Lightning & Electrical
DIY Guide: Installing Outdoor String Lights

Install Outdoor String Lights: A Step-by-Step Guide for a Brighter Backyard
Adding outdoor string lights can transform your backyard into a cozy, inviting space perfect for relaxing or entertaining guests. This simple DIY project can enhance your patio or deck’s ambiance while providing practical lighting for evening gatherings. In this guide, we’ll walk you through how to install outdoor string lights safely and effectively for a polished and professional look.
Why Install Outdoor String Lights?
When a homeowner asked Ask This Old House master electrician Heath Eastman for help brightening up her deck with string lights, he had the perfect solution. Installing outdoor string lights can instantly elevate your backyard’s aesthetic while creating a warm, welcoming atmosphere for any occasion. Even better, the project is easy enough for DIY enthusiasts.
Planning Your String Light Installation
Proper planning ensures your project runs smoothly and delivers the desired results. Before you begin, take some time to assess your outdoor space and gather essential materials.
Assessing Your Space
First, evaluate the area where you’ll install outdoor string lights by considering the following:
- Size and shape of your deck, patio, or yard
- Existing structures (like trees, fences, or posts) that could support lights
- Location of nearby outdoor electrical outlets
- Obstacles (such as branches or gutters) that could interfere with light placement
By planning carefully, you can avoid unnecessary complications during installation.
Choosing the Right Lights
Selecting the right lights will help achieve your desired look while ensuring durability:
- Bulb spacing: Affects brightness and overall style
- Bulb type: Energy-efficient LED bulbs last longer and use less power
- Outdoor rating: Ensure lights are designed to withstand outdoor elements
- String length: Measure your space to determine the proper length
- Style: Edison bulbs for a vintage look or globe bulbs for a modern vibe
Gathering Tools and Materials
Before you install outdoor string lights, gather the following materials and tools:
- Exterior-rated string lights
- Drill and drill bits
- Ladder
- Level
- Measuring tape
- Mounting hardware (hooks, brackets, fasteners)
- Steel support cable (for spans over 20 feet)
- Wire cutters
- Outdoor smart plug (optional)
- Wrench or socket set
Having everything ready will make the installation process more efficient.
Installing String Light Posts
If your space lacks existing structures to support the lights, you’ll need to install posts around your deck or patio.
Checking Existing Posts
If you have existing posts, use a level to check if they’re straight. This ensures any new posts will align properly with the existing ones. Adjust posts or shim as necessary for a consistent look.
Mounting Brackets
To secure new light posts:
- Position the post brackets on the outside of your deck’s corner posts and mark the screw holes.
- Place one bracket near the top and another at the midpoint of each corner post.
- Drill pilot holes at each marked spot to prevent splitting.
- Attach brackets using exterior decking screws, ensuring they are level.
This setup provides a sturdy foundation for hanging your lights.
Cutting and Installing Posts
Next, cut your posts to the desired height:
- Measure the height of nearby gutters for reference.
- Cut posts roughly 6 inches shorter than the gutter height to allow for water drainage.
- Insert posts into the mounted brackets and secure them using washers and fasteners.
This keeps the posts stable and prevents water damage.
Hanging the String Lights
Now that the posts are secure, you can install outdoor string lights to create your desired lighting design.
Installing Support Hooks
To anchor your lights properly:
- Mark where you’ll place hooks on the fascia beneath gutters or other structures.
- Drill small pilot holes at marked spots.
- Thread hooks into the holes, ensuring the open ends face upward.
These hooks will act as anchor points for your string lights.
Attaching the Lights
To hang your lights securely:
- Create a loop at the end of your support cable using the supplied hardware.
- Hook the loop over the first fascia hook and run the cable to the next hook.
- Adjust tension depending on whether you want a tight or slightly sagging light setup.
- Attach the lights to the cable using built-in loops, zip ties, or hardware provided with the kit.
- Once satisfied with the layout, trim excess cable with wire cutters.
Adding a Support Cable (Optional)
For spans longer than 20 feet or added stability:
- Use a coated stainless steel cable for durability.
- Attach the cable to hooks using carabiners or turnbuckles for easy adjustments.
- Secure the string lights to the cable using UV-rated zip ties or twist ties.
Powering and Controlling Your Lights
Once your lights are securely hung, you’re ready to power them up and enjoy your new outdoor ambiance.
Installing a Smart Plug
For convenient control:
- Plug a weather-resistant smart plug into your outdoor outlet.
- Connect your string lights to the smart plug.
- Set up the smart plug using the manufacturer’s instructions for remote or scheduled control.
Programming Light Controls
With a smart plug, you can:
- Schedule lights to turn on at dusk and off at dawn
- Control lighting from your phone or smart home system
- Adjust brightness for different occasions
This makes your outdoor lighting both functional and customizable.
Final Thoughts
Knowing how to install outdoor string lights can transform your backyard into the perfect space for relaxing, dining, or entertaining guests. With the right tools, careful planning, and creative design, you can achieve a polished look while enhancing your outdoor environment.
Ready to Brighten Up Your Space?
Now that you know how to install outdoor string lights, it’s time to bring your vision to life.
For more home improvement tips, lighting ideas, and DIY inspiration, explore more news on this website today!