Duna Isaba · Blanco Sandstone Slab: natural stone with centuries of history
Before reaching your terrace or your façade, this stone was sand. Sand from ancient rivers and deserts that, layer by layer and over millions of years, the earth pressed together in the mountains of Burgos until it became rock. That history can be read in its veining, and it is what makes no two Duna Isaba sandstone slabs alike.
Its white tone recalls the clean light of mountain houses and of courtyards where people sit to cool off in summer. Its yellowish-white background, barely brushed by orange veins, brightens terraces, porches and interiors. Available in 3 cm thickness.
Sandstone is one of the stones used to build churches, bridges and houses that have stood for centuries. That is why, when you bring it into your home, you are not just buying another floor or cladding: you are choosing a material that has already proven it knows how to age well.
✨ Why people fall in love with Duna Isaba sandstone
Unrepeatable beauty: each piece has its own vein and its own shade. No space built with Duna sandstone looks like another.
Warm and alive: it changes with the light throughout the day and brings a cosy feel that artificial materials can't achieve.
Ages elegantly: over the years it gains patina and character, like the stone of old villages, without paints or treatments.
Cool underfoot: sandstone doesn't build up as much heat as other materials, so you can walk barefoot in summer.
Beautiful and also durable: tested to 56 freeze-thaw cycles (UNE-EN 12371) and to thermal shock, suitable for outdoor use in cold areas. When wet it gives 68 SRV, well above class 3 of the Spanish Technical Building Code (over 45), so it grips well around pool edges and on terraces.
Truly natural: Spanish quarry stone, saw-cut and CE marked. No resins, no imitations.
🏡 Where to use it
Mediterranean-style terraces, patios and porches.
Pool copings and surrounds.
Cladding for façades and walls.
Garden paths for pedestrian traffic.
Bright interiors: living rooms and entrances.
📋 Technical data sheet Duna Isaba · Blanco (UNE-EN tests)
Property
Standard
Value
Apparent density
EN 1936
2,100 kg/m³
Open porosity
EN 1936
13.4%
Compressive strength
EN 1926
28 MPa
Flexural strength
EN 12372
2.3 MPa
Flexural strength after 56 freeze-thaw cycles
EN 12371
2.5 MPa
Water absorption
EN 13755
6.7%
Abrasion resistance
EN 14157 / EN 1341
20 mm
Slip resistance (wet)
EN 16165 / EN 14231
68 SRV
Breaking load at anchor holes
EN 13364
550 N
Material: natural quarry sandstone (arkose), Pinares region (Burgos).
The slabs in the shop are supplied with a saw-cut finish, but Duna sandstone is also available in other finishes: bush-hammered, honed, pick-dressed, scabbled and brushed (depending on the tone).
And if your project needs something special, we make it to measure: other sizes and thicknesses, steps, wall copings, window sills, kerbs, lintels, ashlar or rubble masonry. Write to us with the dimensions, finish and quantity, and we will prepare a no-obligation quote.
📦 Sales formats
Pack of 10 pieces: perfect for small areas, repairs or to see the stone at home before placing a large order. 60x40: 2.4 m² · 60x30: 1.8 m² · 80x40: 3.2 m² · 100x50: 5 m².
Full pallet: the most convenient option for building sites, palletised and strapped. Approx. 15 m² (the exact number of pieces is shown in each option).
💡 Professional tip: for floors, lay on a screed or on a full bed of mortar, with no voids under the piece. Allow 5–10% extra surface area for cuts and finishing, and mix pieces from several packs or pallets when laying to spread out the natural variations in tone. Outdoors, lay on a screed with a 1–2% slope and use a breathable water repellent if you want to make cleaning easier.
🪨 Natural stone: each batch may vary slightly in tone and veining from the photos. It is the hallmark of an authentic material, not a defect.
Frequently asked questions
What can Duna Isaba Blanco sandstone slab be used for?
It is used on terraces, patios and porches, for pool copings and surrounds, for cladding façades and walls, on garden paths for pedestrian traffic, and in bright interiors such as living rooms and entrances.
What sizes, thickness and weight does it have?
It is supplied in 3 cm thickness, in sizes 60x40, 60x30, 80x40 and 100x50 cm, with an approximate weight of around 63 kg/m². The finish is saw-cut.
Does it withstand frost and is it slip-resistant when wet?
It is tested to 56 freeze-thaw cycles (UNE-EN 12371) and to thermal shock, suitable for outdoor use in cold areas. When wet it gives 68 SRV, above class 3 of the Spanish Technical Building Code.
Are all slabs the same in tone and veining?
No, it is natural stone and each piece has its own vein and shade. Each batch may vary slightly from the photos, and it is advisable to mix pieces from several packs or pallets when laying.
Frequently Asked Questions
Does it withstand frost?
Yes. It has been tested through 56 freeze-thaw cycles (UNE-EN 12371) and keeps its flexural strength intact. It is suitable for outdoor use in cold and mountain areas.
Is it slippery when wet?
No. When wet it scores 68 SRV in the pendulum test, well above the 45 that building codes require for class 3, the highest. It is suitable for terraces and pool edges.
Does it stain, being so light?
Like any porous natural stone, it should be cleaned from time to time. If you apply a breathable water repellent, dirt and stains penetrate much less and clean off with water and neutral soap.
Can it be ordered in 2 cm?
The Isaba tone is supplied in 3 cm, the safest thickness for floors and façades. If you need another thickness or format, write to us and we will prepare a made-to-measure quote.
Are other finishes or special sizes available?
Yes. Besides the sawn cut there are bush-hammered, honed, picked, split-faced and brushed finishes, and we make other formats, steps, copings, kerbs or ashlar to measure. Write to us with dimensions, finish and quantity and we will send you a no-obligation quote.
How many m² come in each pack or pallet?
The 10-piece pack covers 60x40: 2.4 m², 60x30: 1.8 m², 80x40: 3.2 m², 100x50: 5 m². Full pallet: approx. 15 m²; the exact number of pieces is shown in each option.
How much does it weigh?
Around 63 kg/m². A full pallet weighs about a tonne.
How many slabs do I need?
Measure the area in m², add 5–10% for cuts and trimming and choose the packs or pallets that cover that total.
Do all the slabs have the same colour?
Not exactly: it is natural stone and every piece has its own veining and tone. Mix pieces from different packs or pallets when laying for an even result.
Does it need maintenance?
Very little. Just clean it with water and neutral soap. Optionally you can apply a breathable water repellent to make cleaning easier.
Are there other tones?
Yes, the Duna range has four tones: Olite · Golden, Viana · Pink, Isaba · White and Tudela · Ochre. You will find the links at the end of the description.
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