Concrete repair spurs offer a sturdy, long-lasting solution to reinforcing weakened wooden fence posts and other supportive structures. Given the changeable British weather which can range from sun-blessed summers to wet, windy winters, ensuring the integrity of your fencing is crucial for both security and aesthetics. This blog post explores the what, why, and how of using concrete repair spurs, ensuring your fencing can stand the test of time and the elements.

What Are Concrete Repair Spurs?

Concrete repair spurs are pre-cast, solid concrete blocks that provide additional support to existing structures. Typically shaped in a 'Y' or 'L' configuration, they are designed to be partially buried in the ground alongside an existing post and then bolted or screwed together. The spur acts as a brace, transferring some of the structural load from the weakened post into the more durable concrete spur, thereby extending the life of the original post and maintaining the stability of the fence or structure.

Why Use Concrete Repair Spurs?

The primary goal of a concrete repair spur is to fortify structures that have become unstable or are in a state of disrepair, usually due to rot, wind damage, or shifting soils. Here are several key benefits:

  • Longevity: Concrete is known for its durability and longevity. It can withstand extreme weather conditions, from torrential rains to scorching heat, without succumbing to rot or corrosion.
  • Cost-Effective: Instead of replacing an entire wooden post or fencing section, a concrete repair spur can provide a more economically viable way to extend the life of the existing structure.
  • Ease of Installation: Installing a concrete repair spur is a relatively straightforward DIY project that can save on labour costs and time.
  • Environmentally Friendly: By prolonging the life of wooden posts and reducing the need for replacement, repair spurs can contribute to less waste and the conservation of resources.

How to Use Concrete Repair Spurs

1. Assessing the Damage: Before beginning, it's crucial to assess the extent of the damage to the wooden post or structure to ensure that a repair spur is a suitable solution.

2. Preparation: Dig a trench next to the weakened post deep and wide enough to accommodate the concrete spur. The bottom should allow for the spur to be positioned at least 600mm (about 2 feet) into the ground for stability.

3. Positioning: Place the repair spur into the trench against the side of the existing post that requires support. Ensure it is upright using a spirit level.

4. Securing: Once in position, bolt or screw the spur to the existing post. Depending on the spur and post, you might need to drill holes to align with the fixing holes on the spur.

5. Backfilling: Mix concrete according to the manufacturer's instructions and pour it into the trench around the base of the repair spur. Tamper the concrete down to remove air pockets and then level it off just above ground level. Allow the concrete to set as per the given curing time before fully loading the structure.

6. Considerations for Future Maintenance: Although concrete repair spurs are low maintenance, periodic checks are wise to ensure the integrity of both the repair spur and the wooden post it supports.


Concrete repair spurs are an invaluable addition to any gardener or property owner's toolkit, providing a straightforward and effective solution to common problems faced by wooden structures exposed to the elements. By understanding how to properly select, prepare, and install these spurs, you can ensure that your fences, posts, and other structures remain safe and sound for years to come, without the need for costly and time-consuming replacements.

Remember, while installing a concrete repair spur can be a DIY job, always consider consulting with a professional if the damage is extensive or if the structure plays a critical role in the safety and security of your property.