Pothole Filler NZ — Buyer's Guide for 2026 (Best Products, Real Costs, When DIY Works)

Every pothole filler product on the New Zealand shelf in 2026, with real prices, service-life expectations, and an honest call on when DIY is the right move and when it isn't.

If you're a homeowner with one or two driveway potholes you want to fill yourself, this guide is the comparison. If you've got a multi-defect driveway, a commercial site, or anything that needs to look professional, skip to our cost guide for contractor-grade pricing.

EZ Street — the NZ workhorse

Manufactured under licence in New Zealand by Fulton Hogan. 20 kg bag is the consumer pack, available at Bunnings, Allied Materials, Central Landscapes and Hirepool for ~$50 (May 2026). Polymer-modified cold-mix — applies wet, applies cold, takes traffic within an hour of compaction. 3–5 year residential service life if applied with proper edge prep. The default recommendation for most DIY driveway potholes.

Cemix Bitupatch — NZ-made alternative

Domestic NZ manufacturer Cemix Products Ltd (Onehunga, Auckland). 20 kg bag widely available at Bunnings and Central Landscapes for ~$45–50. Polymer-modified cold-mix specification, applies in 5–30°C ambient temperatures. Similar 3–5 year service life to EZ Street. Slight advantage on supply continuity in NZ — it's not a US-licensed product, so no exchange-rate or import-route risk.

QPR — imported via Mastermix

QPR (Quality Pavement Repair) has been distributed in NZ by Mastermix since 2008. 20 kg bag ~$55–60, sold direct via mastermix.co.nz. Polymer-modified, can be stockpiled in an uncovered outdoor stockpile (unusual for cold-mix). Slightly more expensive than EZ Street or Cemix at retail; the same 3–5 year service life when applied properly.

UPM — the harder-to-find option

UPM (Unique Paving Material, US-manufactured) has no confirmed NZ distributor in 2026. Some Australian-imported stock circulates via paving-trade suppliers occasionally. Specification is similar to EZ Street and QPR. If you can find it, the price will be 10–20% higher than the locally-stocked alternatives due to import freight. Skip it for DIY unless your other options are out of stock.

Generic bagged cold-mix — cheap but limited

Builders' merchants sell un-branded cold-mix asphalt for $35–45 per 20 kg bag. Not polymer-modified. Service life on a residential driveway: 6 months to maybe 2 years. The honest call on generic cold-mix: it works as a temporary patch (e.g. a tripping hazard while you wait for permanent repair scheduling), but if you want the repair to last, you're better off paying the extra $5–10 per bag for EZ Street, Cemix Bitupatch or QPR.

Best aggregate for filling potholes

Pothole filler is binder + aggregate as a single pre-mixed product. You don't pick the aggregate separately for DIY — the polymer-modified cold-mix products above are pre-engineered with the right aggregate grading (usually 5–7 mm crushed stone). For larger DIY repairs that need a sub-base build-up (defects >100 mm deep), use compacted GAP 20 or AP 20 road base (basecourse aggregate) for the lower layers, with 50–70 mm of the polymer-modified mix as the surface course on top.

Cheapest way to fill a pothole

Truly cheapest: a $35 bag of generic cold-mix, hand-tamped, no edge prep. Six-month service life realistic. Lowest cost per repair-event but you'll repeat the work twice a year. Cheapest-that-lasts: a $50 bag of EZ Street, 20 minutes of edge prep with a chisel and brush, hand-tamped firmly or driven over with a car wheel to compact. Two-to-three-year service life realistic, $50 total cost per repair-event.

What you need beyond the bag

A sharp masonry chisel ($15) or a Stihl-style cut-off saw rental ($60/day) to clean the edges. A stiff brush ($10) and a small tin of bitumen emulsion tack-coat ($25) for the cut edges. A hand-tamp or a plate compactor rental ($80/day) for compaction. Total ancillaries: $50–110 for one-off DIY. Combined with one bag of EZ Street or Cemix Bitupatch: a $100–160 total DIY budget for one defect. That's roughly 3× cheaper than the cheapest contractor quote ($480 Tier 1 fixed) but takes 2–3 hours of your time and skips the warranty.

When to skip the DIY

Anything over 0.25 m² or 50 mm deep — it's a Tier 1+ job that justifies contractor work. Body-corp or commercial sites — you need the photo report and warranty for ACC / insurance / committee files. Pre-sale driveways — the finish quality matters and DIY rarely meets the standard. Drive-thru / heavy-vehicle sites — HMA is needed, which can't be DIY'd. Anywhere a $50–160 DIY budget would be a false economy given the actual repair scope.

Frequently asked questions

Which is best: EZ Street, Cemix Bitupatch, or QPR?

Technically interchangeable for DIY use. EZ Street has the strongest brand recognition and widest NZ availability. Cemix Bitupatch is the NZ-manufactured option with the most stable supply chain. QPR has the longest stockpile life if you're buying a few bags and using them over a year. Pick whichever is closest to your nearest Bunnings or Central Landscapes — the service-life difference between the three is within margin of error.

Will pothole filler work on a concrete driveway?

Cold-mix asphalt won't bond reliably to concrete — different material, different thermal expansion. For concrete potholes use a concrete patch compound (Sika, Bostik, Selleys all have products). Asphalt and concrete are entirely different repair scopes; don't mix them.

Can I heat cold-mix asphalt to make it last longer?

No — heating polymer-modified cold-mix degrades the polymer binder, which is the whole point of the product. The cold-mix is engineered to bond at ambient temperature. If you want hot-mix performance, hire a contractor with a hot-box truck. Don't try to convert cold-mix into hot-mix on a barbecue or in an oven.

Where to buy EZ Street or Cemix Bitupatch in NZ?

EZ Street 20 kg bag: Bunnings nationwide, Allied Materials, Central Landscapes, Hirepool (for hire-pickup convenience). Cemix Bitupatch 20 kg bag: Bunnings, Central Landscapes, plus direct from Cemix Products Ltd in Onehunga, Auckland for bulk orders. QPR direct from Mastermix at mastermix.co.nz with national delivery.

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Decided DIY isn't worth the time? Send a photo via the Rapidpatch quote form or fix@rapidpatch.co.nz. Fixed price from $480 for a single defect, 12-month warranty.

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