LECA^®LWA - Lightweight expanded clay aggregate specifically graded to provide for ease of installation when used as chimney liner and flue backfill. Delivered in robust 50ltr packs weighing approximately 15kg.

Pack Volume: 50 ltrs. Weight per pack approximately 15kg

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

Granule Size: Approx. 4-10mm.

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

Water Saturated Density:
When saturated for at least 24 hours, 4-10mm LECA^® LWA is likely to absorb approximately 30% by weight of water with a resultant bulk density in the order of 500kg/m³

Description:
Genuine and original premium brand LECA^®Lightweight Expanded Clay Aggregate distributed prepacked throughout the UK by Specialist Aggregates.

Delivered in robust 50ltr packs on a pallet for specific use as a backfill to lined chimney and flue installations.

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.

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

Inert Backfill: Especially for restricted areas, for instance backfill to chimney and flue linings where the product's small size and spherical shape together with convenient and strong packaging allow for ease of placement.

Installers tell us that Leca® LWA has advantages over vermiculite based products in so far as the material will not clump in damp conditions, or blow away during installation.

Whilst every chimney will be different our personal experience on backfilling a lined chimney on a typical 1930's town house required one 50ltr pack per metre of chimney.

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

* Specialist Aggregates' Price Promise:
All prices shown include UK VAT and delivery to 90% of UK locations - Read More. - There are no hidden charges on checkout.

We export throughout Europe and Worldwide - please enquire for shipping rates.

Quick Contact:
WhatsApp your enquiry and images to 07484 022898

Rocks in a Box^™ For protection and security your product will be shipped in a weatherproof pack within our easy-to-handle double walled 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 or industrial/commercial collections.

Specify: LECA^® Chimney Backfill (50ltr Packs) Supplied by Specialist Aggregates.

Product Code: 7890/CB

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