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Flowable fill

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

Product Documents

FIR 21025 Certified Ready Mixed Concrete Warranty
Firth Certified Concrete Building Warranty pdf 27 KB
Flowable Fill Brochure 1
Firth Flowable Fill Brochure pdf 5.6 MB
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Contact us

0800 CONCRETE

FAQs

0800 CONCRETE (0800 2662 7883) is our dedicated line for concrete orders through the country.

Click here to find a plant near you.

  • 6 wheelers = 5m3
  • 8 wheelers = 6.4m3
  • 10 wheelers = 7m3

3m3

Between 9m — 12m long (2.8m — 3m wide).

3.6m in height.

  • Small pump 26m reach 
  • Medium 28m reach
  • Large 37m reach

No, see the Firth website for our full Elements colour range. Any other colour oxides you supply can be added to the mixing bowl onsite.

Most plants up to 100m3 an hour depending on mix design.

Yes, our plant managers can carry out any site checks required for truck access (when given a few days' notice).

Anything that's 1 hour or more out of zone.

  • For DIY/homeowners we have an online order and estimation service, click here to access.
  • All commercial queries, please email info@firth.co.nz

No, you will need to engage a contractor or DIY to do this. We can supply some recommended contractors in some regions — email info@firth.co.nz for a list of local contractors.