6KG Cork Granules - Corkbark UK

Cork Granules 10kg (50L)

£94.99
£94.99
Tax included.

10kg Natural Cork Granules - Approx. 50 Litres (2-5mm)

Our natural cork granules are sustainably sourced from cork oak trees and processed to provide a clean, high-quality, medium-density material suitable for a wide range of practical and creative applications.

Key Characteristics

  • Natural (non-expanded) cork
  • Approx. 5 litres per kg (medium-density)
  • 2-5mm grain size

Benefits

  • Lightweight yet stable - easy to handle, pour, layer or blend
  • Excellent natural insulation - strong thermal and acoustic performance
  • Moisture-resistant & breathable - supports airflow and resists mould and decay
  • Clean, safe and low-dust - ideal for indoor environments and habitat use
  • Long-lasting & reusable - robust granules that hold their shape
  • Sustainable - harvested from renewable cork oak with minimal impact

    Applications

    • Terrariums & Habitats: Natural substrate for reptiles, amphibians and bioactive setups
    • Gardening & Interiors: Planter toppers, mulching and natural decorative finishes
    • Construction & DIY: Suitable for lime-cork mixes, breathable coatings, thermal and acoustic layers, and general natural aggregate applications in restoration and eco-build projects.
    • Crafts & Model Making: Adds texture and realism to dioramas and creative projects
    • Practical Filling: Eco-friendly loose-fill, void fill and lightweight backfill material

    Natural vs Expanded Cork

    These granules are natural cork, not expanded cork. Natural cork is denser, stronger and more versatile, offering superior durability and stability for substrates, fillers, mixes and craft applications.

    Available in kg bags, with larger trade and pallet quantities available on request.

    All orders are supplied directly from our UK warehouse for fast, reliable delivery.

    • 5 stars: 6 (86%)
    • 4 stars: 1 (14%)
    • 3 stars: 0 (0%)
    • 2 stars: 0 (0%)
    • 1 star: 0 (0%)
    Some of the reviews shown are from related products the merchant grouped with this one.
    S
    Sarah

    Great quality

    A
    Anonymous

    In this incredible heat, I’ve sprinkled it over carrots seeds to be grown on pots, followed by a jolly good water. I’m hoping it will keep the soil surface cooler and even damp! Nice product to use, I’ll let you know!

    J
    JamCo

    Very easy ordering process and delivered promptly.

    Haven’t used it yet but I’m being plagued by emails reminding me to review it so I hope this will put and end to those. I have every expectation that it will work perfectly as a replacement for perlite and vermiculite

    I
    Ian

    Great stuff i will be using this from now on

    t
    trevor

    It was recommended on gardener's world
    To use cork instead of vermiculite or perlite
    As it is more user friendly, and can be reused
    If you are careful .
    It was delivered as promised.

    P
    Philip

    Excellent, prompt response

    A
    Abi

    Delivery good, I washed it as recommended before use and have used it on seed trays. So far so good. Nice clean product. Going to use it in a cutting mix next. It has a better look than pearlite or vermiculite.

    FAQs

    How long is delivery?

    Can I request a specific size?

    Do you offer bulk or wholesale pricing?

    What if you don’t have the size I need?

    Do you ship outside the UK?