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hi to answer your question the tarmac on a driveway should be no less than 60mm after rolled and a hardcore base(sub base) should be at least 150mm depending on ground eg deeper if existing ground is grass --tarmac alone costs around £20-£25 per sq met

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15y ago

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The typical depth for laying tarmac is between 2 to 3 inches. However, the specific depth may vary depending on factors like the type and volume of traffic expected on the surface, soil conditions, and climate. It is recommended to consult with a professional pavement contractor to determine the appropriate depth for your specific project.

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9mo ago
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Q: What depth should tarmac be laid?
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