0.9m High Birdsmouth Post for Knee Rail Fencing

0.9m High Birdsmouth Post for Knee Rail Fencing

Timber knee rail fencing refers to a type of structure constructed using timber and employing a particular jointing technique called the 'birdsmouth' joint. This style of fencing typically consists of horizontal rails supported by vertical posts. It is also known as birdsmouth, ascot and diamond fencing.

The term 'Knee Rail' refers to the fact that it is a low-level (knee height) structure that offers a boundary without obstructing views. The birdsmouth joint is a type of notch or cut at the end of a piece of timber to fit securely onto another piece of wood, in this case the post. This joint is designed to ensure a strong and secure connection between the horizontal rails and the vertical posts by maximising the surface area contact between rail and post.

The primary material used in this fencing style is timber, usually wood selected for its durability and resistance to decay as this type of fencing is installed outdoors. The timber posts and rails are fixed together using galvanised straps and galvanised nails, and the posts are cemented into the ground.

Typically used around car parks, along paths and walkways etc, it is low and can be stepped over, so does not give any boundary protection, however it is good for boundary demarcation, discouraging people from walking on grass or flower beds, or to keep cars parking in a designated area only. It is a low-cost way of defining a boundary when security is not needed and is often used in carparks, along walkways and paths and in many other public settings.

Please note: Timber knee rails do not meet the specifications for highway use

Available from First Fence

The 0.9m high Birdsmouth post from First Fence is made from green treated timber and measures 900mm in height with a section of 100 x 100mm. This timber knee rail fencing is supplied to First Fence by a reputable UK timber saw mill, produced from Norway Spruce and felled predominantly from North Wales (FSC certification is available upon request).

These posts are designed for an in-ground installation and will require a minimum of 2 bags of post mix per post. It is recommended to site the posts at 1.8m centres and a depth of half the post height - 450mm.

To complete your new Knee Rail fencing run, First Fence also stocks horizontal timber rails in both 75 x 75mm and 100 x 100mm formats and 1.8m and 3.6m lengths, additionally galvanised fixing straps and nails. Both of the top rails will work with the Birdsmouth post, the 75mm rail will need the V style or Shoe style fixing strap, the 100mm rail will have an overhang and so will need the Bishop's Hat style strap which allows for this.

This timber knee rail fencing is supplied to First Fence by a reputable UK timber saw mill, produced from Norway Spruce and felled predominantly from North Wales (FSC certification is available upon request).

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