Wales | Stone Cleaning and Polishing tips for Terrazzo floors

Cleaning a Terrazzo Tiled Porch Floor

Thankfully for once the forecast was correct and the weather was good on the day, we had booked in to complete the job. To restore the appearance first I used a set of diamond burnishing pads with water to grind off the dirt and refine the appearance of the stone and aggregate. I used a variety of pads with different grades of grit to ensure the floor was as clean as possible rinsing the slurry off the floor after each pad. The transformation was dramatic. The patio was then rinsed with water to remove the slurry that was generated, and I used a wet vacuum to extract it.

This process took much of the morning, it made a pleasant change to work outside in the fresh air, most of our jobs tend to be indoors. After a final rinse I left the porch to dry out in the sun over lunch and came back in the afternoon to seal.

Sealing a Terrazzo Tiled Porch Floor

First, I checked the floor had dried out with a moisture meter, it was within the acceptable levels, so had the green light to processed and seal the floor. Since cleaning it really was starting to look like a nice feature.

To seal the patio, I used a couple of coats of Tile Doctor Colour Grow which works well externally as it copes with damp conditions. It’s a colour intensifying impregnating sealer that provides durable protection to the surface as well as allowing the floor to breath. You can see from the photograph below how just how well Colour Grow improved the colours in the stone. Once I had finished it looked like a new installation.

The client was over the moon I had managed to get the area looking this good. He said he could remember when it was laid, and his dad would be very proud of it now. It had definitely stood the test of time.

The Washington Hotel in Llandudno, North Wales, is a truly historic building and one of the enduring features on the promenade of the sea resort. This beautiful part of Wales was the holiday destination of choice for Lewis Carrol, the famed author of Alice in Wonderland, and you can see several statues of him in and around the town.

The Washington Hotel first opened in 1855, but was rebuilt in 1925 after being destroyed by a fire. The building most recently served as a nightclub, before it closed in 2012. Now, there is ongoing renovation work to turn it into a restaurant.

Mosaic Terrazzo Floor Llandudno Restaurant Before Restoration

As part of this renovation work, we were asked to restore bring the old Terrazzo floor back to life, which was certainly worse for wear after nearly a century of use. It had been covered in carpet, as well as old vinyl tiles, and was very heavily soiled with dirt and ingrained muck. This area of floor would eventually act as the entrance to the restaurant and bar area, so it was important to get this right for the customer.

Mosaic Terrazzo Rotating Door Floor Llandudno Restaurant Before Restoration

Burnishing a Terrazzo Tiled Floor

There were three areas we were asked to restore, covering 36 square meters in total:

• Circular foyer (27 square meters)
• Internal entrance area (2 square meters)
• External entrance stairs: (7 squares meters)

We started the restoration process with the application of a Very Coarse 50 grit diamond pad to tear away all the old carpet and vinyl resin, clearing the area to allow us to work directly on the Terrazzo tiles. With the tiles exposed, we discovered two large, long cracks in the base of the floor, so we filled these with a flexible floor grout. We chose to use this instead of a resin compound because resin isn’t very flexible, and if there is any movement the crack will become exposed again after six to 12 months. A flexible floor grout will move with the contractions and expansions of the base, and if the movement is not too extreme the flexible grout will not crack in the future.

Llandudno Cracked Mosaic Terrazzo Restaurant Floor During Restoration

We then continued through our system of diamond burnishing pads, applying the 100, 200, 400, 800, and 1500 grit pads with a small amount of water as lubricant. Once the floor was fully dry we applied the final 3000 grit pad, which is the finest of the pads and produces a very high quality polished effect on the stone.

Llandudno Mosaic Terrazzo Restaurant Floor During Restoration

Sealing a Terrazzo Tiled Floor

Once the floor had been polished, it needed to be sealed in order to protect it from dirt becoming ingrained into the pores of the stone. We did this using firstly two coats of Tile Doctor Colour Grow, which is our impregnating, colour-enhancing sealer. The sealer works by penetrating the pores of the stone to fill them and block trapped dirt and stains. We then left the floor to dry off fully overnight.

The next day, we returned to the building to apply a crystallization powder known as Tile Doctor Shine Powder, which further enhanced the shine we had built up on the floor and give it extra sealer protection.

The customer was exceptionally happy with our work, as the restoration of the Terrazzo tiled flooring is an essential part of the renovation project overall. We wish them all the best in the eventual opening of the new restaurant!

Mosaic Terrazzo Rotating Door Floor Llandudno Restaurant After Restoration

For aftercare, we recommended to the customer that the floor is maintained with Tile Doctor Stone Soap as this will not only clean the Terrazzo without damaging the sealer like many stronger cleaners, but also maintain its patina as well.