Precast concrete drainage products, covers, and edging
Located in Kapiti and servicing the lower North Island

Kapiti based Rocka Concrete - your trusted source for quality precast concrete drainage products


Rocka Concrete supplies top-quality precast concrete drainage products from Wellington to Manawatu and throughout the lower North Island. We have decades of experience, and are dedicated to providing a wide range of precast concrete supplies to cater to various needs. Our customers range from drainage contractors and farm owners to homeowners, builders, and subdivision developers. 

Rocka Concrete manufactures products onsite, allowing us to customise products to your specific needs. Our range of products include manhole adjustment rings, gully surrounds, soak rings, sump bases, round sumps, sluice valves and wing walls.

Contact us to find out more.

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From concrete gully surrounds to manhole rings and wingwalls, Rocka Concrete can manufacture and supply it

  • Wide range of precast concrete products manufactured onsite
  • Standard sizes and custom sizes available
  • Robust quality control processes ensure high quality product standards
Based in Kapiti and servicing the Lower North Island from Wellington to Manawatu

Wide range of precast concrete products available

All products are manufactured to NZS 3109:1997


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The advantages of concrete drainage products


Rocka Concrete have robust quality control processes to ensure our precast concrete products offer:

  • durability - can withstand heavy loads, adverse weather conditions, erosion, and even fire, ensuring long-lasting reliability.
  • watertightness - prevents leakage of fluids.
  • structural integrity - can resist forces of pressure and movement so can provide stability.

Contact us today, and let us assist you in finding the ideal pre-cast concrete solutions for your specific needs. We also manufacture precast concrete covers, lids and tops, standard paving slabs, and a range of landscaping edging products.


Rocka Concrete's precast concrete drainage products are:

  • cost effective - concrete's inherent durability and low maintenance requirements make it a cost-effective choice in the long run.
  • environmentally friendly - concrete is a sustainable material made from readily available natural resources like water, cement and aggregate.
Precast concrete drainage products, covers, and edging
Paraparaumu