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Porirua City is at the orange setting of the traffic lights protection framework. This means some changes to the way we work and live, as protections are in place to help minimise the spread of Covid-19 in the community. Find out more

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Resurfacing Porirua's roads

You'll find information about Porirua's annual road resurfacing programme on this webpage

Resurfacing Porirua's roads

Porirua City Council maintains around 251km of roading network through an annual resurfacing programme and on-going maintenance.

Chip seal is used in most instances, as per Council policy, to improve the life and value for money of our roads.  

Asphalt is used in areas of high-stress such as cul-de-sac turning circles and busy intersections.

**Note: Residents are given five days notice of planned works (which can be weather affected) and roads are swept 48 hours and then 7 days after being chipsealed to allow time for the chips to bed in.  Please treat the roads with care during this time.

This year's road sealing programme

Road resurfacing 2022.jpg

2021/2022 resurfacing programme Q & A

Answering your questions

We’re aware there have been a number of questions raised about recent resurfacing work in Navigation Drive, Joseph Banks Drive and Discovery Drive, Whitby and other parts of the city. We’ve checked in with our contractors and below are some questions and answers to help explain the work.

The product being used is called Enviro Shield, and it’s an alternative to chipseal. This product is used to rejuvenate existing asphalt which is beginning to deteriorate, and protect it from potential water infiltration which affects the structural integrity of the road. Enviro Shield extends the life of the current seal.

Like all road resurfacing, it takes time for the product to embed to the existing road surface so the road is swept after 48 hours and again after seven days. Enviro Shield uses a fine sand, to imitate a slurried surface, and this can move around, especially if vehicles travel faster than the 30km/h temporary speed limit.

This was used last year on Moana Rd and Spinnaker Dr and its success on these high use/stress intersections was a driver for its use on Navigation Dr, Joseph Banks Dr and part of the Discovery Dr resurfacing.

During the sealing of a road, we require sumps to be protected from run-off and loose materials using sump filters.

Prior to sweeping the contractors dampen the surface with water to limit the spread of dust

We are focusing on restoring our busiest roads first. We call these roads our primary collectors - which make up about 50% of our network and carry approximately 90% of traffic.

Navigation Drive is a busy through route, particularly with the opening of Te Ara Kāpehu (formally the Whitby Link Road). While it may look ok, a lot of Navigation Drive has not been resurfaced for many years, so this work is designed to prolong the life of our key transport assets and thus prevent future, more expensive repairs.

2021-2022 road sealing programme

We are planning to resurface the following roads, or sections of road, during this year's summer resurfacing programme


  • Whitford Brown Ave: from the intersection at The Fjord to Routeburn Ave (Asphalt)


  • Raiha St: from # 23 - 60 (Chipseal)


  • Papakowhai Road: from # 4 to Brora Cres (Chipseal)

Porirua City Centre (all asphalt)

  • Lyttleton Ave: between Hagley St & Heriot Drive intersections (excluding Titahi Bay Road)
  • Norrie St: from # 5 to Lyttleton Ave roundabout
  • Wi Neera Drive: from Parumoana Road roundabout to Titahi Bay Road intersection
  • Roundabouts (all asphalt)
    • Lyttleton Ave & Norrie St roundabout
    • Lyttleton Ave & Parumoana St roundabout
    • Parumoana St & Norrie St roundabout
    • Walton Leigh & Trask Place roundabout


  • Grays Road: from # 2 - 20 (Asphalt)


  • Mungavin Ave & Martin St roundabout (Asphalt)


  • Discovery Dr: from # 69G - 132 (Asphalt)
  • Joseph Banks Dr: from # 71 - 91a (Chipseal)
  • Navigation Dr: from # 2 - 106 (Enviro Seal)

*Please note, Kenepuru Drive and Semple St have been moved to next year's resealing programme due to works planned on both roads this year. This work would have impacted on the new surface so the resurfacing will now be carried out once the construction works are completed.

Previous road sealing programmes

Road sealing was completed on the following roads in the 2020-21 programme, which took place during February and March 2021.

Moana Road, Plimmerton:

- Chipsealing between numbers 1 & 59

Postgate Drive, Paremata:

- Asphalting: SH58 to Bosun Tce

- Asphalting: Postgate Drive and Omapere St intersection

Spinnaker Drive

- Chipsealing between numbers 16 and 77

- Asphalting of the intersection with Discovery Drive

New approach to resealing intersections for 2021 programme

Asphalting - The structural asphalt being used for busy intersections in this year’s resealing programme is a “new” superior performing product that is the same as the product used on SH58 and Centerport. It has been intentionally designed to cope with poorer road subgrade commonly found on the Porirua network to ensure a longer-term result. The cost difference is insignificant, and it will result in a longer lasting finish that will be better value over its whole of life.

Chip sealing - A new approach to chip sealing some of Porirua’s less busy intersections will be used this year after a trial showed it was effective at reducing chip loss caused by turning vehicles. The new seal is a chip and sand seal combination (a type of Cape Seal), which looks lighter than standard chip seal. It involves applying a two-coat chip seal, followed by a polymer modified bitumen emulsion and a material known as AP5 or crusher dust. This material is less than 5mm in diameter. It can take time to settle and requires a thorough sweep to remove the fine chips and dust, so a standard 30km speed restriction will remain in place during that time. The new seal is more economical than using asphalt, which will still be used on key intersections. We are sharing the trial results with other Councils, with immediate interest from Wellington City.

The following roads were resealed during the 2019/20 resealing programme

Ascot Park

  • Stipulate Place

Cannons Creek

  • Bedford Street
  • Calliope Crescent


  • Awarua Street


  • Fernhill Drive

Pukerua Bay

  • Toenga Road
  • Taumata Road
  • Sea Vista Drive
  • Downs View Place
  • Teihana Road East

Titahi Bay

  • Jillett Street
  • Te Puke Street
  • John Street
  • Gloaming Hill
  • Whanake Street
  • Wright Street
  • Pikarere Street
  • Richard Street


  • Cannon Lane
  • Keel Place
  • Spyglass Lane
  • Staysail Place
  • Shackle lane
  • Barque Crescent
  • East Albatross Close (2nd coat)
  • Bowsprit Way


  • Ernest St
  • Mitchell Grove
  • Ash Grove
  • Champion St
  • Spruce Grove
  • Haunui Street
  • Mungavin Ave


  • Coroglen Rise
  • Plimmerton Drive

Road sealing to optimise the life of Porirua's roading network

Porirua’s annual resealing programme looks to optimise the life of the city’s roading network through cost effective, value for money, maintenance.

The programme is an integral part of the city’s asset management strategy. It is developed from the city’s 30-year forward works programme, which is prioritised through an annual condition rating of the entire network; looking at its age, defects, maintenance costs and future maintenance risks.

Chip seal vs Asphalt

Chip seal is considered the best option in most reseal situations in terms of efficiency and function.

Asphalt surfacing is preferred in high-stress areas such as sharp turns, busy intersections and steep grades.

It is important to note that asphalt surfacing is six times more expensive than chip seal but does not give six times the life. It is also more expensive to maintain.

Chip seal consists of a membrane layer of bituminous material followed by stone chip. There are numerous types of chip seal and individual designs to determine the right one to use are done for every road section.  The design takes into consideration the current roughness of surface, the volume of average annual daily traffic and likely stress to ensure the final chip seal design used delivers sufficient waterproofing and skid resistance. 

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