I spoke with an installation tech at metro restyling. com today and asked him about 3m di noc installation. He said just make sure the surface is clean and dry. He said use dish soap to clean the parts and not alcohol. Rapid Tac should not be used and no need to use a prep solution. He said use a heat gun on low to soften the material so it will stretch and conform to tight crevices and corners. Gonna get me some and try what he says.