How to Waterproof Outdoor Lights?

May 13, 2025

Outdoor lights can significantly enhance the beauty and safety of your property. However, they can also face the brunt of nature—rain, snow, humidity, and fluctuating temperatures can damage unprotected lights. Waterproofing your outdoor lights ensures they last longer, perform better, and save money on repairs or replacements. This guide will show you how to protect your outdoor lighting system from the elements, so you can enjoy your illuminated landscape year-round.



Why Waterproofing Outdoor Lights is Essential?

Waterproofing your outdoor lights isn’t just a good idea—it’s essential for the longevity and safety of your lights. Here’s why:

  • Weather Protection: Outdoor lights are exposed to rain, snow, and humidity. Electrical components can fail without proper waterproofing, and the lights can deteriorate quickly.

  • Safety Concerns: Exposed lights are prone to electrical hazards. Water can get into electrical components, creating the risk of short circuits, electric shocks, or even fires.

Cost Savings: Waterproofing your lights reduces the likelihood of damage, saving you money on frequent repairs or replacements.

Different Types of Waterproof Outdoor Lights

Different types of lights require different waterproofing approaches. Here's a breakdown of various outdoor lights and how to protect them:

  • String Lights: Often used for decoration, these are vulnerable to rain. Waterproofing them with a waterproofing spray is key.

  • LED Landscape Lights: LED lights are energy-efficient, but still need protection. Choosing IP-rated LED lights ensures they’re waterproof from the start.

  • Spotlights & Floodlights: These are used for accent lighting and can be tricky to waterproof. Ensure they are correctly sealed at their base and wiring.

  • Solar-Powered Lights: While many solar lights come with some waterproofing, extra sealant around the wiring and switch can extend their life.

How to Waterproof Outdoor Lights: A Step-by-Step Guide

Waterproofing outdoor lights is a straightforward process when done right. Here’s how to do it:

Step 1: Choose the Right Waterproof Lights

  • Always select outdoor lights with a high IP (Ingress Protection) rating, especially IP65 or higher, which is perfect for outdoor use.

  • Ensure your lights are designed for the weather conditions in your region, such as waterproof and corrosion-resistant.

Step 2: Applying Waterproof Coating or Spray

If your outdoor lights are not waterproofed, applying a waterproofing spray is an effective solution:

  • Spray the Lights: Coat the bulbs and the exterior with a weatherproof spray designed for electrical use.

  • Apply in Thin Layers: Be careful not to overload the lights with too much coating, which could affect their performance.

Step 3: Seal the Wiring and Electrical Components

  • Use Waterproof Electrical Tape: Seal the wiring with waterproof electrical tape to protect the exposed wiring and prevent water from entering the electrical components.

  • Silicone Sealants: Use silicone-based sealant to seal gaps and connectors. This helps keep moisture out of any cracks and crevices.

Step 4: Install Lights in Safe, Protected Locations

  • Install your lights in protected areas, such as under eaves, on porches, or in waterproof enclosures that shield them from direct exposure to rain or snow.

Step 5: Routine Maintenance

  • Regularly check your lights to ensure they’re still waterproofed, and reapply waterproofing spray if necessary.


Waterproofing Outdoor Lights: Common Mistakes to Avoid

While waterproofing is crucial, there are a few common mistakes to avoid:


Mistake How to Avoid It
Using non-weatherproof tape Always use waterproof electrical tape for sealing.
Skipping the sealing of electrical components Seal all wiring connections with silicone sealant or tape.
Installing lights in wet areas Ensure lights are installed in areas protected from water pooling.
Forgetting to clean before waterproofing Clean the lights and components thoroughly before applying sprays.

Best Waterproofing Products for Outdoor Lights

To get the best results, you’ll need the right waterproofing products. Here are some top choices:

  • Waterproofing Spray for Lights: A reliable weatherproofing spray (choose one rated for electronics) is essential for outdoor light protection.

  • Waterproof Electrical Tape: Wrap exposed wiring with 3M Scotch Super 33+ or similar high-quality waterproof electrical tape.

  • Silicone Sealants: GE Silicone II is perfect for sealing joints and preventing water leaks.

  • Waterproof Covers & Enclosures: If you're worried about heavy rain or snow, consider covering or enclosing your lights.


How Bernardy Lighting Can Help You with Waterproofing Outdoor Lights

While DIY waterproofing is excellent, sometimes it’s best to leave it to the professionals. Here’s how Bernardy Lighting LLC can help:

  • Expert Consultation & Advice: We provide expert recommendations to ensure your outdoor lighting is durable and safe in any weather.

  • Custom Outdoor Lighting Solutions: Bernardy Lighting offers custom design and installation for waterproof landscape lighting that fits your vision.

  • Full-Service Installation & Maintenance: From installation to ongoing maintenance, we ensure your outdoor lights stay safe and waterproof for years.


Conclusion 

Waterproofing your outdoor lights is crucial to ensure they last through various weather conditions and continue to illuminate your outdoor spaces beautifully. Whether you want to upgrade your lighting for the holiday season or need long-term waterproofing, Bernardy Lighting LLC is here to help.

Contact Bernardy Lighting LLC today to discuss how we can help waterproof your outdoor lighting system and keep your home bright and safe all year round.


FAQs: Waterproof Outdoor Lights

How can I waterproof string lights for outdoor use?

You can waterproof string lights using waterproofing spray and electrical tape to cover any exposed wires.


What is the best waterproofing spray for outdoor lights?

Look for sprays designed for outdoor use and electrical components, such as Rust-Oleum NeverWet or Scotchgard Outdoor Waterproofing Spray.


How do I seal the electrical components of outdoor lights?

Use silicone-based sealants to seal the joints and connections of your outdoor lights, or apply waterproof electrical tape.


Can outdoor lights be left in the rain?

Yes, but only if they are properly waterproofed. Always check your lights' IP rating to ensure they’re suitable for outdoor conditions.


Why do outdoor lights need waterproofing?

 Waterproofing protects your lights from electrical hazards, rusting, and damage from rain and snow, ensuring they last longer and perform better.

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