Our natural cork granules (2-5mm) provide a high‑quality, stable and reliable aggregate for plasterers, renderers and eco‑construction professionals. Unlike ultra‑light expanded cork, our material is natural, denser and far more consistent, ensuring a predictable mix that doesn’t float, separate or weaken your finish.

We supply UK‑stocked natural cork granules in 1kg, 2.5kg, 5kg and 10kg bags, with larger quantities available for trade buyers.

Our natural cork granules provide excellent stability, workability and performance in lime-based plasters, renders and breathable construction systems. Their medium density and consistent 2-5mm grain size ensure a reliable mix that holds together well and applies smoothly.

Natural cork granules:

• Stay evenly suspended in lime and eco-plaster mixes
• Produce a consistent, workable texture
• Offer effective thermal and acoustic enhancement
• Improve breathability and flexibility within the coating
• Create a stable insulating layer ideal for restoration and eco-build applications

Our natural cork granules offer a consistent bulk density of approximately 5 litres per kilogram, making them easy to measure and predictable across different mixes. This helps plasterers, renderers and builders plan their materials accurately, ensuring a smooth workflow and consistent results on-site. Whether you're creating an insulating lime-cork plaster, a breathable render or an acoustic backing coat, the reliable litre-per-kg ratio makes batching straightforward and repeatable.

Bag Sizes:

• 1kg - approx. 5 litres
• 2.5kg - approx. 12.5 litres
• 5kg - approx. 25 litres
• 10kg - approx. 50 litres