Originally posted by: redly1
I had the joy of steaming down some gaudy wallpaper we had in our bathroom, only to find that the wall underneath is "less than perfect" , plus I did some more damage scraping the wallpaper off. It looks like the wall has a couple of coats of primer on top of the drywall. I'm thinking about using an air compressor and a broadcast sprayer to texture the walls and cover up some of the blemishes...can this be done over a primed wall??
thanks
Eh, not recommended unless you modify the standard texture mix.
See, going on regular paper that's on gypsum board (drywall) or a skim coat (using hot mud), the texture sticks really well so you won't have adhesion problems or pieces coming off with wear-and-tear. Going over a latex or other sort of primer, the texture will not adhere as well, especially if it's a thick one. Note, it will still work, but use care.
Several ways around this.
1) Modify the texture mix to include an adhesive or a latex/acrylic additive to increase how well it sticks (you can use this instead of water).
2) Increase the size and thickness of the texture to ensure stickage.
or use a plain skim coat of hot mud. Evadman, I disagree. I think it's cheaper and faster than drywall. I've skimcoated a 10x10 room in about an hour in preparation for a knockdown.
If you want, spread the texture over the primed wall, then smooth it out as if you were doing a knockdown with a nice trowel, at least 12". Let that dry, then cover it again with texture and that way it will stick better because of surface area.
Hope that helps. Honestly, it should work straight onto the primed wall, but try it on a section and see. Texture sticks well, I've found.
Cheers !
