Adding a trellis to the top of a garden fence is a popular way to enhance the privacy of your garden, support climbing plants, and improve the overall aesthetics of your outdoor space. However, when considering adding a trellis to a 2-metre fence, there are important considerations to keep in mind, including legal regulations, the structural integrity of the existing fence, and the choice of trellis. This comprehensive guide will help you navigate these considerations to determine the best course of action for adding a trellis to your garden fence.

Legal Considerations

In the UK, there are specific regulations that homeowners must adhere to when modifying or adding to garden boundaries. The most pertinent regulation concerning the addition of trellises to fences involves the overall height of the boundary. Planning permission is not typically required for fences up to 2 metres in height. However, adding a trellis to the top of a 2-metre fence could cause the total height to exceed this limit, potentially requiring planning permission. It is always advisable to consult your local council’s planning department before undertaking any adjustments to your garden fencing to ensure compliance with local regulations.

It's also good practice to have a conversation with your neighbours about your plans. Not only is it courteous, but it could prevent disputes later on.

Structural Considerations

Ensuring the existing fence can support the additional weight of a trellis is crucial. A 2-metre fence, depending on its construction and the materials used, may not have been designed to bear additional load. Prior to attaching a trellis, inspect your fence for signs of wear or weakness—especially fence posts and panels. If your fence is wooden, check for rot or insect damage that could compromise its strength. For fences made of other materials, such as vinyl or metal, look for signs of bending or rust, respectively.

If in doubt, it’s wise to seek advice from a fencing professional who can assess the integrity of your fence and recommend the best way to securely add a trellis.

Choosing the Right Trellis

The type of trellis you choose can have a significant impact on both the look and functionality of your fence extension. Lightweight, open trellises are ideal for supporting climbing plants and can add a decorative element to your garden without significantly increasing the weight on your fence. Be mindful of the material of the trellis; wooden trellises are popular for their natural appearance but require treatment to withstand weather conditions, whereas metal or plastic trellises offer durability with less maintenance.

When selecting a trellis, also consider the impact on your garden’s privacy and light. A denser trellis pattern can enhance privacy but may block sunlight to plants growing below.

Installation Tips

  • Check Stability: Before attaching a trellis, ensure the fence and particularly the fence posts are securely anchored and in good condition.
  • Use the Correct Fixings: Opt for weather-resistant screws or brackets and make sure they are suitable for the weight and material of the trellis.
  • Consider Access for Maintenance: Make sure you can easily access the back of the trellis for painting, repairs, and plant maintenance.


Adding a trellis to a 2-metre fence is a wonderful way to extend the height of your garden’s boundary thoughtfully and aesthetically. However, it’s paramount to consider the legal, structural, and practical aspects to ensure that your enhanced fence not only looks great but is also compliant with regulations and built to last. With the right preparation and materials, a trellis can beautifully transform your garden's privacy and style.