Do Legos Fade In The Sun? (How To Protect Them)

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Ah, Lego bricks! Those tiny, colorful, and versatile little wonders that have brought joy to millions around the globe.

Over the years, enthusiasts have amassed vast collections and sought to keep them in pristine condition. But did you know that one of the most common threats to the integrity of your beloved Lego bricks is sunlight?

Yes, you read that right – the very same golden beams that give life to plants and warmth to your skin may be your Legos’ worst enemy!

Why, you ask? Because of something called ultraviolet radiation, or UV radiation for short. It can wreak havoc on your Lego bricks and cause them to fade, discolor, and even become brittle. Yikes!

Nobody wants to see their once-vibrant plastic masterpiece reduced to a shadow of its former self. So do Legos fade in the sunshine?

LEGOs will eventually fade if left out in the sunlight for too long. They can also become faded if left inside but in front of a window or door that the sun comes through. 

Not to fret, dear Lego lover, for we have you covered. This comprehensive guide will help you understand every little detail about this issue so that you can take action to protect your cherished possessions.

Grab your safety goggles and embark with us on this enlightening journey through the science of sun-damaged Legos.

Comprehensive Overview of UV Radiation Effects on Lego Bricks

Effects of UV radiation on plastic materials

Let’s begin with a little science lesson. You see, plastics (including those lovely little Lego bricks) are susceptible to the negative effects of ultraviolet radiation, which is a component of sunlight.

When exposed to UV radiation, the plastic molecules can break down, leading to changes in the appearance and strength of the material.

Impact of UV radiation on Lego color

For Lego bricks, one of the most notable effects of this process is the fading or discoloration of the plastic.

And for collectors and enthusiasts alike, the loss of color is a tragedy worse than stepping on a Lego in the middle of the night.

Significance of finding solutions to maintain Lego integrity

It is, therefore, of utmost importance that we understand why and how UV radiation affects our beloved Legos and what we can do to prevent, or at least mitigate the process.

After all, we want our little plastic treasures to remain as vibrant, detailed, and valuable as possible.

Detailed Examination of Lego Fading Concern

Causes of fading in Lego bricks

1. Chemical composition of Lego plastics

The primary reason why Legos are susceptible to fading lies in their chemical composition. Lego bricks are made of a plastic called acrylonitrile-butadiene-styrene, or ABS. This material is a darling of the plastic industry due to its strength, durability, and resistance to wear and tear.

Unfortunately, ABS is also sensitive to UV radiation, which can cause it to break down and lose its color over time.

2. Aging of Lego bricks; color change and brittleness

And don’t think you’re off the hook if your Lego bricks are hiding away in safe. Older Lego bricks can also succumb to accumulated sunlight exposure or aging.

The plastic can become discolored or even brittle, leading to what Lego enthusiasts call “Lego bone disease.” Yes, this affliction is as dire as it sounds.

Impact of fading on aesthetics

1. Loss of vibrancy and detail

When Lego bricks fade or discolor, it not only dulls their vibrant colors, but it can also diminish the visual appeal and complexity of the creations you’ve assembled with such painstaking care.

No one wants to display a sun-bleached masterpiece!

2. Decrease in collectors’ value

Furthermore, for those who collect rare or valuable Lego sets, fading can lead to a significant reduction in the monetary worth and desirability of their prized possessions. The horror!

Exploring the Extent of Sun-Damage to Lego Bricks

Factors that contribute to fading rates

1. Direct vs. indirect sunlight exposure

The extent to which sunlight damages your Lego bricks will depend on several factors, such as the amount of direct or indirect sunlight they receive.

Direct sunlight tends to cause more noticeable fading and deterioration than indirect sunlight, so it’s essential to choose your display locations wisely.

2. Amount of UV radiation absorbed by Lego bricks

Additionally, the length of time your Lego bricks are exposed to UV radiation and the amount they absorb will determine the severity of the fading.

Generally speaking, the more UV exposure, the more damage to your cherished blocks.

Warnings from Lego manufacturers

1. Manufacturer-provided color care instructions

Lego manufacturers are well aware of this fading issue and often include warnings or color care instructions with their products.

It is always wise to heed the manufacturer’s guidance to preserve and protect your investment.

2. Recommendations for sun exposure

Moreover, the manufacturers typically discourage displaying or storing Lego bricks in direct sunlight for extended periods, and for good reason – your Legos’ continued vibrancy depends on it!

Identifying Care Methods for Lego Bricks

Storage solutions

1. Climate-controlled environments

To safeguard your Lego collection, it is crucial to store your bricks in spaces with consistent and controlled temperature and humidity levels.

The ideal environment should not be too hot, cold, damp, or dry.

2. Choosing the right containers for long-term storage

When it comes to storage containers, opt for those specifically designed to protect your Legos from the sun’s damaging rays.

Look for containers made of UV-resistant materials or are opaque, which can prevent or reduce exposure to harmful UV radiation.

Proper handling

1. Minimizing constant exposure to light

When handling your Lego bricks or putting them on display, try to prevent constant exposure to light, especially sunlight.

Turning off lights in the display area when not in use or placing your Lego sets within enclosed displays can help reduce the risk of sun damage.

2. Handling Lego bricks with clean hands to prevent discoloration

Finally, always handle your Lego bricks with clean hands. Dirt, grease, or moisture on your hands can transfer to the Lego surface, which can cause slight but long-term discoloration or alter its appearance.

Comprehensive Prevention Strategies to Protect Lego Bricks from Sun Damage

Positioning of Lego displays

1. Avoiding direct sunlight exposure

When setting up your awe-inspiring Lego displays, it’s critical to avoid placing them in direct sunlight or areas with high exposure to UV radiation.

Instead, choose well-lit areas that receive little or no direct sunlight. Your precious plastic masterpieces will thank you.

2. Using protective barriers, such as blinds or curtains

If you must place your Legos near a window or source of natural light, consider using protective barriers like blinds, curtains or window films.

These barriers help filter out harmful UV rays and shield your collection from the dreaded sun-induced fade.

Applying UV protection coatings

1. Commercially available protective films

To further shield your Lego bricks from the sun’s damaging effects, you can apply UV protection coatings or films.

There are commercially available products specifically designed to protect plastics from UV radiation, and these can provide an additional layer of defense for your collection.

2. Instructions for applying protective coatings

Before applying any protective coatings or films, make sure to follow the manufacturer’s instructions closely.

Proper application is essential to ensure that the protective layer is effective and does not damage or alter the appearance of your Lego bricks.

Tips for Restoring Faded Lego Bricks

Utilizing hydrogen peroxide

1. Procedure for using hydrogen peroxide on faded Lego bricks

If you’ve discovered that some of your Lego bricks have already fallen victim to the sun’s wrath, don’t despair! There are methods to restore faded Lego bricks, one of which involves using hydrogen peroxide.

By soaking the affected Lego bricks in a solution of hydrogen peroxide and exposing them to sunlight, you can potentially restore their original color.

2. Precautions and safety measures

However, exercise caution when using hydrogen peroxide, as it can be hazardous if mishandled. Make sure to wear gloves and safety goggles, and follow safety precautions while handling the chemical.

Additionally, keep in mind that this method might not be effective for all types of fading or discoloration, and results may vary.

Other restoration methods

1. DIY techniques to restore Lego color

Apart from hydrogen peroxide, there are a few other DIY techniques that Lego enthusiasts have experimented with to restore color to their beloved bricks.

These methods include using specialized plastic polishes, abrasive cleaning materials, or color-restoring sprays.

2. Professional restoration services

For severely sun-damaged or valuable Lego pieces, it might be worthwhile to consider professional restoration services.

Experts in the field can employ specialized techniques and tools to restore the color and appearance of faded Lego bricks.

Best Practices for Collectors and Hobbyists

Tips for retaining Lego value

1. Importance of maintaining original coloring

For collectors who invest in rare or valuable Lego sets, preserving the original coloring and overall condition is crucial.

Proper care, storage, and display practices can help you maintain the value and desirability of your collection.

2. Storing collectible sets in ideal conditions

Make sure to store your collectible Lego sets in climate-controlled environments, away from direct sunlight and other sources of UV radiation.

Proper storage conditions can significantly reduce the risk of fading and other forms of degradation.

Proper care for Lego brick displays

1. Dusting and cleaning recommendations

Even if your Lego displays are not exposed to sunlight, it is essential to dust and clean them regularly. Accumulated dust and dirt can also contribute to discoloration and degradation of the plastic material.

Use a soft, lint-free cloth or a can of compressed air to gently remove dust from your displays.

2. Display case recommendations

When displaying your Lego creations, consider investing in display cases or covers made from UV-resistant materials.

These cases provide an added layer of protection against sun damage and can help preserve the vibrancy and integrity of your Lego bricks.

Learning from Main Causes of Lego Brick Degradation

Understanding Lego plastic quality control

1. How different Lego manufacturing periods affect material

Lego bricks have been manufactured for several decades, and the quality and composition of the plastic material have likely changed over time.

It is essential to understand how different manufacturing periods affect the plastic’s susceptibility to fading and degradation.

2. Role of environmental factors in material degradation

In addition to the manufacturing processes, environmental factors such as exposure to sunlight, temperature fluctuations, and humidity levels can significantly impact the quality and longevity of your Lego bricks.

Adapting to potential Lego quality concerns

1. Staying current with manufacturers’ advice and guidance

Stay up-to-date with the advice and guidance provided by Lego manufacturers, as they may provide valuable information on how to protect and preserve your collection effectively.

2. Applying acquired knowledge to protect future investments

As you learn more about sun damage and how to prevent it, be proactive in applying this knowledge to protect your future Lego investments.

Collectors and enthusiasts alike can benefit from conscientious care practices, ensuring their Lego collections remain beautiful and valuable for years to come.


In conclusion, preserving your Lego bricks from sun damage is of utmost importance if you want to maintain the vibrancy, detail, and value of your collection.

Understanding the effects of UV radiation on Lego plastics and taking proactive measures to protect your bricks can significantly reduce the risk of fading and discoloration.

By implementing proper storage, display, and handling practices, you can enjoy the long-term benefits of a well-preserved and visually appealing Lego collection. Remember to stay informed and apply the knowledge you acquire to safeguard your cherished Lego bricks from the ravages of the sun.

So there you have it, dear Lego enthusiast! Go forth and establish proper care routines to ensure that your collection remains as vibrant, detailed, and valuable as possible.

After all, preserving the beauty of your Lego bricks is an essential part of the joy of collecting and creating. Happy building!

Matthew R

Hi, My name is Matt and I am all about toys! When trying to find accurate information online about toys I was finding it difficult so I decided to make this site.

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