How deep should a telescopic bollard be installed?

A telescopic bollard is typically installed to a depth of 800mm to 1200mm (approx. 32–48 inches), depending on the model, height, and manufacturer’s specification. This depth ensures stability, smooth operation, and long-term durability.

What affects the installation depth:

1. Foundation depth

• Most standard installations require around 1 metre deep concrete foundation
• Typical footprint: 300mm x 300mm (or larger for heavy-duty models)

2. Ground conditions

• Soft or made-up ground may need deeper or reinforced foundations
• Heavy-traffic areas (e.g. vans/HGVs) may require additional support

3. Drainage (essential)

• A gravel soakaway base allows water to drain away
• Prevents water build-up, freezing, and internal damage

4. Alignment

• The sleeve must be installed perfectly vertical and level
• Poor alignment can cause:
  • Sticking or jamming
  • Locking issues
  • Premature wear

5. Surface finish

• The top of the bollard housing should sit flush with the ground level
• Ensures safe vehicle passage and a clean finish

Practical takeaway

The exact depth can vary, but cutting corners on depth or foundations will almost always lead to performance issues later. Proper groundwork is key.

At Aremco Barriers, our UK-manufactured telescopic bollards are supplied with full installation guidance, foundation sizes, and drainage recommendations, ensuring reliable, long-term performance across driveways, car parks, and commercial sites.