer. I also returned to the property several days later to carry out a water repellency test, but as you can see from the photo below, the rain beat me to it. Thankfully, the repellency test had positive results.

Newly Laid Riven Slate Patio Wollaston Testi Cleaning

I was then able to begin the cleaning process.

Cleaning and Sealing a Riven Slate Tiled Patio

To begin, I removed the old sealer using a strong mix of Tile Doctor Remove & Go, which is a stripper and cleaner. This product was scrubbed into the tiles with a rotary brush machine. Net, I rinsed away the resulting slurry and soaked up the water with a wet vax machine.

This initial clean exposed the true extent of the grout haze – it was over all every tile! My next course of action was therefore to remove this using Tile Doctor Acid Gel, which is a gel cleaner specially formulated to neutralise grout haze. This was allowed to dwell for a short period before I brushed it in.

Newly Laid Riven Slate Patio Wollaston During Cleaning

Following this, I gave the whole area a second brush with a small amount of water, before using a wet vax machine once again to make sure all cleaning chemicals were removed. I used the customer’s hosepipe to rinse down the entire patio as there was good drainage.

Newly Laid Riven Slate Patio Wollaston After 2nd Cleaning

I allowed the tiles to dry out naturally, before waited for a dry day in April this year to return to the property. During this day, I sealed the entire area with Tile Doctor Colour Grow sealer to really deepen the colour in the stone and provide the whole patio long-lasting protection against the elements.

Newly Laid Riven Slate Patio Wollaston After 1st Coat

The customer was exceptionally happy to have the patio restored to perfect condition. I’m sure she’ll make great use of it over the Summer!

Newly Laid Riven Slate Patio Wollaston Completed

 
 
Source: Slate Patio Tile Renovation Service in Northants

Natural Slate Patio Stripped, Treated for Grout Haze and Sealed

Along with internal tiled floors at residential and commercial properties, we also specialise in the cleaning, restoration and sealing of all types of external tiled floors, including patios.

This customer, who lives in the small town of Brackley in Northamptonshire, had made the unfortunate mistake of sealing a brand new Slate tiled patio without removing the layer of grout haze smeared across the surface of the tile first. With the grout trapped between the tile and the new sealant the sealer was unable to fulfil its potential and the entire floor appeared really dull and patchy. The customer contacted me about setting the situation right.

Patio Slate Tiles with Grout Haze Before Cleaning Brackley

Treating a Slate Tiled Patio for Grout Haze

My initial course of action was to remove the new sealer using Tile Doctor Remove & Go, which is specially designed to strip away sealant, as well as adhesives and paints in cases where building and decorating works have left the tiles stained. The product was applied liberally across the surface area of the patio and agitated using a rotary machine fitted with a special stripping pad. Of course, this was necessary because the grout haze could not be treated without removing the sealant first. The soiled cleaning solution was promptly soaked up using a wet-vac machine.

Once the tiles were exposed I applied Tile Doctor Acid Gel, which is a blend of phosphoric and hydrochloric acids in more manageable gel form, all over the patio and allowed it to dwell for ten minutes to begin neutralising the grout haze. I then added a little water and worked the product into the patio with a stiff scrubbing brush and a rotary machine to ensure all grout haze was removed from the surface of the tiles. The remaining slurry was then removed using the wet vacuum, and I rinsed the area twice with plain water to ensure all cleaning products had been removed. It was them left to dry completely.

Patio Slate Tiles with Grout Haze Being Cleaned in Brackley

Sealing a Slate Tiled Patio

I returned to the property several days later to give the patio a fresh seal now that it was free from grout haze. First, I gave the patio a vacuum and light mop to remove any dust and debris. The customer wanted the tiles as dark as possible, therefore I suggested we use Tile Doctor Stone Oil before sealing, as this would darken the Slate significantly.

Once this was agreed, I applied one coat of Stone Oil, allowed an hour for the product to dry, and then followed this applying two coats of Tile Doctor Colour Grow sealer. This is our impregnating, colour enhancing sealant which provides maximum protection against ingrained dirt and stains, as well as a durable no-sheen finish.

Patio Slate Tiles with Grout Haze Removed and Sealed in Brackley

As you can see from the photographs, the Slate tiles experienced an impressive transformation. The fresh sealant, combined with the Stone Oil, really took the appearance of the tiles to a new level and, what’s more, it will be easier for the happy customer to keep it clean in the future.
 
 
Source: Slate Tile and Grout Cleaning and Maintenance Service in Northamptonshire