Festoon lights are one of the most versatile and visually striking ways to add character and ambience to your outdoor space. Whether you're lighting up a garden party, decorating your patio, or giving your commercial venue that Instagrammable edge, the right installation makes all the difference.

While they may look simple, hanging festoon lights correctly requires a bit of planning, the right equipment, and a safe installation approach. In this comprehensive step-by-step guide, we’ll walk you through everything you need to know to hang festoon lights outdoors — whether in your back garden, along a fence, or across a courtyard.

Why Festoon Lights?

Before diving into the how-to, it’s worth understanding why festoon lights are such a popular lighting choice across the UK.

• Atmosphere: Warm white or coloured bulbs create a cosy and celebratory vibe.

• Versatility: Perfect for patios, pergolas, balconies, fences, events, pubs, and restaurants.

• All-season Use: Weather-resistant designs make them suitable year-round.

• Simple Elegance: Stylish, clean lines suit both rustic and modern outdoor spaces.

Now, let’s move on to how you can set them up properly for lasting effect and safety.

Step 1: Plan Your Layout

A. Measure Your Space

Use a measuring tape to determine the length of the area you want to cover. If you're planning a zigzag or drape pattern, don’t forget to add extra length for slack and curves.

B. Sketch It Out

Draw a rough plan of the area, including anchor points like trees, fences, walls, pergola posts, or poles. Mark where the power source is located, as this will influence how far you can go unless you’re using connectable sets or extension leads.

C. Decide on the Pattern

Common patterns include:

• Straight lines: Clean and modern.

• Zigzag: Dynamic and perfect for wide spaces.

• V-shape or fan: Focuses light on a central area like a dining table.

• Draped curves: Relaxed and romantic, ideal for events or weddings.

Step 2: Choose the Right Festoon Lights

Not all festival string lights are created equal. Here’s what to look for depending on your setting.

A. Bulb Type

• LED Bulbs: Energy-efficient, long-lasting, and safe.

• Filament-Style LEDs: Retro look with modern performance.

• Coloured Bulbs: Great for parties or playful spaces.

• Dimmable Options: Ideal for adjusting the atmosphere.

B. Cable Strength

• Light-duty PVC Cable: Suitable for temporary or short-term use.

• Heavy-duty Rubber Cable: Designed for permanent or long-term installation, especially in commercial settings.

C. Waterproof Rating (IP Rating)

For UK weather, look for:

• Minimum IP44: Splash-proof for general outdoor use.

• IP65 or IP67: For full weather protection in exposed environments.

D. Power Type

• Mains Powered: Consistent and reliable for large installations.

• Solar Powered: Eco-friendly and wire-free but dependent on sunlight.

• Plug & Play Connectable Sets: Easy to expand across larger spaces.

Step 3: Gather Tools and Materials

You may need the following:

• Ladder

• Measuring tape

• Pencil or chalk

• Outdoor extension lead (if required)

• Hooks, screw eyes, or cable ties

• Stainless steel wire (for support)

• Zip ties or carabiner clips

• Drill (for wall or fence anchors)

• Festoon pole(s) or posts (if no fixed anchor points)

Step 4: Install Support Wires (For Long Runs)

If you’re hanging festoon lights over a large span (more than 3-4 metres) or across open space, it’s best to install support wire to prevent sagging and reduce stress on the cable.

How to Install Support Wire:

1. Attach hooks or eye bolts to each fixed point (fence post, wall, tree, etc.).

2. Thread your steel wire through these anchor points.

3. Use turnbuckles or wire tensioners to tighten the line.

4. Once the wire is taut, your mains powered festoon lights can hang from it safely without stretching or straining.

This is especially useful for commercial installations in pub gardens or wedding venues where safety and durability are key.

Step 5: Mark Anchor Points

Use your plan and a measuring tape to lightly mark where each hook or anchor will go. Ideally, the lights should sit 2.2–2.5 metres off the ground at their lowest point.

Keep bulbs spaced evenly, and allow for gentle draping if desired. Leave a little slack in the cable to prevent tension on bulbs and fittings.

Step 6: Secure Your Festoon Lights

A. Using Hooks or Screws

• Screw-in cup hooks or eye bolts into walls, fences, or wooden structures.

• Clip or loop the light cable or supporting wire to these fixings.

• Use carabiners for quick-release hanging or permanent loops for fixed setups.

B. Using Poles or Stakes

No trees or walls? No problem. Use festoon poles or ground stakes designed for heavy duty festoon outdoor lighting.

• Hammer or screw the pole base into the ground or patio.

• Secure your lights to the top of the pole using a hook or bracket.

For windy UK weather, consider guy ropes or weighted bases to keep poles upright.

C. Using Zip Ties or Clips

For temporary setups like parties or weddings, zip ties or reusable outdoor clips can be used to fix festoon cables to fences, railings, or tent structures.

Step 7: Connect to Power Safely

Mains-Powered Lights

• Always use an IP-rated outdoor socket or weatherproof extension lead.

• Avoid trailing cables across paths—use cable covers or route along fences.

• Check bulbs are fully screwed in and sealed to prevent water ingress.

Solar-Powered Festoon Lights

• Install the solar panel lights in full sunlight.

• Ensure the panel faces south where possible.

• Avoid placing bulbs under trees or dense overhangs that may block light.

Step 8: Test and Adjust

Before finalising everything:

1. Plug in and switch on the lights (if mains powered).

2. Check each bulb is working and connections are tight.

3. Step back and view from all angles—adjust height or slack if needed.

Once happy with positioning, tighten any remaining hooks or ties and secure loose wires neatly out of sight.

Bonus Tips for a Professional Finish

1. Layer with Other Lighting

Pair festoon lights with:

• Fairy lights in trees or hedges

• Lanterns on tabletops

• Pathway lights or uplighters

This adds depth and a more dynamic atmosphere.

2. Use a Timer or Smart Plug

Add an outdoor-rated smart plug or timer to automate your lights. Set them to turn on at dusk and off before bed — saving energy and hassle.

3. Use Dimmers for Mood Control

Many LED festoon sets are compatible with plug-in dimmer switches, allowing you to fine-tune brightness for dinner parties, romantic evenings, or lively celebrations.

Common Mistakes to Avoid

• Skipping support wire: Causes sagging and strain on the cable.

• Using indoor-rated lights outdoors: Can result in damage or electrical hazards.

• Overloading a power socket: Always check the wattage capacity.

• Leaving cables loose: Trip hazards or stress on fittings can be dangerous.

Festoon lights are one of the easiest ways to transform your outdoor space into a glowing haven — perfect for garden entertaining, venue lighting, or year-round ambience.

By taking the time to plan your layout, choose the right products, and install them safely, you’ll enjoy years of reliable, stylish festoon lighting that enhances your space beautifully.

Whether you're a homeowner looking to host the perfect summer BBQ or a business creating a welcoming outdoor dining area, installing festoon lights is a DIY task that delivers instant impact — and a whole lot of charm.