Random Tumbled Building Stone – BMQ Sandstone

BMQ random tumbled building stone is our premium quality sandstone. It is quarried from our Tybubach Quarry at the foot of the Black Mountains, on the border of England and Wales. Its colouring is a combination of cool greys, green and warm rustic browns tones that work exceptionally well together.


BMQ random tumbled sandstone is an exceptional quality natural stone. Like our BMQ random building stone it is relatively thin and naturally flat-bedded, and as such is easy to work with and highly popular with trade professionals.

The difference between our random building stone and the random tumbled building stone is that the latter is put through a tumbling process to soften its faces and edges.

The sandstone we quarry here at the foot of the Black Mountains has been used throughout Herefordshire for centuries. Our random tumbled building stone has a naturally time-worn and weathered appearance, and as such is an ideal match for restoration and renovation work on existing buildings.

For new builds, the BMQ random building stone is a popular choice when it is important (e.g. for local authority approval) to use building materials that preserve and reflect historic character.

One bulk bag of random building stone cropped to the standard 100mm – 150mm (4-6 inch) bed width will provide enough material for 3 to 3.5 square metres of facing stone. A wastage allowance of 10% should always be calculated into your figures when ordering.

What is random tumbled building stone?

Random tumbled building stone is cropped to a 100mm – 150mm (4-6 inch) bed width as standard, providing at least one usable face per piece. (‘Bed width’ is the width of your footing). Heights and lengths are naturally random, hence its name – although you might also hear it called facing stone, random cropped building stone or random rubble in the trade.

After the stone has been cropped to size it is then put through a tumbling process which softens the edges and faces. Using tumbled building stone helps to create a classic time worn effect.

One bulk bag of random building stone cropped to the standard 100mm – 150mm (4-6 inch) bed width will provide enough material for 3 to 3.5 square metres of facing stone. A wastage allowance of 10% should always be calculated into your figures when ordering.

The natural variation in the shape and colour of real stone means that every piece of sandstone is unique. As such, working with random building stone usually requires the skills of a stone mason or appropriately experienced builder. It’s a technique suitable for house construction and commercial / public buildings, restoration and renovation projects, boundary or retaining walls, dry stone walling, garden features and any kind of building project that involves the use of natural stone.

What if I need my stone cut differently?

If you need a non-standard bed width, our in-house stone cutting service can crop the stone accordingly. A custom bed width of 150mm- 225mm (6-9 inch), for instance, will provide you with a larger stone in all dimensions. Whatever bed width you specify, the heights and lengths of each piece will remain random.

Stone can also be provided “as dug”. This is stone dug straight from the quarry, without cropping to a specific bed width, and is popular when building dry stone walls.

We can also provide corner stones as required. These are made by cropping the random tumbled building stone as normal, then turning each piece of stone at right angles and cropping once more to make a right angled corner. They will have random heights and lengths and are ideal for chimneys, reveals, pillars etc.

If you need less than a bulk bag of random tumbled building stone, a different bed width or have a delivery address with tricky or limited access, please do give us a call – we’ll be happy to help.

Building and walling materials to match

Our BMQ random tumbled building stone is cut from our original quarry at Tybubach. A few miles down the road, our Llandraw Quarry produces sandstone identical in colour and texture, with one fundamental difference in that it splits naturally into layers.

From the Llandraw Quarry we produce flagstones, cobbles, lintels, cills, steps, edging, wall coping and pier caps. These are available in standard sizes or can be bespoke cut to your spec.

We also source a range of flagstones, cobblestones, lintels and cills from responsible suppliers throughout the world, to provide our customers with a wider choice of colour, finish and prices.

For external landscaping we provide a range of rocks and stones from all of our quarries, with a choice of BMQ grey-green sandstone, Callow red sandstone, and Cornish silver-grey granite. These are available in various sizes from small rockery stones to 12 tonne boulders.

Different uses for random tumbled building stone

Here are a few applications for random tumbled building and walling stone:

  • Facing stone for new builds
  • Building restoration and renovation
  • Garden walls
  • Dwarf walls
  • Dry stone walling
  • Fireplaces
  • Chimneys
  • Gabion Baskets
  • Pillars
  • Wishing Wells
  • Feature walls
  • Retaining walls
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 building technique, quantity, colour and type of mortar used will all impact on the look of the finished product. Please bear this in mind when ordering stone products. For larger projects or any projects where a specific look is required, we recommend that test panels are built.

We’ve provided a few tips on how to build a stone wall, and if you need any advice, give us a call.

Price per bulk bag
£230.00 ex VAT
£276.00 inc VAT


Llandraw Crazy Paving

Crazy Paving – Llandraw Sandstone

Price per Sq metre
£25.00 ex VAT
£30.00 inc VAT

Flagstones – Llandraw Sandstone (External)

Price per Sq metre
From £100.00 ex VAT
From £120.00 inc VAT