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How often have you found yourself chopping up sheets just to make them "kind of work"? Probably more times than you'd care to admit—and let’s be honest, the end result was rarely spot on. Stiff panels just can’t fill in the gaps or blend into plasterwork. That’s where granulated cork shines. Just pour it where you need it—no slicing, no stress. Adaptable, super light, and natural.
Natural
Flexible
Loose Fill
Lightweight
All-Purpose
Trusted
Got some questions in mind? We’ve got you covered right here!
WHAT EXACTLY IS GRANULATED CORK?
It’s simply natural cork that’s been ground into small particles. They’re lightweight and adaptable. Thanks to this form, cork becomes way more versatile—you can pour it or fill in tricky gaps. Basically, it does what sheets just can’t.
WHAT CAN YOU DO WITH GRANULATED CORK?
Granulated cork has loads of uses in all sorts of fields:
- Construction and industry: works great as an additive in lightweight concrete, thermal plaster mixes, bonding composites, or even foundations.
- Insulation: perfect for stuffing wall cavities to boost thermal performance.
- Composite structures: used as a lightweight, flexible core in, for example, cabins and specialist vehicle interiors.
- Furniture production: an eco-conscious stuffing for pouffes, cushions, or chairs.
- Footwear: a component in crafting soles and inner shoe linings.
- Gardening: mixed into soil, it boosts structure and air flow.
- Crafts and models: looks just like gravel or crushed rock—ideal for nativity sets, dioramas, or as theatre props that mimic sand.
- Absorbent uses: handy for mopping up oil spills.
WHAT’S THE DENSITY RANGE FOR GRANULATED CORK?
Density depends on the grain size (also called the fraction):
- 0.5 – 1.0 mm: around 140–150 kg/m³.
- 1 – 2 mm: roughly 100–110 kg/m³.
- 2 – 3 mm: between 120–130 kg/m³.
- 3 – 4 mm: approximately 110–120 kg/m³.
- 4 – 5 mm: around 120–130 kg/m³.
IS CORK NATURAL, SUSTAINABLE AND BIODEGRADABLE?
Yes, cork It’s made from the outer bark of cork oak trees—a renewable material that’s harvested without harming or felling the tree. It’s 100% biodegradable and environmentally safe.
HOW DO YOU PRODUCE GRANULATED CORK?
It all starts with the bark of cork oak trees. The trees themselves aren’t harmed—the bark is carefully peeled off every 9 to 12 years, then left to dry and cleaned thoroughly. Once prepped, it’s processed through machines that crush it into granules. This results in different grain sizes, from powder-fine to chunky bits.
DOES GRINDING CORK AFFECT ITS PROPERTIES?
Nope, ground cork keeps all the benefits—thermal and sound insulation, water resistance, and flexibility.
Turning cork into granules just gives you more ways to use it: pour it into small spaces, mould it where needed, or insulate spots that rolls or panels can’t reach. It’s simply more versatile—light, flexible, and a breeze to use in tricky areas.
IS CORK GOOD FOR INSULATION?
Yes—it’s a very good insulator for both heat and noise. That’s all thanks to its natural structure, made up of millions of tiny air-filled cells.
Unlike synthetic stuff like mineral wool or foam, cork doesn’t need any chemical tweaks. It’s light, breathable, and doesn’t make a mess. You get all the usual insulation perks, plus it’s eco-friendly, non-toxic, and gentle on the planet—and on you.
DO YOU SELL OTHER TYPES OF GRANULATED CORK?
We sure do! Our range also includes:
- Cork dust – superfine texture, almost like powder or flour.
- Cork nuggets – bigger pieces, great for when you need something loose but a bit more substantial.
WHAT’S THE BEST WAY TO STORE UNUSED GRANULATED CORK?
Store them somewhere cool and airy—like a garage, pantry, or cellar. Avoid places that are hot or in direct sunlight, and don’t keep them near heaters. A sealed container will help keep the granules fresh and ready for use.
Most materials tend to be either bulky and tricky to handle or way too flimsy and quick to wear out. Granulated cork is different—it’s light, natural, and adaptable. It steps in where other options fail: tight corners, uneven surfaces—basically, anywhere you need a material that fits in perfectly and holds up well.
#1 ONE MATERIAL, ENDLESS POSSIBILITIES
Traditional insulation options—think polystyrene panels, mineral wool, or spray foams—often make you work around them. You have to measure, slice, adjust... sometimes even rethink your whole approach. Let’s face it—it eats up loads of time.
Cork granules flip the script—they shape themselves to the job. That’s why they’re a go-to solution across construction and manufacturing. They’re added to lightweight concrete, thermal plasters, bonding mixtures, and even foundations. As insulation, they’re brilliant for filling cavities in walls, making them much more efficient at keeping heat in or out.
#2 INSULATION THAT WON’T WEIGH YOU DOWN
Cork granules come with excellent thermal and sound insulation abilities. Their secret? A structure packed with millions of tiny air pockets that naturally block out noise and help regulate temperature. Unlike many fillers used for insulation, cork is incredibly light—so it won’t weigh your structure down.
Mixing granulated cork into concrete isn’t just about going green—it’s a real boost in performance. These blends hold heat better, dull down noise, and remain far lighter to work with.
#3 COMPLETELY NATURAL
What you get here is NATURAL cork. Most of the world’s cork comes from Portugal, where the tradition of cork harvesting has deep roots and strict quality standards are in place to protect it.
This isn’t some “eco-style” marketing trick—it’s truly organic. Cork bark is stripped by hand without chopping down the tree, which then continues to grow and regrow. Unlike many other resources that demand constant farming, cork thrives in its own time—naturally and sustainably.
#4 BUILT TO LAST
Cork granules aren’t just fantastic insulators—they’re also long-lasting. They don’t trap moisture, so mould and fungi don’t stand a chance. And pests? They’re not interested. Cork doesn’t attract insects or rodents—termites and ants simply leave it alone.
Apart from being great at sound and heat insulation, cork is also non-conductive. That makes it perfect for use around electrical systems where keeping risks low is vital. On top of all that, cork’s chemical stability means it stays reliable for the long haul—unlike many other natural materials that break down over time.
| Fraction | 3-4 mm |
| Volume | 10 kg |
| Colour | Natural |
| Material | Natural cork |
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