Renovation and the Home

LECA® LWA can be used in all elements of construction from foundations to chimney fill.

Civils & Infrastructure

Leca® LWA is used extensively as a lightweight aggregate for civil engineering and structural applications, such as Rail, Highways and Bridges.

Water Management and Reducing Gas Emissions

Leca LWA can be used to manage the rainwater from a catchment. Water interacts with Leca LWA in a way that allows the material to provide water detention.

Agricultural Lagoon Fill

Reduce Ammonia and Methane with Leca® Aerotop

Leca® Aerotop is a scientifically proven solution to tackle the issue of odour at their source and has been proven to significantly reduce harmful gas emissions. This innovative material floats on the surface of lagoons, storage tanks and run off areas to control the release of Hydrogen Sulphide (H2S), Ammonia, Methane and other odours*

Leca® Aerotop is an innovative ceramic bulk material that can be added to the surface on a slurry tank or lagoon to form a floating layer. Leca® Aerotop is a product that tackles the issue of odour at their source and has been proven to significantly reduce harmful gas emissions.

This innovative material floats on the surface of lagoons, storage tanks and run off areas to control the release of Hydrogen Sulphide (H2S), Ammonia, Methane and other odours*.The Scientific Innovation of Leca® AerotopThe gas emission removal system is created by a catalyst reaction on the Leca® Aerotop surface, which contains iron oxide and other metal oxides. This means that the emission removal solution and performance will last – preventing the release of harmful gases and odour into the surrounding area.The lightweight nature of Leca® Aerotop means that the aggregate simply floats on the surface of the lagoon or slurry tank, making it a cost effective, quick and simple solution in the prevention of harmful gases and odour.

The iron oxides in the clay mineral structure acts as a catalyst for chemisorption of Hydrogen Sulphide (H2S), Ammonia, Methane and other organic compounds. The Leca® Aerotop floating cover solution can significantly reduce the capital costs involved in digestate storage solutions, while offering significant financial returns through the retention of nitrogen.

Leca® Aerotop also reduces the financial costs required for the on-going maintenance required for alternative types of covers such as floating plastic covers and other fixed covers, which depending on the size of the lagoon can be extremely expensive, time intensive and difficult to install.

We have accumulated a wealth of experience over the past 20 years in successfully transporting and delivering Leca® Aerotop to diverse agricultural projects throughout the UK and Ireland. Depending on the project, we can source the vehicles that best suit the project requirement. This also includes the popular and innovative pneumatic blowing delivery, which can deliver Leca® Aerotop in difficult terrain and can be blown in at a distance of up to 40 metres allowing for greater flexibility and aiding environmental consideration to a variety of access and constructional challenges.

This can be pneumatically delivered to provide immediate coverage to a lagoon. Another popular method of delivery is through tote bags (2.2m3 volume), which again make it easy to transport onto site.

How can Leca® Aerotop help?

Leca® Aerotop is the only lightweight aggregate with a granularity of 10-20 mm and has a bulk density that does not exceed 300 kg / m3. As suggested by the Department for Environment Food & Rural Affairs (DEFRA), in the Government document ‘Code of Good Agricultural Practice (COGAP) for Reducing Ammonia Emissions’, using lightweight expanded clay aggregate as a floating cover solution can provide an effective protective layer against dangerous emissions including Hydrogen Sulphide (H2S), Ammonia and Methane into the surrounding environment.

Cost effective, Simple and Quick solution

Manufactured by Leca in its unique kilns, Leca® Aerotop is a Lightweight Expanded Clay Aggregate that offers many fundamental properties which make it a perfect solution for lagoon cover. Leca® Aerotop is a flexible and quick solution helping to reduce the build-up of crusting.

A 10cm layer of Leca® Aerotop poured over slurry limits the emission of harmful gases and foul odours by up to 85%*.

Advantages:

Easy to implement - just pour Leca® Aerotop over the slurry
Long lasting solution - fully resistant to chemical compounds
Lightweight - no excessive load on the tank construction
Cost reduction - less expensive than traditional reinforced concrete covers and tent roofing.
Reduces foul smell and gas emissions by up to 85%
Protects and keeps nutrients within the slurry