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8 Key Points For Waterproof On LED Outdoor Lights

When we talk about the waterproofing of outdoor lighting, you must have to clear what is IP rate for them.

IP44: Suitable for outdoor use and resistant to rain, large dirt and small insects. These fixtures are commonly used for tree lights, garden lights, pole (path) lights, and outdoor lights.
IP66 or higher: These rated fixtures can withstand heavy rain and even being submerged in water. They are ideal for use in harsh weather conditions, such as seaside areas or rainy areas.

IP44: Suitable for outdoor use and resistant to rain, large dirt and small insects. These fixtures are commonly used for tree lights, garden lights, pole (path) lights, and outdoor lights.
IP66 or higher: These rated fixtures can withstand heavy rain and even being submerged in water. They are ideal for use in harsh weather conditions, such as seaside areas or rainy areas.

Waterproof IP Rate

There is an original article on how to waterproof outdoor lighting, Including 8 key points:

1. Material selection:

It is crucial to choose materials suitable for outdoor use. The material should have good waterproof properties and weather resistance, and be able to resist the damage of ultraviolet rays and the effects of temperature changes.

When choosing outdoor lighting materials, there are several commonly used materials that are very suitable for outdoor environments:

1.1. Aluminum or aluminum alloy: These materials have good thermal conductivity and are often used to make lamp bodies because they are durable and waterproof.

1.2. Stainless steel: especially 304# precision cast stainless steel, which has excellent anti-corrosion and anti-aging properties and is often used as cover material.

1.3. Silicone sealing ring: Because of its excellent waterproof performance, high temperature resistance and anti-aging properties, it is often used to improve the sealing of lamps.

1.4. High-strength tempered glass: It has strong light transmittance and load-bearing capacity, and is often used in the light-transmitting part of lamps.

1.5. Plastic materials: such as PC and ABS. Their toughness and anti-fall properties can protect the internal parts of the lamp and are suitable for occasions where metal weight is not required.

The choice of these materials ensures that the outdoor light fixtures will operate reliably in a variety of weather conditions while also maintaining their beauty and functionality.

waterproof on outdoor lighting


2. Structural design:

The structural design of the lamp should ensure that there is no possibility of moisture penetration. This includes the use of tight-fitting seams, waterproof seals and proper drainage.

The structural design of outdoor lighting fixtures needs to consider many aspects, including functionality, technical principles, energy-saving effects, and coordination with the surrounding environment.

When designing outdoor lighting, Usually consider on lighting needs, And then consider the lifespan and maintenance costs of the fixtures.

Materials and processes are also very important. Modern outdoor lighting fixtures usually use aluminum alloy die-casting and surface electrostatic spraying to ensure the lightweight and corrosion resistance of the structure.


3. Sealing technology:

The sealing technology of outdoor lighting fixtures is the key to ensuring their waterproof performance. High-quality sealants and sealing strips can effectively prevent moisture penetration and protect the electronic components inside the lamp. These materials generally have good adhesion and elasticity and can adapt to temperature changes and physical shock to maintain the sealing effect. When designing, the thermal expansion and contraction of the lamp will also be taken into consideration to ensure that the sealing material can maintain performance at different temperatures.

The sealing technology of lamps not only includes physical sealing, but also involves chemical protection. For example, some sealants form a waterproof layer during the curing process while also providing electrical insulation. The application of these technologies has greatly improved the reliability and durability of outdoor lighting fixtures under various environmental conditions.

If you need to review specific outdoor lighting sealing technologies, we can provide some relevant sources of information, details and our project cases.

Sealing technology and testing


4. Wires and connectors:

In outdoor lighting fixtures, wire and connector selection is critical to ensuring good waterproofing. Here are some key points:

  • Wire selection: You should choose wires designed for outdoor use, such as YJV or YJV22 models, which have better waterproof and weather resistance.
  • Joint treatment: The joints should be wrapped in multiple layers with waterproof tape and insulating tape to prevent moisture penetration.
  • Connector direction: When wiring, the connector should face upward and should not be placed on the ground or underground to avoid moisture accumulation.
  • Protective pipe: Outdoor cable protection pipe should be steel pipe, PE pipe or PVC pipe (heavy duty) to provide additional physical protection.
  • Connector location: The connector should be hidden in the shrub area or inside the lamp to avoid direct exposure to the external environment.

Through these measures, the waterproof performance of outdoor lamps can be significantly improved to ensure their stable operation under various weather conditions.

Wires and connectors for outdoor lighting


5. Waterproof coating:

The waterproof coating of the outer casing of outdoor lamps is indeed an important protective measure, which can effectively protect the lamps from moisture erosion.

In addition to polyurethane, there are several other commonly used coating types, including:

  • Modified epoxy: This material has strong adhesion and can form a hard protective layer, but may age under UV exposure.
  • Modified polyurethane resin: Provides good elasticity and weather resistance, adapting to temperature changes and physical impact.
  • Modified organic silica gel: It has excellent molecular structure stability and hydrophobicity, and can resist the effects of ultraviolet rays and temperature changes for a long time.

Each of these coating materials has different physical and chemical properties, and the most appropriate type can be selected based on the use environment and performance requirements of outdoor lighting fixtures.

Waterproof coating


6. Temperature control:

Considering the influence of thermal expansion and contraction, a certain amount of material expansion space should be allowed during design to avoid sealing failure caused by temperature changes.

Choose lamps with good heat dissipation design to ensure normal operation in high temperature environments. Avoid exposing your lighting fixture to excessively high or low temperatures to extend its life.



7. Pressure balance:

Install a pressure balance valve to prevent internal pressure changes caused by temperature changes, which may cause seal failure.

Pressure balance on outdoor lights



8. Regular inspection and maintenance:

Even if it is properly designed and installed, regular inspection of the waterproof performance of the lamp is necessary to ensure long-term waterproofing.




Through the comprehensive consideration and implementation of the above eight points, the waterproof performance of outdoor lighting can be significantly improved to ensure its stable operation and long-term durability under various environmental conditions.

Beon is the most professional provider of outdoor lighting solutions.

We are specialized in producing all kinds of outdoor lamps, including LED street lights, floodlights, stadium lights, industrial lights, garden lights, and intelligent lighting systems.

Welcome to contact our professional business team.  Email: manager@beonled.com

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