For instance, roller shades might not roll up completely evenly - this is called telescoping. An experienced installer will be able to mount and shim your roller shade to be completely level, but if you window is not square - and most windows aren't - then you might see some slight telescoping or else have an uneven gap at the top. If you purchase a quality product with an aluminum tube inside the roller shade, then tube bending is almost never an issue. However, some of the less expensive brands that use reinforced cardboard or other material for their tube becomes much more problematic. That is why we stick with the aluminum tube centered roller shades for years of reliable usage.
Additionally, overtime, the fabric of the roller shade will be affected negatively by the sun. Even with the highest quality fabrics coated with UV protection, you should expect some simple fading. How quickly the fabric fades is a function of the temperature and humidity of the home, chemical cleaning agents, long term sun exposure, cleanliness of the home and age of the product.
You might also experience some color variation between samples and different production runs. However, it is generally very difficult to see a discernible difference between different runs. The industry responds to complaints of whether the color and texture is within acceptable parameters, by holding the materials two feet apart, and then determining whether one is able to see a discernible difference. Of course, this test must be done with similar light and shadow on each piece.
The bottom line - as long as you order all the roller shades for a single room at the same time, these variances should never be an issue.
With any luck, you are now ready to dive in, fully informed, to beautify your home with modern and efficient roller shades. And, we would be honored to help you with your roller shade project - you can start by getting a quick online estimate by using our online roller shade calculator.