Why do water based acrylic adhesives cloud when wet applied? Water based acrylic adhesives can be wet applied, but they often cloud when exposed to water. For opaque films, this is usually not an issue, but when using a clear film this can present an undesirable appearance. Water based acrylic adhesives are white when in liquid form and dry clear after boding to the film. When wet applied the water reactivates the adhesive and causes it to return to the white color. This will result in a cloudy appearance in the adhesive. Normally this cloudiness disappears in 24-48 hours as the adhesive dries. However, most clear films and adhesives are not optically clear and they will appear to have some haziness when viewed through a clear substrate. In addition using a wet application method can allow for some liquid to be trapped between the film and the substrate after application. Be sure to use as little liquid as necessary and fully evacuate all liquid during application.