Weathered Limestone Patio and Steps Restored in Wembley

Here we have a Limestone garden patio and set of steps at a property in Wembley which had become heavily affected by lichen, mould and general outdoor soiling. The stone was in good physical condition but had spent the winter in a shaded position where it slowly turned green. The patio had lost its original appearance and the owner was keen to make use of it again and so I was asked to make it presentable again.

It was clear that the Limestone needed a thorough deep clean and then sealing to protect it going forward so I worked out a detailed quote for its renovation which would take two of our technicians two days to compete. Fortunately, we were in the middle of a heat wave at the time so I wasn’t worried about rain interrupting the work.

Cleaning Limestone Patio and Steps

The first stage was to treat the Limestone with Tile Doctor Nanotech HBU remover which would tackle the mould and lichen. HBU stands for Heavy Build-Up and left to dwell on the surface for approximately 15 minutes to break down the organic growth before being scrubbed in. This was mostly done by hand due to the location of the capping stone and steps. The area was then rinsed with fresh water and the resulting slurry and soiling removed using a wet vacuum.

Next, a dilution of Tile Doctor Pro-Clean was applied and worked into the Limestone using a slow-speed orbital machine fitted with fine burnishing pads. This provided a deeper clean, removing the ingrained dirt and organic staining without being overly aggressive on the limestone.

After cleaning, the stone was thoroughly wet vacuumed and rinsed with fresh water before being left to dry in preparation for sealing.

Sealing Garden Limestone

Once the Limestone had been allowed to dry overnight, it was sealed with two applications of Tile Doctor Ultra-Seal. This helped protect the porous stone from future staining and makes the patio and steps easier to maintain. This product is an invisible impregnator that soaks into the stone, occupying the pores and ensuring dirt remains on the surface where it can be easily cleaned away.

Apologies for the photographs only some of these had to be taken from within the property itself to get the best angle.

Limestone Patio Aftercare

To help maintain the appearance of the restored limestone, the customer was left with a bottle of Tile Doctor Neutral Tile Cleaner, together with cleaning and maintenance guidelines.

The combination of the correct cleaning method, tried and tested Tile Doctor products and professional equipment has restored the appearance of this shaded limestone patio and its steps, giving the customer a much cleaner and better-protected outdoor space.

 

Professional Restoration of a Limestone Terraced Patio and Steps in Northwest London