Flagstones – Black Tumbled Sandstone

Our Black Tumbled Sandstone flagstones are put through a tumbling process to create an antique, reclaimed appearance perfect for barn conversions, restorations and cottages. Our black sandstone paving contains subtle colour variations ranging from charcoal to light grey, with occasional warmer pink tones.


The Black Tumbled flagstones are durable and hard wearing, the colour mellowing with age.  All the flagstones are calibrated to 22mm thick +/- 1mm, ensuring a quicker and simpler laying time than flagstones with variable thicknesses.  They are ideal for use indoors and with underfloor heating, they can also be laid outside for patios and seating areas.  These ethically sourced Indian flagstones are naturally riven on the surface and have hand dressed edges, giving a softer, more natural finish.

What sizes are available?

Each 19m2 crate of Black Tumbled Sandstone flagstones covers 19 square metres with a mix of 62 pieces in 5 sizes:

  • 280mm x 560mm – 17 pieces
  • 420mm x 560mm – 11 pieces
  • 560mm x 560mm – 14 pieces
  • 700mm x 560mm – 9 pieces
  • 840mm x 560mm – 11 pieces

Each 11m2 crate of Black Tumbled Sandstone flagstones covers 11 square metres with a mix of 33 pieces in 5 sizes:

  • 280mm x 560mm – 6 pieces
  • 420mm x 560mm – 7 pieces
  • 560mm x 560mm – 5 pieces
  • 700mm x 560mm – 6 pieces
  • 840mm x 560mm – 9 pieces

Its advisable to allow an additional 10% on top of the area required for breakages, cutting etc.

Different uses for flagstones in the house and garden

Black Tumbled Sandstone flagstones are suitable for both interior and exterior flooring. Indoors, these flagstones work really well with underfloor heating, spreading and retaining the warmth throughout the stones. Outdoors, they are perfect for courtyard gardens, patios, pathways, seating areas and stepping stones.

Laying the flagstones

Outdoors, these flagstones can be laid on a sand and cement bed. Ensure the screed bed is level, and if needed use a sub-base. Spot bedding is not recommended as its makes the flagstones unstable and susceptible to fracturing.

As our Black Tumbled sandstone flagstones are all 560mm wide they can be laid in “tram lines” or they can be laid in a completely random pattern.

To keep a traditional, random pattern there are 3 rules:

1.  Do not have 4 corners meeting

2.  Have no more than 3 joins running parallel

3.  Do not have joins running for longer than around 3 metres. You may want to reduce this length if the overall area is small.

Joint widths are a personal decision, but a 12mm gap is standard. We recommend Jointex Easy as a fixing mortar. It’s ready mixed, easy to use, doesn’t stain the flagstones and creates a very neat professional finish. It is permanently water permeable, resistant to high pressure cleaners and helps prevents weeds. Just empty the tub onto wet flagstones and work it into the joints, making sure they are firm and compact; then wait for it to dry.

Looking after the flagstones

Personally we don’t seal flagstones for outdoor use, because we think they improve with weathering. However you can seal them if you prefer.

Indoors we would definitely recommend sealing flagstones, to protect them from grease marks and household staining. It is essential to use a sealant specially made for natural stone, and we sell a range of high quality sealants for you to choose from. Some of the flagstones are more porous than others so the number of coats required will differ from one type of flagstone to another.


An important note about natural stone

Whilst we have done our utmost to ensure the stone and colours displayed on our website are accurate, they are to be used as a guide only. Because stone is a natural product, texture and colour will vary from piece to piece. As we work through the quarry, seams will yield slightly different coloured and shaped stones.

The way in which flagstones are laid, and the amount, colour and type of grout used will all impact the look of the finished design. Please bear this in mind when ordering stone samples and products.


Price per pack
From £440.00 ex VAT
From £528.00 inc VAT