Base Course Aggregate
HG Leach & Co produce and supply a range of basecourse aggregates suitable for highway and high traffic volume rural road construction. HG Leach can meet the rigorous specifications set by Transit New Zealand for highway construction including TNZ AP 40 and 65.
HG Leach also produce and supply NZTA quality basecourse aggregate suitable for use as site access metal or general site or road construction. General All Passing (GAP) 40 and 65 can be produced to specification for Local Authority and construction businesses alike. Along with the GAP products we also produce and supply a range of MAP graded aggregate that is typically used for vehicle access ways, tanker tracks and roading projects.
Laboratory test data for our basecourse materials are available by request.