Yes. RSDW can be used as a primer or over existing paint. The surface needs to be prepped in order for the product to adhere correctly. Descale, scraping off any flaking rust or chipped paint with a wire brush or coarse steel wool. Remove all dust, dirt or debris (failure to do so reduces RSDW's ability to penetrate into the metal below surface level. RSDW is transparent with amber tone for easy frame inspection.
7 Strong Industries highly recommends three very thin coats for the best product performance, at a minimum 2 very thin coats.
Because RSDW is unique in that it is non-conductive, it will not work as a primer for powder coating.
7 Strong Industries recommends 24 hours between coats to allow RSDW to fully penetrate the substrate. Depending on humidity, air flow, ambient temperature shorter dry times maybe reached. If RSDW is tacky, not wet additional coats may be applied.
Since RSDW penetrates the substrate below surface level, in order to remove RSDW approximately 3 mil (the thickness of a piece of paper) of the surface must be removed.
The best method for applying RSDW is using a spray gun. This allows more control when applying very thin coats.