COB LED strip lights have become increasingly popular in residential, commercial, and outdoor lighting projects because of their smooth illumination, flexible installation, and modern appearance. They are commonly used for kitchen lighting, bathroom mirrors, outdoor decorations, architectural accents, and landscape lighting.

However, when installing LED strips in areas exposed to moisture, one important question always comes up:

Are COB LED strips waterproof?

The answer depends on the IP rating of the LED strip.

Not all COB LED strips are waterproof. Some models are designed only for dry indoor environments, while others are protected against water, humidity, and outdoor conditions.

Understanding IP ratings such as IP20, IP65, and IP67 will help you choose the right COB LED strip for your specific application.

What Does the IP Rating Mean?

IP stands for Ingress Protection, which is an international rating system used to describe how well an electrical product is protected against solid objects and liquids.

The IP rating usually consists of two numbers:

The first number indicates protection against solid particles such as dust.

The second number indicates protection against water.

For example:

· IP20 = Basic protection, suitable for dry indoor areas

· IP65 = Dust protected and resistant to water jets

· IP67 = Dust protected and can withstand temporary water immersion

Choosing the correct IP rating is essential for both safety and long-term LED performance.

IP20 COB LED Strips: Best for Dry Indoor Applications

IP20 is the most common rating for standard indoor COB LED strips.

These strips usually have exposed LED chips and a flexible PCB without additional waterproof coating.

They are designed for environments where there is no direct contact with water.

Recommended applications:

· Living rooms

· Bedrooms

· TV background lighting

· Ceiling cove lighting

· Wardrobes

· Bookshelves

· Office decoration

· Display cabinets

Advantages of IP20 COB LED strips:

· Better heat dissipation

· More flexible installation

· Smaller profile size

· Lower cost

· Easier cutting and customization

Because there is no silicone coating covering the LEDs, heat can escape more easily. This makes IP20 versions a good choice for indoor decorative lighting where moisture is not a concern.

However, they should not be installed in areas with water splashes or high humidity.

IP65 COB LED Strips: Water-Resistant for Moist Environments

IP65 COB LED strips are designed with a protective silicone coating or similar covering layer over the LED components.

This coating helps protect the strip from dust and low-pressure water spray.

They are commonly used in areas where occasional moisture exposure may occur.

Recommended applications:

· Kitchen countertops

· Bathroom mirrors

· Balconies

· Covered outdoor areas

· Restaurant decoration

· Shop displays

Advantages of IP65 COB LED strips:

· Better moisture protection

· Suitable for humid environments

· Easier maintenance

· Improved durability compared with IP20 versions

However, IP65 does not mean the LED strip can be submerged in water. It can handle splashes and light water exposure, but it is not designed for underwater use.

For example, installing an IP65 COB LED strip inside a bathroom mirror frame may be suitable, but placing it directly in a swimming pool environment would not be recommended.

IP67 COB LED Strips: Designed for More Demanding Conditions

IP67 COB LED strips provide stronger protection against water compared with IP65 models.

They are usually covered with thicker silicone protection or a waterproof sleeve, allowing them to withstand temporary immersion in water.

Recommended applications:

· Outdoor landscape lighting

· Garden decoration

· Pathway lighting

· Outdoor signs

· Areas exposed to heavy rain

Advantages of IP67 COB LED strips:

· Higher waterproof protection

· Better outdoor durability

· Suitable for challenging environments

· Improved resistance against dust and moisture

However, IP67 does not mean permanent underwater operation. Long-term exposure to water may still affect the product, especially at connection points, cut sections, and power supply connections.

IP20 vs IP65 vs IP67 COB LED Strips Comparison

The best choice depends on where the COB LED strip will be installed.

Does Waterproof Coating Affect COB LED Strip Performance?

Waterproof protection improves durability, but it can also influence heat management.

The silicone coating used on IP65 and IP67 LED strips creates an additional layer around the LEDs. While this protects against moisture, it may slightly reduce heat dissipation compared with an exposed IP20 strip.

For this reason, installation design becomes especially important for high-power COB LED strips.

Recommended practices include:

· Using aluminum profiles when possible

· Avoiding fully enclosed spaces

· Selecting the correct power level

· Ensuring proper ventilation

A well-designed waterproof COB LED strip balances protection, brightness, and thermal performance.

Can Waterproof COB LED Strips Be Used Outdoors?

Yes, but choosing the correct IP rating is important.

For outdoor applications, consider:

Covered Outdoor Areas

Examples:

· Covered patios

· Balconies

· Outdoor ceilings

IP65 is often sufficient if the strip is protected from direct rain.

Fully Exposed Outdoor Areas

Examples:

· Gardens

· Fences

· Outdoor signs

IP67 or higher protection is usually a better choice.

In addition to the LED strip itself, pay attention to:

· Waterproof connectors

· Power supply protection

· Cable connections

· Installation location

A waterproof LED strip will not be fully protected if the electrical connections are exposed to moisture.

Are IP67 COB LED Strips Better Than IP20 Models?

Not necessarily.

A higher IP rating does not always mean better performance. It simply means stronger protection against external conditions.

For example:

An IP20 COB LED strip may actually be the better choice for a bedroom ceiling because it offers:

· Better airflow

· Easier installation

· Lower cost

· Excellent lighting performance

An IP67 COB LED strip would be unnecessary for a dry indoor environment.

The right choice is based on the actual application, not simply choosing the highest protection level.

How to Choose the Right COB LED Strip IP Rating

Before purchasing, ask these questions:

Where Will the LED Strip Be Installed?

Dry indoor space:
→ IP20

Humid or splash-prone area:
→ IP65

Outdoor or rain-exposed area:
→ IP67

Will It Contact Water Directly?

If there is a possibility of direct water exposure, choose a higher IP rating.

Does the Installation Require Maximum Flexibility?

If the strip needs frequent bending, cutting, or hidden installation, IP20 may provide easier handling.

Is Heat Dissipation Important?

For high-brightness COB LED strips, thermal management should always be considered.

Professional LED manufacturers carefully balance waterproof design, brightness performance, and heat control. Companies such as LEDWAY provide COB LED strip solutions with different protection levels to meet various indoor, commercial, and outdoor lighting requirements.

Common Mistakes When Choosing Waterproof COB LED Strips

Choosing IP67 for Every Application

Higher protection is not always necessary. It may increase cost and reduce flexibility.

Ignoring Connection Points

The weakest part of a waterproof installation is often not the LED strip itself but the connectors and wiring.

Installing High-Power Strips Without Heat Management

Waterproof coating does not remove the need for proper thermal design.

Using Indoor Power Supplies Outdoors

The LED strip may be waterproof, but the power supply must also be suitable for the environment.

So, are COB LED strips waterproof? Some are, and some are not. The answer depends on the IP rating.

· IP20 COB LED strips are ideal for dry indoor decoration.

· IP65 COB LED strips are suitable for humid areas and light water exposure.

· IP67 COB LED strips are designed for more demanding outdoor environments.

Choosing the correct IP rating ensures better safety, longer lifespan, and more reliable lighting performance.

For professional COB LED strip solutions, waterproof LED strip options, or customized lighting projects, contact LEDWAY:

Email: sales2@ledwaylighting.com