How Many Temporary Fence Panels Do I Need?

To calculate how many temporary fence panels you need, divide the length of each fence run by the width of one panel, then round the result up to the next whole panel.

Wade’s standard temporary fencing panels are 3.5m wide. When installed, a small gap is normally left between adjoining panel frames where they share a foot and are clamped together, so the actual run may be marginally longer than the combined panel widths. For reliable estimating, divide the required length by 3.5m and round up rather than relying on the gaps to reduce the panel quantity.

25m ÷ 3.5m = 7.14, rounded up to 8 panels.

That calculation provides a useful starting point, but a complete order must also account for separate runs, corners, pedestrian and vehicle gates, feet, clamps and any stability equipment required for the site.

How to calculate temporary fencing panels

The basic formula is:

Fence-line length ÷ 3.5m = number of temporary fencing panels

Always round the result up. Temporary fencing panels are supplied as complete units, so a calculation of 7.14 panels requires eight panels rather than seven.

The resulting fence line may be slightly longer than the measured distance. For example, three standard panels provide a nominal panel width of 10.5m. On site, the run may need to be repositioned, angled or overlapped to fit the available boundary.

For an overview of panel types, gates, stability and installation considerations, see Wade’s temporary fencing guide.

Worked temporary fencing calculations

Example 1: a 10m straight fence line

Divide 10m by the 3.5m panel width:

10 ÷ 3.5 = 2.86

Round this up to three panels. These provide a nominal combined panel width of 10.5m.

For a conventional freestanding straight run, the initial quantity estimate would be:

• 3 temporary fencing panels
• 4 fence feet
• 4 clamps for the two internal panel connections

For straightforward purchasing, allowing two clamps per panel would increase the clamp order to six. This provides a simpler allowance and leaves a small margin for the end arrangement or a replacement clamp.

Example 2: a 25m straight fence line

25 ÷ 3.5 = 7.14

Round this up to eight panels.

A conventional initial estimate would be:

• 8 temporary fencing panels
• 9 fence feet
• 14 clamps for seven panel-to-panel connections

Using the simpler two-clamps-per-panel ordering allowance would give 16 clamps.

Example 3: a 12m by 8m rectangular perimeter

A 12m by 8m rectangular site has a total perimeter of 40m. Dividing the complete perimeter by 3.5m gives:

40 ÷ 3.5 = 11.43, suggesting 12 panels.

However, that calculation does not properly account for the four sides and corners. Each side should instead be calculated separately:

• First 12m side: 12 ÷ 3.5 = 3.43, rounded up to 4 panels
• Second 12m side: 4 panels
• First 8m side: 8 ÷ 3.5 = 2.29, rounded up to 3 panels
• Second 8m side: 3 panels

The more realistic starting quantity is therefore 14 panels, subject to the intended corner arrangement and whether the enclosure includes a gate.

Example 4: two separate fence runs

Suppose a site needs one 12m run and a separate 8m run:

• 12m run: 4 panels
• 8m run: 3 panels
• Total: 7 panels

Because the runs are separate, each has two free ends. Using the conventional feet calculation:

• 4-panel run: 5 feet
• 3-panel run: 4 feet
• Total: 9 feet

This is why separate runs should not be combined into one total length before calculating all the components.

How corners and separate runs affect quantities

For a simple straight run, dividing the length by 3.5m is normally sufficient for the initial panel quantity. Enclosures, corners and irregular boundaries need more careful planning.

Calculate each side separately

Measure every straight section between corners, gates and changes in direction. Divide each section by 3.5m and round each result up before adding the quantities together.

This avoids underestimating the number of panels where the unused width from one side cannot practically be transferred to another side.

Allow for the corner arrangement

Temporary fencing panels are not normally cut to make a perimeter fit. At corners, the panels may need to be angled, overlapped or positioned so that the feet and clamps can be installed without leaving an avoidable opening.

The appropriate arrangement depends on the available space, ground conditions, public access, required security and the stability of the complete fence line.

Treat every separate run independently

A separate run normally requires its own start and end feet. It may also require additional support at each free end, particularly where the run is exposed or not returned into another fence line.

The panel calculation tells you the required length. It does not determine the site-specific stabilisation system. Wade’s temporary fencing installation guide explains the wider installation process.

How temporary fencing gates affect the calculation

Before calculating panels, decide where people, vehicles and deliveries need to pass through the perimeter. Gate type and width can materially change the number of standard panels required.

Wade’s range includes separate pedestrian gates, pedestrian gates built into full-size fencing panels, and temporary vehicle gates in different widths.

Gate built into a fencing panel

An anti-climb panel with a built-in pedestrian gate occupies the same nominal 3.5m-wide position as a standard panel. For the initial layout, count it as one panel bay rather than deducting a separate pedestrian opening and adding a normal panel.

Separate pedestrian gate

A separate pedestrian gate occupies its own opening in the run. Subtract the planned gate opening from the fence-line length before calculating the adjacent standard panels.

However, calculate the panel sections on either side independently. For example, a gate positioned away from the centre may leave two different run lengths, each of which must be divided by 3.5m and rounded up.

Vehicle gate

A vehicle gate replaces a wider section of the perimeter. If a 30m boundary includes a 4m vehicle gate, the remaining nominal fencing length is 26m:

26 ÷ 3.5 = 7.43, rounded up to 8 panels.

This assumes that the eight panels can be divided appropriately between the two sides of the gate. The actual layout should be checked using the measured distance from each gate post or gate position to the end or corner of the run.

Gate support, hinges, castors, latches and adjoining-panel stability also need to be considered. See the guide to temporary fencing gates and site access before finalising a gated layout.

How many temporary fence feet and clamps do you need?

Panels are only one part of the quantity calculation. A typical freestanding temporary fencing run also needs feet and clamps, plus any stabilising or security components required by the site.

Fence feet

For a conventional freestanding straight run, use the following estimating method:

Number of feet = number of panels + 1

This allows one foot at every junction and one at each free end.

A closed perimeter does not have the same two free ends as a straight run, but corners, gates and changes in layout can alter the number and positioning of feet. Calculate the physical junctions rather than automatically applying the straight-run formula to every enclosure.

Panel clamps

Two clamps are normally used at each panel-to-panel connection.

For the exact number of internal connections in one uninterrupted straight run:

Exact clamps = (number of panels − 1) × 2

Examples:

• 3 panels create 2 internal connections: 4 clamps
• 8 panels create 7 internal connections: 14 clamps
• 15 panels create 14 internal connections: 28 clamps

For simpler ordering, allowing two clamps per panel is a practical convention. It avoids relying on a calculation that covers only internal panel-to-panel connections and provides a small allowance for end details, gates, replacements or layout changes.

Separate runs should be calculated separately because each run has fewer internal connections than the same number of panels arranged as one continuous line.

Should you order spare temporary fencing panels?

A spare allowance can prevent delays where measurements change, a panel is damaged or the fence line needs to be adjusted during the project.

For a small installation, allowing at least one spare panel is often more useful than applying a small percentage that rounds down to nothing.

For a larger project, a percentage-based contingency may be more practical. The appropriate percentage depends on factors such as:

• the accuracy of the site measurements
• the number of corners and separate runs
• whether access points may move
• the expected duration of the project
• the likelihood of changes to the working area
• the risk of panels being damaged or taken out of service
• available storage space and delivery arrangements

There is no single contingency percentage that suits every site. On a fixed, accurately measured run, only a small allowance may be needed. A changing construction site with several phases or perimeter alterations may justify a larger operational reserve.

What else do you need with temporary fencing?

A panel count should not be treated as a complete material list. Depending on the layout and site conditions, the fencing system may also include:

• standard or anti-tamper clamps
• rubber or high-visibility fence feet
• pedestrian or vehicle gates
• anti-lift devices
• small or long braces
• ground pins for suitable soft ground
• ballast trays or ballast blocks for suitable hard-ground arrangements
• windbreaker or zero-trip stabilising systems
• fence covers or acoustic products
• stillages for handling and storage

Not every accessory is required on every project. Selection depends on the panel type, perimeter layout, ground conditions, exposure, access arrangements and whether covers or other materials will increase the wind loading.

For a component-by-component explanation, see what you need for temporary fencing. Wade’s temporary fencing accessories collection also brings together feet, clamps and related fencing equipment.

Should you buy or hire the panels?

Once the required quantity is known, the next decision is whether to purchase the equipment or enquire about hire.

Purchasing is generally the more appropriate route for smaller quantities, straightforward requirements, repeat use or projects where the customer wants to retain control of the fencing after the initial work is complete.

Temporary fencing hire is primarily relevant to substantial construction sites and larger project-based packages. Suitability will depend on the quantity, location, project duration, transport requirements and the wider commercial arrangement.

The guide to buying or hiring temporary fencing covers the main considerations in more detail.

Getting help with temporary fencing quantities

For a simple measured run, the calculations in this guide provide a practical starting point. Medium and large sites may require a more detailed review of the perimeter, corners, access points, delivery requirements and installation arrangement.

Wade can provide product quantity guidance and can assist with site layouts for suitable medium and large-scale projects. The level of support available will depend on the project, customer requirements, location, distance and overall supply arrangement.

Plan your fencing order

Measure each run before selecting panels and components

Start with the 3.5m panel calculation, then account for corners, gates, separate runs, feet, clamps and site-specific stability requirements.

View temporary fencing panels

For help with a larger or more complex fencing requirement, contact Wade Building Supplies with the site dimensions, location, required access points and expected project duration.

Frequently asked questions

How many temporary fence panels cover 10 metres?

Three standard 3.5m temporary fence panels provide a nominal combined width of 10.5m. The final position may need to be adjusted or overlapped slightly to fit the available 10m run.

How many temporary fence panels cover 100 metres?

Divide 100m by 3.5m:

100 ÷ 3.5 = 28.57

You therefore need at least 29 panels for a straight 100m run, before adding any spare allowance.

How wide is a temporary fencing panel?

Wade’s standard anti-climb and economy temporary fencing panels are 3.5m wide and 2m high.

How many feet do I need for temporary fencing?

For a conventional freestanding straight run, allow one foot at every panel junction and one at each free end. This normally means one more foot than the number of panels. Gates, corners, separate runs and alternative support arrangements can change the quantity.

How many clamps do I need per temporary fencing panel?

Use two clamps at each panel-to-panel connection. For straightforward ordering, two clamps per panel is a practical allowance and provides a small margin beyond the exact number of internal connections.

Does a temporary gate replace a fencing panel?

It depends on the gate type. A pedestrian gate built into a full-size panel occupies one standard panel bay. A separate pedestrian or vehicle gate creates its own opening, so calculate the remaining fence sections on either side separately.

Should I order spare fence panels?

For a small site, consider at least one spare panel. On larger or changing sites, use a percentage-based contingency appropriate to the layout, project duration and likelihood of alterations or damage.

Can Wade calculate the temporary fencing for my site?

Wade can provide quantity guidance and may assist with site layouts for suitable medium and large-scale projects. Support will depend on the size, location, distance, customer and wider project requirements.