Cardiff University Awards Local Tile Doctor Terrazzo Floor Renovation Contract

Last summer I was asked to carry out a survey at one of the Cardiff University buildings where they were looking at having a large Terrazzo floor restored. The University was on its summer recess so with no students around it was an ideal time for major works to be carried out.

At some point in the past the whole floor had been covered in a layer of self-levelling compound ranging from 2mm – 10mm thickness, so it could be covered with square carpet tiles which had then been secured with adhesive. You can still see the outlines of the tiles in the pictures below. It’s hard to appreciate from the photo that underneath there’s a beautiful Terrazzo floor waiting to be rediscovered.

Terrazzo Floor Before Restoration Cardiff University

The University had removed the carpet tiles but were unsure of how to remove the screed without damaging the Terrazzo underneath and so asked me to quote for restoring the whole floor. I carried out a test clean on the floor first to show the architect’s and university staff an example of what could be achieved.

Terrazzo Floor Demonstration Clean Cardiff University

The method I used for the test sample was to use a process called milling with a 50 grit Milling Pad, which I used to grind off the levelling compound until the stone became visible underneath. The test clean took me a good hour to complete but the results I achieved proved very satisfying both to myself and the clients and I was awarded with the contract.

Cleaning and Restoring a Terrazzo Tiled Floor

On commencement of the work I realised after 4 hours of milling that this method although effective was very time consuming and extremely messy! So, I tried using a long handheld sharp scraper which turned out to be a lot faster and cleaner in removing the cemented compound. In the end it took four days for two men and a great deal of hand ache to remove the screed for the floor.

Terrazzo Floor During Restoration Cardiff University

After removing the compound, I started milling the floor with a Tile Doctor Milling Pads, first the 50 segment & then a 200-segment pad to cut deep in to the floor to remove the stains in the Terrazzo and scratches from using the scraper.

This was followed by burnishing the stone with a set of four Tile Doctor Burnishing Pads. This involves the application of four pads in sequence from a coarse 400 grit through to a very fine 3000 grit to refine the surface of the Terrazzo and improve the lustre of the floor with each grade of pad.

Terrazzo Floor During Restoration Cardiff University

Sealing a Terrazzo Tiled Floor

The architect had specified a hardwearing finish as this was a very busy entrance way for students entering the buildings. So, after finishing the burnishing of the floor with a very fine 3000 grit pad I sealed the floor with three coats of Tile Doctor Colour Grow which seeps into the pores of the Terrazzo protecting it from within enhancing the colours of the chippings in the process whilst providing maximum protection. Finally, we polished the floor after sealing with another application of the 3000 pad and a polishing cloth to shine the floor further.

Terrazzo Floor After Restoration Cardiff University

It was a large floor, so I managed the project in sections, and this enabled me to start on the cleaning of a new section whilst the floor was drying in the previous section. As you can see from the pictures the floor was transformed and looked great. Needless to say the University were very happy with the result.

Terrazzo Floor After Restoration Cardiff University

 

Source: Terrazzo Tile Cleaning and Repair Service in Cardiff, South Wales

Refinishing 145m2 Polished Limestone Reception Area

We were engaged by a commercial maintenance contractor to clean the large Limestone reception floor area of a very prestigious office building in the centre of Cardiff. The office’s main tenant is a bank and the owners were keen to restore the floor as they were letting out the remaining office space and keen to show off its potential to other businesses. The Limestone floor had been laid in 2009 and naturally being a reception area had seen a lot of foot traffic and the standard cleaning process was struggling to keep pace with the ingrained dirt and would now need to be burnished with diamond encrusted pads to remove the ingrained dirt and bring back the polish.

Polished Limestone Central Cardiff Offices

Restoring Polished Limestone

First went over the area with a very course black burnishing pad fitted to a rotary cleaning machine and a little water to remove the worst dirt and cleaned the grout lines with Tile Doctor Pro Clean in the process with a stiff grout brush. For stubborn areas I mixed in a little Tile Doctor Nanotech HBU which deals with the heavy build-up of dirt, rinsing and extracting the soil with a wet vacuum as I worked.

Polished Limestone Central Cardiff Offices

Once the main ingrained dirt was lifted I moved onto the a medium burnishing pad which is the first step in restoring the surface back to its normal appearance; this was followed with the next pad in the sequence all the time lubricating with water as you go. The floor was then given a thorough rinse to remove any soil created by the processes and left to dry overnight.

Polished Limestone Central Cardiff Offices

The next day the floor was given a final polish with the last burnishing pad which is super fine and then it was sealed including the grout lines with a couple of coats of Tile Doctor Colour Grow which impregnates the stone to prevent contaminates becoming ingrained into the tile, it also enhances the natural colours in the stone. Last step was a final run over with a buffing pad to ensure any blemishes were removed.
 
 
Source: Commercial Limestone floor maintenance in Cardiff