Coatings such as these will not hurt the film or interfere with the film’s self-healing properties as long as the correct product and amount is used. Clear Bra Indy recommends these coatings be installed over top of the film. There’s really no advantage to have the coatings installed before the film. Installing a coating before the film is installed could create adhesion issues. This could cause the film to lift along the edges. Did you know that Clear Bra Indy is a leader in Ceramic Coatings? We are a Ceramic Pro Auto Spa!