How Long Does Cold Mix Asphalt Last?

By the Permanent Pothole Solutions team · Updated 26 October 2026

That long shelf life means you can buy ahead and keep stock ready for when damage appears.

Storage tips

• Keep bags and buckets sealed until use
• Reseal part-used packs tightly
• Use the oldest stock first

What’s in Asphalt in a Bag

A ready-to-use pre-mix of selected aggregates, bitumen and a co-polymer. The polymer drives curing on compaction and makes the mix adhere to itself and to asphalt, concrete, steel and wood. A high fines content (sand and cone dust) fills voids, keeping air and water out — which is why you can use up to 20% less than other products.

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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