How thick is Tarmac for Car Park Surfacing?

Optimal Tarmac Thickness for Car Park Surfacing

When it comes to creating durable and long-lasting car park surfaces, the thickness of tarmac plays a crucial role. Whether you’re starting from scratch or overlaying an existing surface, understanding the right thickness is key to ensuring the longevity and safety of the car park.

1. Car Park Surfacing from Scratch

If you’re constructing a car park from scratch, a thicker layer of tarmac is necessary to handle the weight and frequent use by vehicles. Typically, for new constructions, the recommended thickness of tarmac is 100mm. This thickness ensures a robust surface capable of withstanding heavy loads and frequent traffic, making it ideal for busy car parks.

2. Overlaying an Existing Surface

For existing car parks that require resurfacing, an overlay can be applied. This process involves laying a new layer of tarmac over the old surface. In such cases, the typical thickness of the overlay is 30mm. While thinner than the layer used for new constructions, this thickness is sufficient to refresh the surface and extend the car park’s lifespan.

Why Thickness Matters for Car Park Surfacing

The thickness of tarmac not only affects the durability of the surface but also influences drainage and the overall performance of the car park. Thicker surfaces can better withstand wear and tear, reducing the need for frequent repairs and maintenance.

Choosing the Right Tarmac Thickness for Car Parks

Choosing the right thickness for tarmac surfacing depends on whether you’re starting from scratch or overlaying an existing surface. A 100mm layer is recommended for new car parks, while a 30mm overlay is sufficient for resurfacing. For more information on car park surfacing, including tarmac options and line marking services, visit Car Park Surfacing and Car Park Line & Bay Marking pages.