Flood Damaged Sandstone Flagstone Floor Renovated in Chagford

Chagford is a small town on the north-east edge of Dartmoor and so as you can expect is surrounded by plenty of old farmhouses, some still as part of a working farm, some long since converted to family homes with just a small area around the property remaining and some having made use of the land and reinvented farmland. I visited a property that falls into the latter category, having converted pastoral farmland into stables and a riding school with a family home at the centre. Whilst the owners were on holiday having a well-earned rest a pipe burst flooding the ground floor of their house, damaging the Sandstone flagstone flooring in the process.

I went over to inspect the floor and could see that the stone floor had dried out but was now dull from dirt and in addition some of the stones were now suffering from shaling. This is where the top layers of the stone start to delaminate, and the only treatment is to cut the stones back to a decent surface through a process called milling. Tile Doctor has available a set of very coarse diamond encrusted pads for this purpose which I was able to demonstrate. I carried out the demonstration on a small area so that the customers could be confident that there was a remedy and then I measured the floor so that I could work out the amount of products that would be needed and priced the job accordingly.

Flood Damaged Sandstone Tiled Floor Chagford Before Restoration

The customers were keen to go ahead with the quote and I arranged to go back and restore the floor at a mutually suitable date.

Milling Delaminated Sandstone Flagstones

On my return I prepped the skirting boards around the hallway with plastic tape to protect them from the soil generated during the milling process. Once done I started the floor treatment using a very coarse with a 50-grit diamond milling pad to cut the sandstone back and then followed with a 100, 200 and finally a 400-grit pad to get rid of any scratches caused by the coarser pads and to tighten the pores of the sandstone which would allow for easier maintenance. Water is used to lubricate the process and the floor is rinsed with more water, which is then extracted with a wet vacuum between the application of each pad.

Once this was completed and the sandstone floor was thoroughly rinsed and then dried with the wet vacuum to remove as much moisture as possible. The floor was then left to dry out thoroughly before I returned to seal. This was a large area and so the milling was done in various stages over a few days so by the time I had finished the last area the first one was nearly ready to be sealed.

Sealing Sandstone Flagstones

The customers wanted a slight sheen to the stone floor, but not too shiny and so Tile Doctor’s Seal and Go was used; this is an acrylic sealer which once fully cured will settle to a satin finish which works really well on this Sandstone. Like the cleaning the sealing was also staggered into sections to avoid the whole of the ground floor being out of action whilst the sealer dried.

Flood Damaged Sandstone Tiled Floor Chagford After Restoration

Similar to paint drying, the polymers in Seal and Go initially give the floor a semi-gloss appearance and so I warned the customer of this, reassuring them that it would dull to a satin finish over the next week or so. In fact, I called back two weeks later to check and they confirmed this had happened and they were very happy with the result.
 
 

Restoration of Water Damaged Sandstone Flagstone Flooring in Devon

Centuries Old Limestone Flagstones Resurfaced and Restored in South Milton

South Milton is a small, but very old town of about 400 inhabitants in South Devon. The village has been there for at least 1,000 years and is known for the nearby National Trust beach area of South Milton Sands.

I recently visited the area to visited a customer who had discovered a Limestone tiled floor that had been hidden under carpet for around twenty years. The floor was several centuries old – as is the property itself – and it was suffering from a problem known as flaking or shaling, which is when the top layer of the stone starts to flake off.

The customer had already made the decision to remove the carpet and underlay because they wanted to reinstate some character and original features to their dining room! The floor was very dry and dusty and had the imprint of the underlay firmly embedded in some areas. As a result, the floor appeared cracked and damaged (see the photo below) and was in dire need of restoration.

A test was conducted using both chemicals and diamond-enhanced abrasive pads to ascertain the most appropriate restoration method; although the diamond pads are the only real option to address the shaling the chemicals could have also been used in the cleaning of the floor. The test showed that the diamond pads were the most effective solution for the floor and a quote was produced which as accepted.

Limestone Flagstone South Molton before cleaning

Milling a Damaged Limestone Tiled Floor

With the state the floor was in, I needed to use a process called milling, which involves using Very Coarse diamond encrusted pads fitted to a heavy rotary scrubbing machine to cut back the damaged layer of stone to unveil a fresh surface. The floor was suffering from mild lippage and undulation problems, and the milling would be able to resolve these problems too.

Lippage occurs when the surface of the floor becomes uneven and the tiles are not level with one another, and this can be quite hazardous. Undulation is when the floor gets a wave-like appearance.

After cutting the floor back with a 50 and 100 grit coarse milling pads to expose the new surface, I gradually smoothed the surface with finer pads up to 400 grit to close the pores in the stone.

The floor was then given a thorough rinse which ensured it was clear of all dirt and soil that had been generated, even the imprint from the underlay had been effectively removed.

Sealing a Limestone Tiled Floor

After cleaning the floor was left to dry for two days to ensure it would be fully dry before our return to seal the floor. To seal I used a colour-enhancing sealer called Colour Grow which impregnates into the pores of the stone, lifting the colours and protecting the stone from within. Colour Grow is suitable for use on a variety of natural stone, including Flagstones, Flamed Granite, Limestone, Marble, Quarry Tile, Sandstone, Slate, Travertine as well as Victorian tiles.

You can see the complete transformation of the Limestone tiled floor in the photo below.

Limestone Flagstone South Molton after cleaning

The difference made is quite remarkable! The customer had believed the tiles to be unsalvageable, and so she was over the moon with the outcome.
 
 

Professional Restoration of a Damaged Limestone Flagstone Floor in Devon