How to choose between IP65 and IP67 LED strips for outdoor linear lighting projects?

Lighting Product Requests & Customization
1

I’m planning a semi-outdoor linear lighting project, with LED strips installed under building eaves and recessed grooves. I’m currently deciding between IP65 and IP67 LED strips and would appreciate real-world insights.

Project background:

Environment: Outdoor but under eaves, not directly exposed to heavy rain

Installation: Recessed aluminum profiles

Long strip runs with segmented power supply

Preference for easier long-term maintenance

Key questions:

  1. Is IP65 sufficient for this type of semi-outdoor environment?

  2. Does IP67 significantly increase heat dissipation or maintenance difficulty?

  3. From a long-term reliability perspective, which option performs better?

  4. Are there any balanced recommendations or critical details to watch out for?

Looking forward to practical project experience rather than datasheet explanations. Thanks!

2

This IP rating decision is very common in architectural linear lighting projects. It’s best evaluated from an environment and maintenance perspective.

When IP65 is sufficient

For installations under eaves or recessed grooves:

  • No constant direct rain exposure

  • No standing water

IP65 is usually sufficient and offers better heat dissipation and easier maintenance.

Pros & cons of IP67

IP67 is suitable when:

  • Direct rain exposure is expected

  • Temporary water immersion is possible

However, in practice:

  • Fully encapsulated strips have reduced heat dissipation

  • Maintenance and replacement can be more difficult

Long-term reliability

Based on project experience:

  • Lifespan differences between IP65 and IP67 are minimal when used correctly

  • Power supply quality, waterproof connectors, and installation details have a greater impact on reliability

Practical advice

  • Under eaves / recessed → IP65 first

  • Exposed or low-positioned installations → IP67

  • Pay close attention to end-cap sealing and drainage design

Summary

Higher IP doesn’t always mean better.
The best choice is the one that matches the actual environment.