family wagon
Senior Member
You were right the first time. Denatured and rubbing are different alcohols (ethanol vs propanol). The former is the "active ingredient" in your beer. When sold as denatured, it has other additives blended in to make it highly unsuitable for human consumption -- thus "denatured."
But anyway, even though they're different, both should work equally well for prepping the surface for silicone.
But anyway, even though they're different, both should work equally well for prepping the surface for silicone.