Just as with a fiberglass fender or wheel flare, a tire can throw a small rock against the backside and star-crack the fiberglass. To avoid this, we are applying several layers of LizardSkin Ceramic Insulation. LizardSkin is well known in the street-rod marketplace and is gaining popularity elsewhere due to its easy application by spray gun. LizardSkin can be applied just about anywhere, including steel body panels, and is even sandable and paintable with base/clear to make it undetectable. LizardSkin comes in two formulas: Ceramic Insulation and Sound Control.