Firth Flowable Fill Engineered Concrete

Firth Flowable Fill is a flowable mix that can be used as a substitute for conventional granular hardfill materials. It can be delivered by chute or pump, making it ideal for spaces with restricted access.

  • a low-strength mix of sand, cement, flyash and water
  • can be placed into large areas directly by chute or pump
  • ideal for backfilling utility trenches, for structural fill under foundations or floor slabs, or filling disused storage tanks
  • mix can be adjusted to suit your requirements
  • compressive strengths of 1 - 2.5 MPa after 28 days

Thermal Bedding

Thermal Bedding is a specialty solution for filling around heavy electrical conduiting. It shares the benefits of Flowable Fill™ but its higher strength and improved thermal conductivity gives greater protection to key services.

  • Category
    Concrete Cladding
  • Range
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About the

Firth is one of New Zealand's best known and most trusted trade names in concrete. They have been developing, manufacturing and delivering concrete and concrete products to New Zealanders for almost a century. 

90 year proud history

The history of Firth is part of the history of New Zealand. Firth's capability extends through the construction industry, roading & infrastructure, industrial and commercial projects to residential builds.

Industry leading

All of our products are formulated to meet strict NZ standards. Our engineers ensure Firth customers consistently receive delivery of the highest quality product that they can rely on. Our concrete products are tried and trusted so customers can be sure what we make, makes the grade. Always.

Our national, dependable brands include: Firth Certified Concrete®, Firth Masonry, Firth RibRaft® floors, Dricon® bagged concretes, mortars and sands.

Innovation that endures

From day one innovation has been at our core, but not at the expense of long lasting durability. In 1925, the 'original' Firth family with their entrepreneurial spirit created innovative concrete products that made life easier.

Today's wider Firth family still carries that same can-do spirit into today's market challenges. Our designers work alongside our engineers to ensure new designs will stand up to the rigors of time.

Kiwi Made

Like the people who manufacture them, our concrete ranges are all products of New Zealand. We employ 650 people spread across 70 plant sites throughout the country.

Firth's strength lies in its regional relationships delivering a quality service locally to loyal customers, every day.