Are Fence Panels a Standard Size?

 If you’re planning to install or replace a fence, you might be wondering whether fence panels come in a standard size. The simple answer is that while most fence panels follow common dimensions, there can be variations depending on the manufacturer and installer. Understanding the standard sizes, thickness options, and how panels can be adjusted will help you choose the right fit for your garden.

Standard Width of Fence Panels

In the UK, the most common width for fence panels is 6ft (1.83m). This size is widely used because it fits standard slotted concrete posts and most timber fence post configurations. However, while 6ft wide panels dominate the market, some installers use different widths, such as 5ft (1.52m) or 4ft (1.22m), which can be less common. If you’re replacing panels, it’s always a good idea to measure the existing ones to ensure a proper fit.

Fence Panel Heights

Fence panels come in a variety of heights to suit different needs, typically increasing in 1ft increments:

3ft (0.91m) - Ideal for front gardens or decorative boundaries

4ft (1.22m) - Offers more privacy while maintaining an open feel

5ft (1.52m) - A balance between security and aesthetics

5.5ft (1.65m) - This is a reasonably new but common size, designed to create a 6ft fence when used with a 150mm gravel boards

6ft (1.83m) - The most common height for privacy fencing

7ft (2.13m) and 8ft (2.44m) - Less common but used for steep sloping ground.  These panels are harder to find but some manufacturers manufacturer stacked fence panels. Jacksons have a range of stacked fence panels like their Venetian Hit and Miss and Shadowline panels explained on their guide of 7ft fence panels.

Do note that anything over 2m (around 6.5 feet) will need planning permission. We talk about it in our blog on 'Is there a way to install a fence over 2m without planning permission?'

Taller fences are often paired with gravel boards to raise their height slightly or protect the base from moisture damage.

Fence Panel Thickness

The thickness of a fence panel can vary significantly, with premium panels generally being thicker and more durable than budget options.

Budget panels - Typically 18-25mm thick, made with thinner slats and weaker framing.

Mid-range panels - Usually 25-40mm thick, offering better durability.

Premium panels - Can be 40mm or more, with thicker slats, stronger framing, and better resistance to warping or weather damage. 

Also, note that some manufactures note that panels can expand in size when they are first loaded with treatment.  So, annoyingly you may have to wait for panels to dry before they fit in existing slotted posts.  

If you’re replacing panels in existing slotted concrete posts, it’s crucial to measure the width of the slots and the thickness of your current panels. Concrete post slots typically accommodate panels up to 50mm thick, but some are narrower, and a thicker replacement panel might not fit.

Can Fence Panels Be Cut Down in Width?

Yes, fence panels can be cut to size if needed, though some are easier to modify than others. Traditional lap panels can be trimmed with a saw, but you’ll need to reinforce the cut edge with a new batten to maintain strength. Feather edge panels are nice and simple, as the rails can be cut with the excess boards removed and you have the new shorter panel. Framed or decorative panels can be more difficult to resize due to their construction, requiring more precise cutting and additional framing work. Manufacturers will give instructions on their website and also supply reduction kits for panels.

Some suppliers offer custom-made panels but these are often very expensive.

So, are Fence Panels a Standard Size?

While 6ft wide panels are the standard in the UK, variations exist, so it’s always best to measure existing posts before purchasing replacement panels. Heights typically range from 3ft to 6ft, with thickness varying depending on quality but do note that some manufacturers specify that gravel boards should be used with their fence panels to comply with their guarantee terms. If replacing panels in slotted concrete posts, check the slot width and panel thickness to ensure compatibility. And if your space requires non-standard sizes, fence panels can be cut down, though some are easier to modify than others.

By understanding these factors, you can ensure a smooth installation and a fence that fits perfectly within your garden.