tbh my technological knowledge is not the best I will phone them in the morning and reply , madmonk I always dismissed using gyprime until about a year ago when I was told it was fine ,honest truth is I never knew and kind of thought the same , since then and using it it's been gorgeous to skim over , soaks into the surface rather than drying on top , and money wise I think it works out cheaper to just gyprime and crack on skimming after 10 minutes rather than stabiliser then paste on the grit then wait a day to skim , compared to pva sometimes like op I'd happily pay and use gyprime (4-1) than pva, there is no comparison tbh on some s**t up crap walls I skim over most days
Bg say bond it or gyprime is ok to skim they don't say anything else is , that's up to us lot if we do