Fixing Potholes in Concrete

By the Permanent Pothole Solutions team · Updated 26 October 2026

It’s a practical fix where a fast, permanent repair matters more than matching the colour — such as yards, industrial slabs and the joins between concrete and bitumen.

Step by step

1. Clear the hole. Remove loose stones, dirt and broken asphalt. Standing water can stay — the mix displaces it as it’s compacted.
2. Build up deep holes. Lay and compact a base course of sand and stone first.
3. Pour. Tip Asphalt in a Bag straight from the bag and spread it evenly.
4. Over-fill slightly. Leave the mix a little proud of the surface to allow for compaction.
5. Compact, crown, compact again. Tamp firmly, shape a slight crown, then compact once more. Open to traffic immediately.

Where bitumen meets concrete, see patching bitumen to concrete.

Getting a good bond

Clean the surface of dust, loose material and old filler, then compact firmly so the mix is pressed against the concrete. The co-polymer in Asphalt in a Bag is what lets it adhere to concrete, steel and wood as well as asphalt.

Choosing the right gauge

Coverage at a glance

• 15kg bag/bucket ≈ 0.13 m² at 50mm
• 20kg bag/bucket ≈ 0.17 m² at 50mm
• 1 tonne bulk bag ≈ 8.7 m² at 50mm

Need an exact number? Use the Asphalt Calculator.

Why Asphalt in a Bag

• Permanent. Expands and contracts with the road surface, so the patch moves with the pavement instead of breaking away.
• Cures on impact. Curing is activated by compaction — tamp it or roll it and it sets.
• Bonds to anything. Adheres to asphalt, concrete, steel and even wood.
• Any weather. Apply from -26°C to 49°C, in rain, or straight into a pothole full of water.
• No tack coat. No pre-coating or priming. Open, pour, compact.
• Traffic-ready. Application is up to five times faster, and it can take traffic immediately.

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