If you’ve ever bought roller shades only to notice the fabric fading unevenly after a few months of sun exposure, you already know how important colorfastness is—especially when you’re investing in window treatments that are supposed to last for years. As a roller shade fabrics supplier, I get asked about this more than any other question: “How long will the color stay true?” Today, I’m breaking down what colorfastness actually means for roller shade fabrics, how we test it, and what you should look for when choosing fabrics for your home or business. Roller Shade Fabrics
First, let’s get the basics straight: colorfastness refers to a fabric’s ability to retain its original color when exposed to different stressors. For roller shades, the main stressors are sunlight, moisture, regular cleaning, and even the oils from your hands when you adjust them. If a fabric has poor colorfastness, it might fade, bleed onto other surfaces (like your walls or curtains when you wipe down the shade), or develop patchy discoloration over time. I’ve seen this firsthand with fabrics that skip proper testing—one client came to us with shades they’d bought from a cheap supplier that faded so unevenly, they had to replace them after just six months. That’s why we prioritize colorfastness testing for every fabric we carry; it’s non-negotiable for us.
Let’s start with the biggest stressor for roller shades: sunlight. Ultraviolet (UV) rays from the sun are the primary cause of fading in window fabrics, because UV radiation breaks down the chemical bonds in the dye molecules that give the fabric its color. For roller shades, which are often installed in rooms with large windows—living rooms, offices, sunrooms—this exposure is constant. So how do we measure how well a fabric holds up to sun? The standard test here is the AATCC 16: Colorfastness to Light, which is used globally for textiles.
This test uses a xenon arc lamp, which mimics natural sunlight, to expose fabric swatches to controlled levels of UV radiation. We compare the color of the swatch before and after exposure using a colorimeter—a device that measures subtle differences in light wavelengths, even ones the human eye can’t pick up. The result is a rating from 1 to 8, with 8 being the most colorfast. For roller shade fabrics, we only stock fabrics with a rating of 4 or higher, and most of our top-selling lineups hit 5 to 6. A rating of 4 means the fabric will hold its color for about 5 to 7 years in average sunlight conditions; a 5 or 6 can easily last 10+ years, which aligns with the typical lifespan of a roller shade. I’ll be honest with you, though—no fabric is truly “fade-proof.” Even the highest-rated fabric will show some slight change over decades, but it’s negligible enough that most people won’t notice it. It’s all about setting realistic expectations, and that’s something we do with every client who comes to us.
Next, moisture and cleaning. Roller shades can get exposed to moisture in several ways: kitchen splashes, bathroom steam, rain if they’re installed on exterior windows, or even just humidity in the air. Poor colorfastness to moisture means two things: either the dye will bleed when the fabric gets wet, or it will fade from prolonged exposure to water. The test for this is AATCC 8: Colorfastness to Water. We soak fabric swatches in distilled water for a specific amount of time, then dry them and check two things: how much the original fabric color changed, and how much dye transferred onto a white control fabric that’s soaked alongside it.
For roller shades that go in high-moisture areas—like kitchens, bathrooms, or patios—we recommend fabrics that score at least a 4 on this test. We also make sure all our fabrics have a stain-resistant, water-repellent finish applied during manufacturing, but that finish doesn’t replace colorfastness testing. Last year, a restaurant client wanted roller shades for their outdoor patio, and they initially opted for a cheaper fabric that looked similar to our top-rated one. When we showed them the water colorfastness test results, they switched to our higher-scoring fabric, and a year later, they reached out to say the shades looked just as good as the day they were installed—no fading or bleeding from rain or cleaning. That’s the kind of peace of mind we want our clients to have.
Then there’s cleaning. Roller shades need to be cleaned regularly to remove dust, pet dander, and other debris, and most people use mild detergent or a gentle vacuum with a soft brush attachment. The test for colorfastness to cleaning is AATCC 61: Colorfastness to Laundering, but wait—most roller shade fabrics aren’t meant to be fully laundered like clothes, right? So we adjust this test to simulate the dry-cleaning or wet-cleaning processes used for window treatments. We test how well the fabric’s color holds up when it’s wiped with a damp cloth and mild soap, which is how most people clean their roller shades at home. A fabric that fails this test will bleed color onto the cloth during cleaning, or fade noticeably, which ruins the shade’s look. For our residential fabrics, we make sure they pass this test with no significant color change or bleeding, and for commercial fabrics that get cleaned more frequently (like in office buildings), we go a step further and test them for multiple cleaning cycles.
Now, it’s important to note that not all dyes are created equal for roller shade fabrics. There are two main types of dyes used in textiles: reactive dyes and disperse dyes. Reactive dyes are popular for natural fibers like cotton, linen, and viscose, because they bond chemically with the fiber molecules, making the color more permanent. For synthetic fibers like polyester, disperse dyes are used—they’re small enough to penetrate the synthetic fiber’s structure, so they don’t wash out or fade as easily. That’s why polyester roller shade fabrics often have higher colorfastness ratings than natural fiber ones, though that doesn’t mean natural fibers can’t be durable. We offer both natural and synthetic options, and we clearly label the colorfastness rating for each fabric so our clients can choose what works best for their space. For example, if a client wants a linen roller shade for their bedroom, we use a reactive dye that’s been treated to boost its light and water colorfastness, so it holds up even with occasional cleaning and sunlight.
I also want to talk about common misconceptions about colorfastness. One I hear all the time is “darker fabrics fade faster.” That’s not necessarily true. While it’s true that some deep shades might show fading more easily because the color is more intense, the rating is based on the degree of change, not the total darkness of the color. A dark fabric with a rating of 5 will fade less than a light fabric with a rating of 3. Another misconception is that pre-washing fabric improves colorfastness. For roller shade fabrics, we pre-wash them during manufacturing to remove any loose dye, so you don’t have to worry about that. If you buy a pre-made shade and it bleeds when you first wipe it, that’s usually a sign it wasn’t properly pre-washed or tested, which is a quality issue we never let our fabrics have.
As a roller shade fabrics supplier, we don’t just test these fabrics in a lab—we also put them through real-world testing in our own showroom. We have a wall of roller shades that we installed five years ago, facing west, so they get direct sun all afternoon. We check them every six months to compare their color, and we’ve only had to replace one fabric because it was a test of a new dye that hadn’t passed our internal light test. That real-world data is just as important as the lab results, because it shows how the fabric holds up in actual use, not just controlled conditions.
So what should you look for when choosing roller shade fabrics based on colorfastness? First, ask for the colorfastness ratings from the supplier—they should be able to provide test results from AATCC (or ISO, if that’s the standard in your region) tests for light, water, and cleaning. Second, match the fabric’s colorfastness to the space: if it’s a room with lots of sun, go for a higher light rating; if it’s a kitchen or bathroom, prioritize water and cleaning ratings. Third, avoid fabrics that don’t disclose their test results—if a supplier can’t tell you how their fabric performs when exposed to sun or moisture, that’s a red flag.
At the end of the day, colorfastness is about getting value for your money. A cheap roller shade that fades in a year might seem like a good deal at first, but you’ll have to replace it sooner, which ends up costing more in the long run. We’ve made it our mission as a roller shade fabrics supplier to provide fabrics that last, and colorfastness is the foundation of that. Whether you’re a homeowner looking for shades for your living room, a contractor outfitting an office building, or a designer working on a commercial project, we have fabrics tested to meet your needs, with clear ratings and honest advice on which ones will work best for your space.
If you’re looking for roller shade fabrics that combine style, durability, and proven colorfastness, we’re here to help. We can send you free swatches of our top-rated fabrics, share the full test results for every product, and work with you to find the perfect options for your project. Don’t settle for shades that will fade and leave your space looking dated in a year—reach out to our team today to talk through your needs and find the right roller shade fabrics for you.
Roller Shade Fabrics References
AATCC Technical Manual. (2023). Test Method 16: Colorfastness to Light, Xenon Arc Lamp.
AATCC Technical Manual. (2023). Test Method 8: Colorfastness to Water.
AATCC Technical Manual. (2023). Test Method 61: Colorfastness to Laundering.
Textile Institute. (2021). Color Fastness in Textiles: A Practical Guide for Specifiers and Users.
Anhui Dongting Window Coverings Co., Ltd.
We’re well-known as one of the leading roller shade fabrics manufacturers and suppliers in China, featured by quality products and good service. Please rest assured to wholesale high-end roller shade fabrics in stock here from our factory. We also accept customized orders.
Address: No. 1, Gaofeng Development Zone, Dongting Town, Guangde City, Anhui Province
E-mail: 3499179665@qq.com
WebSite: https://www.cndongting.com/
