IBA Aggregate

IBA Aggregate is produced from energy recovery facilities from non-recyclable domestic waste which would have in the past been sent to landfill.  The process releases the energy potential in waste so that it can be utilised to generate electricity via combustion, this will deliver significant environmental, social and economic benefits to the community. The IBA generated from this thermal treatment process is then recovered, processed and transformed into a manufactured aggregate for the UK`s construction sector.

IBA Aggregate is a sustainable and accepted alternative to Type 1, 6F4 and 6F5 capping and consists of fused clinker, ceramics, glass, stone and concrete.  It has been widely used in construction for over 20 years and has been approved by the Environment Agency, Highways England and local authorities with great success.  
IBA Aggregate can be used in two major applications.  Unbound, it can be used for bulk fill and sub-bases.  When bound, it is ideal for road paving and construction blocks.  

IBA Aggregate is available from Ardulafor supply as three grades for different applications:

  • Type 1 (IBAA) complies to the Specification for Highway Works Clause 803
  • 6F4 Capping (IBAA) complies with Specification for Highway Works 600 Series
  • 10/20mm (IBAA) drainage/pipe bedding aggregate complies with the WRAP Protocol and BS EN 13242


Advantages of using Ardula supplied IBA Aggregate: 

  • Lower Density - the IBA Aggregate is lighter than other comparative materials and one tonne therefore goes further in filling a void.
  • Competitively priced - as a recycled material it offers cost savings compared with primary material. 
  • High performance – the aggregate has Pozzolanic (cement-like) properties, enhancing its performance over primary aggregates.
  • Sustainably sourced - the material raw feed is from waste to energy plants that divert at least 95% residual municipal waste from landfill. The plants generate electricity for the community and reducing carbon footprint by producing a valuable secondary aggregate locally.

The IBAA cycle - how the road to waste leads to the waste in roads

Ardula removes waste Incinerator Bottom Ash on a daily basis, and transports it to the FortisIBA facility in Andover. Vehicles are reloaded with processed material, which is then returned to Kent for stockpiling, blending, and resale into the construction aggregate market

IBA Aggregate from Ardula in tippers and bulkers

For Prices – please call Ardula Sales on 01622 873300. Every enquiry is priced individually to ensure that the most accurate and competitive price is quoted, with the required geotechnical approval.
Deliveries – deliveries will be arranged for when the material is required on a vehicle suitable for the site conditions.
Approval - IBAA requires pre-approval to confirm that the intended delivery point is not impacted by environmental constraints. Customers do not have to change any working practices to use IBA Aggregates. Ardula, as an authorised supplier, manages any environmental approval on behalf of its customers.
Inclusions - the performance of the IBA Aggregate is not affected by the elements of deleterious materials from the recycling process. The Specification for Highways Works allows inclusions in recycled aggregates.


Advantages of IBA Aggregate


IBA Aggregate can only be used in suitable locations, and for suitable uses. Conditions for its use are provided by the Environment Agency (EA) in their Regulatory Position statement 247.

Duty of Care:

As an approved merchant supplier, we consider the suitability ofindivdual sites, based on key criteria such as environmental impact on groundwater protection zones, and work with the producers to take a case-by-case approach to give traceability and confidence:  The following key factors ensure that we meet our duty of care obligations


  • End of Waste Protocol 
  • Code of Practice
  • Environment Agency Position Statement
  • Environmental and Technical Pack
  • IBA Aggregate Sales Control
  • Material Safety Data Sheet
  • Site Suitability Assessment