I just read that this white roofcoating is 90% reflective . I think its called Kool coat (or something). I am a painter and know that white is the most reflective, and flat white is the best. I beleive this rubberized roofcoat is at least satin. Has anyone tried this stuff? I intend to soon. So I can let u'all know what happens. It also is mildew and mold resistant. GL.