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Do you think natural cork is just a wine stopper or a notice board? Here’s a fun fact: it can be ground down to create a material suitable for building composites – and it still retains its insulating properties. In loose form, cork dust is incredibly lightweight, placing no strain on structures.
Lightweight Material
Stable Structure
Loose Insulation
Additive for Construction Mixes
Safe and Hypoallergenic
Eco-Friendly Material
Got a few questions? We’ve put together the answers!
WHAT IS CORK DUST?
It’s the finest type of cork granulate – a light and dry powder. In appearance, it’s similar to flour or sand, with a light brown colour characteristic of natural cork.
WHAT IS CORK DUST USED FOR?
It has a wide range of applications:
- Construction: Used as an additive in plaster to improve thermal and acoustic insulation. It also serves as an insulating filler in building structures and as a component in lightweight concrete.
- Fishing: Essential in making pop-up boilies for carp fishing. It boosts buoyancy and helps attract fish more effectively.
- Fireworks and pyrotechnics: Due to its flammability, it’s used in the production of sparklers and various special effects.
- Glass industry (glassworks): Acts as a separator for mould filling during glass production – it doesn’t leave any inclusions.
- Battery and accumulator manufacturing: Cork dust is applied as an insulating layer between casting moulds and molten alloys.
- 3D printing: Used as an additive in filament production.
- Paints and decorative plasters: When mixed in, cork dust adds both insulation and a unique aesthetic finish.
- Model making (railway, architectural, historical): Perfect for creating realistic models, dioramas, or Christmas nativity scenes.
- DIY composite materials: Can be combined with adhesives or resins to create custom, handmade materials.
IS CORK DUST ECO-FRIENDLY?
Yes – natural cork is a 100% renewable and environmentally friendly material. Harvesting the bark doesn’t require cutting down trees. The bark regenerates naturally, and the trees themselves can live for up to 200 years.
HOW SHOULD CORK DUST BE STORED?
It’s best to keep it in a dry place, sealed tightly in a closed container. Make sure it’s stored out of direct sunlight – this helps preserve its properties for longer.
DOES CORK DUST LOSE ITS PROPERTIES WHEN MIXED WITH OTHER MATERIALS?
No – it still provides insulation and remains lightweight. The only thing that changes is its structure, as it forms a more solid mass when combined with other substances.
CAN CORK DUST BE USED AS BIOMASS?
Yes, it’s suited for use as biomass. It aligns with the principles of eco-friendly, sustainable development – not only are you using a natural raw material, but you’re also keeping the environmental impact to a minimum.
WHAT’S THE DIFFERENCE BETWEEN CORK DUST AND CORK GRANULATE?
The main difference is size – cork dust is fine. Cork granulate, on the other hand, is coarser and resembles couscous in texture. The largest form consists of actual cork nuggets.
WHAT IS THE DENSITY OF CORK DUST?
The density depends on particle size. For cork dust up to 0.25 mm, the average density is around 90–110 kg/m³. For particles between 0.2–0.5 mm, it ranges from 60 to 80 kg/m³.
HOW IS CORK DUST MADE?
It’s produced by grinding clean pieces of natural cork. First, the material is mechanically ground into very fine particles – much like grinding coffee or spices. Then it’s sieved to ensure a consistent, uniform texture.
Cork sheets and rolls are incredibly practical – but sometimes you need a material that can reach into every nook and cranny. Cork dust is cork in its micro form: loose, flexible, and just as eco-friendly. Synthetics don’t even come close – they’re less adaptable, heavier, and, well… artificial.
#1 HANDY AND CHEMICALLY NEUTRAL
Cork dust is ultra-light – and that’s no accident. Its sponge-like structure is made up of millions of microscopic, air-filled cells. This gives it substantial volume without adding weight. That’s a big advantage when it comes to handling – it’s effortless to transport and spread.
It also has another key feature: cork dust is chemically neutral. It doesn’t react with liquids or gases, which is especially important when you’re mixing it with adhesives, resins, or plaster components. It's also resistant to UV radiation and biological corrosion, making it perfect for outdoor use.
#2 ONE MATERIAL, ENDLESS POSSIBILITIES
Cork dust has applications across a wide range of industries – from thermal insulating plasters and soundproofing materials to creative DIY projects. It’s particularly effective in plasters, enhancing both thermal and acoustic performance.
One of its biggest strengths is its versatility – thanks to its elasticity and compressibility, it can be shaped and adapted to suit specific uses. If you're into hands-on projects – like models, decorations, or functional items – you'll quickly appreciate how easily it blends with other materials.
#3 A SAFE MATERIAL
Cork dust is hypoallergenic and safe for skin contact. It doesn’t cause irritation or allergic reactions – a big plus if you're looking to steer clear of harsh chemicals and create a healthier environment around you.
For us, safety isn’t just a promise – it’s backed by certification. Our cork granulate has an official hygiene certificate issued by the National Institute of Public Health in Poland (PZH). This document confirms the material is health-neutral and fully compliant with safety standards. It’s not just a marketing claim – it’s solid proof that gives you peace of mind. In fact, we’re currently the only supplier in Poland offering cork granulate with this level of certification.
#4 KIND TO THE ENVIRONMENT
Natural cork is a 100% eco-friendly and renewable material. It’s harvested from the bark of the cork oak tree – and, importantly, without cutting the tree down. The bark simply regrows, meaning the ecosystem remains in balance.
Cork dust is often produced by recycling cork products – such as stoppers, sheets, or panels. It’s a perfect example of a circular economy material: instead of throwing it away, we repurpose and reuse it. Sustainable and smart.
| Fraction | 0-0.1 mm |
| Volume | 15 kg (75 litres) |
| Colour | Natural |
| Material | Natural cork |
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