I can not say how well Super Resin would work on the windshield,as i have never used it there,because you may risk smearing from the wipers(according to Autoglym).
One product i have used on windshields,is Liquid Glass,and it worked really well,especially at high speed/heavy rain;this is kind of strange to me,because Liquid Glass and Super Resin are both similar,in that they are Acrylic formulas
