LizardSkin Sound Control Formula is a high tech coating that stops the vibration of sound waves coming from a surface before they enter the air. LizardSkin Sound Control can be used with LizardSkin ceramic insulation, when used together LizardSkin Sound Control must be applied first. Now you can achieve the maximum in sound and noise reduction greatly enhancing your audio system. Typical applications include firewalls, floor pans, transmission tunnels, doors, hoods, trunk lids, under headliners, inside fenders, panel van walls and other areas that generate vibration and noise. For maximum acoustic performance, coat entire interior surface and the floor inside and out. LizardSkin is completely water soluble, meaning easy clean-up with just soap and water. Each 2-gallon container covers 46-50 square feet with .025-.040 in. thickness 2 gallon = 7.7 liter