As a professional with years of experience in automotive detailing, the water sprayed during film installation is called installation fluid, which is essentially a mixture of soapy water and water. It primarily helps the film slide into place, preventing bubbles and wrinkles, and serves as a crucial lubricant in the film application process. When doing it yourself, you can use diluted dish soap as a substitute, but the ratio must be controlled. If it's too concentrated, the film may slide too much and not adhere properly; if it's too diluted, it may stick prematurely. After applying the film, you also need to spray some water and squeegee it flat to remove excess moisture, otherwise, water stains may appear once it dries. Related to this, this solution is also called slip solution, and choosing professional brands is better to avoid the risk of film corrosion. Applying film isn't just about spraying water—temperature plays a big role. In hot weather, water evaporates quickly, so you need to work swiftly, while in cold weather, the glass needs to be preheated. Remember, even spraying is crucial—use a fine mist spray bottle and avoid over-spraying, as accumulated water droplets can cause the film to peel. Getting the water-spraying steps right ensures long-lasting film application, protecting your car windows from UV rays while enhancing aesthetics—a great daily driving aid.
