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Product supplied securely wrapped on a pallet4-10mm LecaExpanded clay aggregate utilised as a decorative and moisture retentive sub-strateTypical application for Leca® in lightweight Green roof constructionGenuine LECALECA, in stock, at our depot in Rugeley
Leca® 4-10mm Lightweight Expanded Aggregate
Product Code: 7890

 6 Pack pallet:   £125.76 Inc VAT and delivery 
 12 Pack Pallet:   £169.80 Inc VAT and delivery 
 21 pack Pallet - One m3:   £227.16 Inc VAT and delivery 
 30 Pack Pallet:   £299.52 Inc VAT and delivery 



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 Volume: 50 ltrs. (Approximately 14kg when dry)

Pack size: Approximately 800mm x 400mm x 150mm.
Note: The packing configuration on the one m3 pallet allows for 21 packs which supplies an actual volume of 1.050m3

Coverage: One bag will cover approximately 1 Sqm at 50mm depth.

Granule Size: Approx. 4-10mm.

Density: LECA® is a super-lightweight aggregate with a dry bulk density of approximately 280 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. Our products are generally supplied in a dry state, however, please specify at the point of ordering if this is important to your application.

This is a genuine and original premium LECA® product manufactured by Saint Gobain in Denmark and distributed in the UK by Specialist Aggregates.

Application & Use:
Top quality clean general purpose expanded lightweight clay aggregate 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 the product's small size and spherical shape allow for ease of placement.

Expanded clay granules are made by firing selected clays in a rotary kiln. 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:
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

This product option is supplied packed in safe and easy to handle weatherproof packs stacked on a wooden pallet. Packs are stretch wrapped onto the pallet for added protection and security during delivery.

Pallets are delivered by national couriers and off-loaded onto a level hard-standing using vehicle tail-lift and pallet truck. Please advise during checkout or contact our office if you have specific delivery requirements or concerns.

Both the immediate product wrapping, the stretch wrap and the wooden pallet can be recycled.

Specify: 4-10mm Leca from Specialist Aggregates.

Product Code: 7890

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Bulk Loads Available
Contact our sales office for pricing
T: 01889 580 660
E: Sales@specialistaggregates.com
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