¡Un servicio excelente! Personal muy amable, atento y profesional. Desde el primer momento te hacen sentir muy bien atendido y se nota que realmente se preocupan por la satisfacción del cliente. Una experiencia fantástica y totalmente recomendable. ¡Muchas gracias por la excelente atención!
How much stone do I need?
How much stone do I need for the ground?
For pebbles and gravel:
• ±80 kg per m², based on a 5 cm layer.*For grain sizes >32 mm a thicker layer is required.• Consumption per big bag: 1000 kg = 0.625 m³.
• Coverage: ±12.5 m² with a 5 cm layer.
For pine bark:
• ±70 L per m², based on a 5 cm layer.
• Consumption per big bag: 1000 L = ±1 m³ = ±600 kg
• Coverage: ±14 m² with a 5 cm layer.
For volcanic rock, slate and chamotte:
• ±50 kg per m², based on a 5 cm layer.
• Consumption per big bag: 1000 kg = ±1 m³
• Coverage: ±20 m² with a 5 cm layer
How much stone do I need to fill a gabion?
Density of ±1,650 kg per m³.
The calculation is easy to understand with an example: for a gabion measuring 100x50x30 cm, do the following:
1x0.5x0.3 = 0.15 m³
0.15x1,650 = 247.50 kg of stone.
*It is always a good idea to allow 5% extra, as gabions widen slightly when filled and always take a little more stone than the theoretical calculation.
Please note!
PLEASE NOTE! Before buying, read this information about gravel and pebbles
Grain sizes are sieve sizes, not exact measurements
When we talk about stone of, for example, 60-80 mm, we mean that the stones pass through an 80x80 mm square mesh and do not pass through a 60x60 mm one. A stone 100 mm long and 65 mm wide can easily pass through that 80x80 mesh, because the mesh sorts by the width of the stone as it passes through, not by its total length. That is why it is normal for a percentage of stones to have some dimension above 80 mm or below 60 mm.
Machines do not sort 100% accurately
In addition, no industrial sorting process is perfect: there is always a small percentage of stone which, due to speed, irregular shape or pieces overlapping on the belt, does not pass correctly through the corresponding mesh and slips into the grade, so stones larger than stated may occasionally appear. This is normal for this type of product and is not considered a defect.
Breakage of pebbles
In pebbles over 60 mm, up to 10% of the stones may break during sorting, washing, loading and unloading. We currently have no machinery that completely prevents this breakage. The product photos show only real pieces: broken pieces have not been removed.
Dust and sand in the product
This product is not washed, so it contains dust, sand and even traces of other materials from processing and transport. This is no problem for its use: the stone washes itself over time, or you can rinse it with water before use if you prefer.
Colour can vary considerably between batches
This is natural stone, and the colour changes from one batch to another, sometimes noticeably. This is especially important for multi-toned stones such as Blanco Rosa: some batches come out very white and others very pink, within the same product. If the exact shade is very important for your project, we recommend not buying this type of product online, as we cannot guarantee that the batch you receive will match the photo or a previous purchase.
Returns
Please bear in mind that returns, especially of 1,000 kg big bags, are usually complicated and expensive because of the weight and volume of the material. If the return is not due to an error on our part, the costs and arrangement of the return transport are borne by the customer.
Slate Chippings for Flat Roofs
Crushed Slate Chippings for Flat Roofs and Roofing
Protect and extend the life of your roof with our Natural Slate Chippings. This material, supplied as thin flakes or chips, is the ideal technical finish for flat or low-slope roofs, especially those with asphalt or bituminous membrane finishes.
Its main function is to act as a protective shield against premature aging caused by UV radiation, extreme temperature swings, and harsh weather, preventing the roofing felt from cracking or degrading.
📐 Available Grain Sizes
-
0-2 mm: Ideal for finer finishes, sealing, or technical mixes.
-
6-14 mm: The perfect size for robust protection and an aesthetic finish with more texture and better drainage capacity.
✅ Benefits and Functions
-
Total UV Protection: Filters sunlight, the main cause of degradation in waterproofing membranes.
-
Thermal Regulation: Helps cushion sudden temperature changes in the roof structure.
-
High Performance: Thanks to its flake-like shape (thin chips), it offers exceptional coverage using very little material, optimizing your investment.
-
Non-Slip Properties: Makes it safer to walk on the roof during maintenance.
-
Natural Look: Gives a sober, elegant, professional finish compared to conventional river gravel.
🛠️ Applications
-
Surface protection for roofing felt and waterproofing membranes.
-
Decorative finish on accessible and non-accessible roofs.
-
Use in technical gardening and landscaping thanks to its neutral color and durability.
Frequently asked questions about gravel, pebbles and decorative stone
¿Es seguro Gravilla de Pizarra para tejado tipo cubierta plana para acuarios o terrarios?
Sí, es un material natural apto para decoración de acuarios, terrarios y hábitats de reptiles. Recomendamos lavarlo bien con agua abundante antes de introducirlo para eliminar el polvo fino.
¿Puede alterar el pH del agua del acuario?
El impacto sobre el pH suele ser mínimo en la mayoría de los casos, pero si tienes peces o especies sensibles te recomendamos hacer una prueba previa en un recipiente con agua antes de introducirlo en el acuario definitivo.
¿Qué tamaño tiene el grano?
Consulta la granulometría indicada en la ficha del producto; seleccionamos un tamaño homogéneo adecuado para decoración de acuarios, terrarios y viveros.
¿Sirve también para otros usos decorativos?
Sí, además de en acuarios y terrarios, también se utiliza en jardinería, macetas y decoración de exteriores.
¿Hay que lavarlo antes de usarlo?
Sí, recomendamos lavarlo con agua abundante antes de su uso para eliminar el polvo fino que pueda desprender.
