This is the ideal time of year for property owners to not only think about restoring their internal natural stone floor tiles, but also their external tiles. With it being Summer, the weather is warm and dry enough for patio restorations to take place.
The photographs below show a recent restoration of a two-year old Sandstone tiled patio at a property on a new build development in Bedford, the country town of Bedfordshire. Sandstone is a naturally porous stone, which does make it more vulnerable to the elements when it is used for outside flooring and is not sealed.
Unfortunately, the patio had not been sealed when it was first installed, and during the two years since, the combination of damp weather, a lack of sunlight in shaded areas, and a build-up of green staining from moss spores – together with general dirt and grime – had greatly spoiled the appearance of the beautiful stone.
Cleaning a Spoiled Sandstone Tiled Patio
My first course of action in carrying out the restoration was to lightly coat the patio with Tile Doctor Pro Clean. This is a multi-purpose, alkaline-based cleaner which is suitable for use on most natural stone, including Sandstone, Granite, Limestone, Slate, and Travertine.
The product was subsequently agitated with a scrubbing brush fitted to a rotary machine, before I pressure washed the patio at a medium pressure to avoid damaging the stone. As you can see from the photos below, this cleaning made a great improvement to the condition of the patio – in fact, it appeared almost new again! The customer was very pleased with the outcome.
The customer decided not to have the patio sealed, as he preferred the natural look and would prefer to have it cleaned on a yearly basis. Sealing is less important for external tiles, as compared to internal tiles, however if you do decide not to seal your patio, it’s highly recommended that you establish a routine maintenance plan for the stone. Otherwise, you run the risk – after just a few years – of allowing your tiles to end up in a similar condition to this Sandstone tiled patio before it had been restored.