Using your Noble Dark Stealth Roof Spoiler is simple. First, make sure the area at the top of the rear window where you'll attach the spoiler is clean and dry. The spoiler comes with 3M double - sided adhesive. Peel off the backing and stick it firmly in place. When installing, it's best to do it when the temperature is between 70 - 80 degrees and the humidity is low. This will ensure a strong bond. As for maintenance, you can wash it with regular car soap and water just like the rest of your car. Avoid using abrasive cleaners as they may scratch the dark acrylic gloss finish. If you notice the spoiler is loose over time, you can check the adhesive and re - attach it if needed.