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4-10mm LecaExpanded clay aggregate utilised as a decorative and moisture retentive sub-strateTitle-Leca is used as a sub-strate to roof-top gardensGenuine LECALECA, in stock, at our depot in Rugeley
Leca® 4-10mm Lightweight Expanded Aggregate
Product Code: 7890

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Price per pack£28.80£27.36Click to View
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LECA - General purpose expanded lightweight clay aggregate with a minimum of fines. Suitable for green roofs, hydroponics, chimney backfill and non structural lightweight concrete.


Pack Size: 25 ltrs Approximately 8kg
Note: Single packs delivered by courier are half the size of packs supplied on Multi-Pack pallets

Granule Size: Approx. 4-10mm.

Density: LECA® is a super-lightweight aggregate with a dry bulk density of approximately 350 kg/m3.

Typical Moisture Content:
When saturated for at least 24 hours, 10-20mm LECA® is likely to absorb approximately 30% by weight of water with a resultant bulk density in the order of 500kg/m Our products are generally supplied in a dry state, however, please specify at the point of ordering if this is important to your application.

Description:
This is a genuine and original premium LECA® product manufactured by Saint Gobain and distributed in the UK by Specialist Aggregates. This 25ltr pack is offered for small projects, trial and research purposes.

Application & Use:
Top quality clean general purpose expanded lightweight clay with a minimum of fines. The product is a dark grey/brown colour and offered for use in situations where aesthetics are not a prime consideration, in particular:

As a substrate in hydroculture / hydroponics, and blended with other growing media to improve drainage and provide insulation.

Green Roofs: The web contains advice on many and often contradictory methods for producing green roofs. Nevertheless our 4-10mm Leca® provides the definitive base for lightweight soils. For bottom or peripheral drainage we would recommend the 10-20mm grade Leca®

As a component in lightweight concrete. and as a backfill to structures especially for restricted areas for instance backfill to chimney linings where this product's small size and spherical shape allow for ease of placement.

Expanded clay granules are made by pelletising and firing selected clays in a rotary kiln at a very high temperature. As it is fired, the organic compounds in the clay burn off forcing the pellets to expand and become honeycombed while the outside surface of each granule fuses to give a ceramic shell. The resulting granules are lightweight, porous, and have a high resistance to crushing.

Being a natural product expanded clay aggregate contains no harmful substances, it is inert with neutral pH, The granules are resistant to frost and chemicals, and will not break down in water. They are also non-combustible and have excellent sound and thermal insulation properties, further they can be used with cement to make a lightweight concrete mix suitable for fake rocks, theatre props and lightweight repairs.

Particle Size: Typically:
Sieve Size mm % Passing
14 100%
10 99%
8 81%
4.0 9%
0.25 1%
Chemical Composition:
Principal components typically:
Chloride 0.04%
Acid Soluable sulphate 0.5%


Price Promise:
All prices in include UK VAT and delivery to mainland locations in England, Wales and Southern Scotland - There are no hidden charges on checkout.

Happy to export worldwide - please enquire for shipping rates

Logistics:
This product option is packed in an easy to handle weatherproof pack within a cardboard box.

Boxes are delivered by national couriers. Please advise during checkout or contact our office if you have specific delivery requirements or concerns.

Both the inner plastic pack and the outer box can be recycled via normal household collections.

Specify: 4-10mm Leca from Specialist Aggregates.

Product Code: 7890

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Alternative Volumes 
Leca® 4-10mm Lightweight Expanded Aggregate
Leca® 4-10mm Lightweight Expanded Aggregate
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12 Pack Pallet
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Leca® 4-10mm Lightweight Expanded Aggregate - Collect
Leca® 4-10mm Lightweight Expanded Aggregate - Collect
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