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LECA<sup>®</sup>LWA10-20mm Leca<sup>®</Sup>LWA utilised as a moisture retentive drainage layer on greenhouse stagingLeca<sup>®</Sup>LWA utilised as greenhouse bench toppingLECA<sup>®</sup>LWALECA<sup>®</sup>LWA being delivered from our Midlands based depot10-20mm Prepacked Leca<sup®</Sup>LWA
Leca® LWA 10-20mm Lightweight Expanded Clay Aggregate - Click & Collect
Product Code: 7892

3+ 6+ 
Price per pack£17.40£15.00£12.60


Total £17.40recalculate total
Inc VAT, but excluding delivery

LECA® LWA - Industry standard lightweight expanded clay aggregate in a 10-20mm grade Supplied pre-packed for collection to provide lightweight horticultural substrate and construction infill in particular where access is difficult or restricted.

Pack Volume: 50 ltrs (Approximately three times the volume of a pack of "normal" aggregates) Weight per pack approximately 15kg.

Pack size: Approximately 800mm x 400mm x 150mm.

Granule Size: Approximately 10-20mm.

Density: LECA® LWA is a super-light-weight aggregate with a dry bulk density of approximately 280 kg/m3.

Water Saturated Density:
When saturated for at least 24 hours, 10-20mm LECA® LWA is likely to absorb approximately 30% by weight of water with a resultant bulk density in the order of 500kg/m3

Genuine and original LECA® LWA manufactured by LECA(Saint Gobain) and distributed prepacked in the UK by Specialist Aggregates.

This 50ltr pack is offered for small projects, trial and research purposes.

Expanded clay granules are made by firing selected clay in a rotary kiln at a very high temperature. As it is fired, the organic compounds in the clay vaporise 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 good 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 non-structural lightweight concrete suitable for fake rocks, theatre props and lightweight repairs.

Application & Use:
Expanded lightweight clay with a minimum of fines backed by the worldwide Leca® brand. The product is a dark grey/brown colour and offered for use in situations where aesthetics are not a prime consideration, in particular:

Horticulture: As an inert substrate for 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 10-20mm Leca® LWA provides the definitive product for bottom and peripheral drainage. To create lightweight soils we would recommend 4-10mm grade Leca® LWR.

Backfill to structures: Especially for situations with restricted access, and for providing lightweight fill to planters .

Price Promise:
All prices shown include VAT - There are no hidden charges on checkout. This price option applies for personal collection from our Rugeley based depot (WS15 3HF) it does not include delivery.

Particle Size:
Sieve Size mm % Passing
20 100%
14 74%
10 17%
8.0 3%
0.25 1%
Chemical Composition:
Principal components typically:
Chloride 0.04%
Acid Soluable sulphate 0.5%

Compaction: Typically (above the water table) the product is likely to compact by 8-12% when poured from the pack to its final in situ compacted state.

Moisture Content:
This product is generally supplied dry, however, please inform our office if this is a specific requirement for your application

Specify: 10-20mm LECA® LWA (50 ltr Packs) Supplied by Specialist Aggregates.

Orders placed for personal collection: You will be advised your collection reference by e-mail. For personal collection orders placed by telephone (01 889 580660) our staff will be able to provide an immediate collection reference.

Personal collection is from: Specialist Aggregates, Unit 5 Rydal Estate, Colton Road, Rugeley, Staffs WS15 3HF.

Collection Logistics: Aggregates will be supplied in easy to handle recyclable plastic packaging. Rocks and boulders will be supplied loose. Products will be loaded as appropriate by hand or using mechanical means into customer's vehicles.

Personal collection times: Monday to Friday 10.00 am to 12.30pm – 2.00 pm to 4.30 pm. Price quoted for this item relates to personal collection only. Extra-over charge for collection by customer arranged courier £15.60 per pack (inc VAT).

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Leca® LWA 10-20mm

Leca® LWA 10-20mm

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