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How Does UV Light Effect Floor Coatings?

October 11th, 2024

3 min read

By Tom Dassie

Are you noticing your once-shiny floor coatings looking dull and faded? It’s frustrating to invest in a beautiful floor only to watch it lose its luster because of factors beyond your control. Did you know that Ultraviolet (UV) light could be the silent culprit behind this damage? The invisible rays from the sun and even indoor electric lighting can break down your floor coatings, leaving them discolored and worn out over time.

At CustomCrete, we have 20 years of concrete flooring experience. We've seen many floors lose their luster due to UV exposure. We’re here to help you prevent that with yours. 

This article will explain how UV light damages floor coatings. We'll also share ways to protect your surfaces. With the right knowledge and tools, you can keep your floors looking as nice as the day they were installed.

How UV Light Damages Floor Coatings

UV light might be invisible, but its effects on floor coatings are all too real. UV rays hitting your floor trigger a chemical reaction. It breaks down the coating's molecular structure. This causes discoloration, fading, and a decline in the floor's appearance.

  • Epoxy coatings are particularly susceptible, often turning yellow or losing their gloss over time.
  • Acrylic coatings, while more resistant to UV damage, still requires maintenance to stay in good condition.
  • Polyurethane and polyaspartic coatings offer the best protection, standing up very well to intense sunlight and other UV sources.

Understanding these differences can help you choose the best coating for your space and needs.

Epoxy Coating Yellowing From UV Light Damage

Which Floor Coatings Are Most at Risk from UV Exposure?

When choosing the right floor coating for your space, it's important to consider how it will hold up against UV exposure. Some coatings handle the sun's rays better than others, while some options may need a little extra protection to maintain their appearance. Let’s break down which floor coatings stand up to the challenge and which might struggle when exposed to direct sunlight:

Epoxy Coatings: High Durability, Low UV Resistance

Epoxy coatings are known for their toughness but struggle under direct sunlight. Without proper UV protection, even the strongest epoxy can turn yellow and dull, highlighting flaws instead of masking them. If you notice areas of your floor darkening unevenly or forming shadows from equipment, it’s likely due to consistent light exposure.

Acrylic Coatings: Low Durability, High UV Resistance

Acrylic coatings shine in areas with heavy UV exposure, maintaining their color and gloss longer than most. However, they are not as durable against wear and tear as they are UV resistant. So, they are ideal for low-priority spaces but less suited for high-traffic areas or anywhere your floor must last a long time.

Polyurethane and Polyaspartic Coatings: High Durability, Top-Notch UV Protection

When it comes to standing up against UV light, polyurethane and polyaspartic coatings are the gold standard. They aren't immune to UV damage. But, they resist it better than epoxy or acrylic. So, they are the best choice for sun-exposed areas like entryways and loading docks.

Epoxy Coating Yellowing Due to UV Light Damage


How to Spot UV Damage on Your Floors

How can you tell if your floors are suffering from UV damage? The first signs to look for include:

  • Fading or yellowing in areas near windows or other light sources.
  • Dull or uneven patches on your floor where the original gloss has worn away.
  • Darkening or shadowing that matches the layout of your equipment or furniture.

Identifying these signs early can help you take action before the damage becomes too severe.

Best Practices for Protecting Your Floor Coatings from UV Damage

Protecting your floors from UV damage starts with choosing the right coating for your specific needs. At CustomCrete, we recommend the following strategies:

  1. Opt for UV-resistant coatings like polyurethane or polyaspartic, especially in areas with high sun exposure.
  2. Consider UV-stabilized epoxies for indoor use, which slow down yellowing but still require regular upkeep.
  3. Use blinds, shades, or UV-blocking films on windows to reduce direct sunlight exposure on your floors where possible.  

Implementing these tips can significantly extend the life of your floor coatings, keeping them vibrant and durable and protecting your investment for years to come.

Where to Use UV-Resistant Coatings

Choosing the right location for UV-resistant coatings can make all the difference. We recommend these coatings for:

  • Entryways and reception areas get the most sun. They need coatings that resist fading and discoloration. This will keep a bright, welcoming look for visitors.  Leaving a good first impression.
  • Windowed areas and loading docks face constant sun and harsh conditions, making it essential to have UV-resistant coatings that can handle heavy wear of sun exposure over time.
  • Retail spaces and showrooms need coatings that not only withstand foot traffic but also keep a glossy, polished look to create a lasting good impression on every customer.

Making the Right Choice for Your Floors

Selecting the best UV-resistant coating depends on your environment and your needs. Factors like the level of foot traffic, sunlight and electric light exposure, and your maintenance preferences all play a role. At CustomCrete, we help guide you through these decisions to ensure you get the right solution for your space.

Your floors are a significant investment, don’t let UV damage take away their beauty and durability. Let us help you find the perfect protective coating that matches your needs and stands the test of time.

Ready to Protect Your Floors from UV Damage?

Understanding how UV light affects your floor coatings is only the beginning. The next step is to take action by choosing the right protective solutions. Why let your floors fade when you can invest in a stable and durable  coating that will keep them looking brand new?

Contact CustomCrete today for personalized advice on UV-resistant coatings that will keep your floors in peak condition. Or, if you’re unsure whether your floor needs a replacement, check out our guide on the 5 Signs Your Concrete Coating Needs to Be Replaced. This resource will help you make informed decisions about maintaining your flooring investment.

shiny floor polished concrete