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Knee Rail Fencing

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Timber Knee Rail Fencing

Timber Knee Rail Fencing is a robust timber-based structure crafted using the 'birdsmouth' jointing technique. This fencing style typically features securely positioned horizontal rails supported by vertical posts, also recognised within the industry as birdsmouth, ascot or diamond fencing.

The term 'Knee Rail' finds its origin in its design, strategically placed at a low height around knee level, serving to demarcate an area without impeding sightlines. The birdsmouth joint is a notch or cut at the end of the timber that fits tightly onto the post. It strengthens the structure by increasing the contact area between the rails and posts.

We have the perfect Knee Rail components for your fencing project! Choose from 1.8m or 3.6m rails in both 75mm x 75mm and 100mm x 100mm widths. Our 100mm x 100mm posts come in 0.9m or 1.2m heights to match your rail selection.

Plus, we offer three post strap styles: Bishop's Hat for 100mm top rails, V-style or Shoe-style for 75mm top rails. With this variety, you can easily build a knee rail fence that's perfectly customised to your needs.

Its versatility allows for application across diverse settings such as car parks, pathways, and walkways. Due to its heights this is not a security product however, it efficiently defines boundaries, discourages trespassing on grass or flower beds, and manages designated parking spaces. Its cost-effectiveness makes it ideal in public settings where stringent security measures aren't paramount.

Durable, decay-resistant timber predominantly shapes this fencing style, rendering it particularly suitable for outdoor installations. To assemble, use top rails, birdsmouth posts, and galvanised straps. Galvanised straps come in straight or 'Bishop's Hat' style. Use nails to make a strong and long-lasting connection between the timber posts and rails. All these products are available from First Fence.

A major upside of timber knee rail is its minimal upkeep. With just periodic inspections and occasional stain touch-ups, it boasts a long lifespan, saving you time and effort in the long run.

Check out our other timber fencing ranges

Beyond knee rail, we offer a diverse range of timber fencing solutions to meet your specific needs. Whether you're seeking practicality or traditional charm, we have something for you:

Post and rail systems are versatile and useful for keeping animals, marking boundaries, and improving gardens. Their ease of installation makes them a popular choice for DIY enthusiasts.

Traditional Timber Panels: Add a touch of timeless elegance with our collection of pre-made panels. Choose from various styles and sizes and find the perfect match for your project. We also provide all the necessary accessories, like concrete or timber posts and gravel boards, for a seamless installation.

Explore our full range of timber fencing and discover the perfect solution for your space!

Contact us

For more info on our timber knee rail fencing, contact our sales team at 01283 512111 or We are available on our live chat.

Frequently Asked Questions
What is Timber Knee Rail Fencing?
What are the benefits of Knee Rails?
Where can Timber Knee Railing fencing be used?
What are Knee Rails made of?
How do I maintain Timber Knee Rails?
What size Knee Rail posts and rails do you have available?
What is the difference between the Birdsmouth Post Straps?
How to Install Timber Knee Rail Fencing?
Help Centre
To ensure you have all the relevant information about the products you’re purchasing, we’ve published a series of how-to guides:
Knee Rail
A Comprehensive Guide to Maintaining your Timber Knee Rail
Timber Knee Rail is a fantastic addition to outdoor spaces, offering both functionality and aesthetic appeal. To ensure that your Timber Knee Rail stands the test of time and continues to enhance your surroundings, proper maintenance is key.
Timber Knee Rail
The Features and Benefits of Knee Rail
Have you heard about Timber Knee Rail? You might have heard it be called diamond fencing, rail fence or even birdsmouth fencing. Knee rail can help add a stylish border to a range of applications, and with many features and benefits it might just be what you’ve been looking for…
Timber Knee Rails
How to Install Timber Knee Rail Fencing
Timber Knee Rail fencing is relatively easy to install, once you have worked out the meterage and components that you require, along with any additional items such as post mix and wood treatment.