Blackout curtains are designed to block out most external light sources, including natural light, which means they also block UV rays to a significant extent. However, the level of UV protection provided by blackout curtains can vary depending on their material and construction.
Some blackout curtains are specifically designed to offer additional UV protection. They may have a special coating or lining that helps block a higher percentage of UV rays. These curtains can be especially useful in areas where protecting furniture, flooring, and other items from UV damage is essential.
However, it's important to note that no curtain can block 100% of UV rays. Some UV light might still seep through the sides or top of the curtains or through any gaps in the window frame. For complete UV protection, especially during intense sunlight exposure, additional measures like using UV-blocking window films or blinds may be necessary.
If you are concerned about UV protection and the potential impact of sunlight on your belongings, it's a good idea to check the product specifications of the blackout curtains you are considering. Look for curtains labeled as UV-blocking or those with a high percentage of light blockage to ensure better protection.