Inert material is a construction or demolition waste which does not undergo any significant chemical, physical or biological transformations. These materials do not dissolve, burn or react in a way likely to give rise to environmental pollution or harm to human health. These qualities make inert materials ideal for construction. At our recycling plant, construction waste is first treated and then converted into recycled aggregate. Our recycling plant is operated under the permit (EPR/KB3997TQ) granted by Natural Resources Wales.