Wallpaper or paint first. And in 999 of cases it should be white and no other color. Never use shiney paint. To paint over wallpaper start by cleaning the wallpaper with trisodium phosphate which will remove any oils and chemicals on the wallpaper so its easier to paint over.
In addition to applying a primer try to use oil based paints to minimize the impacts of moisture of adhesives source. If you have long edges of wallpaper unrolling or air bubbles beneath the surface you will be better off removing it completely. It covers wall imperfections adds unique textures and patterns and creates a finished wall surface thats difficult to replicate with paint.
No like really really bad. Wednesday october 17 2007. If the paint is going to be a lighter color than the wallpaper or the wallpaper has a printed pattern it might need an undercoat so the wallpaper pattern doesnt show through.
One thing to be cautious of is the odor of fresh paint. Try painting a small area first to see how it will look. Moisture from paint can often loosen wallpaper glue causing bubbles or peeling.
Ceiling is always first when doing a complete room. Yes wallpaper can be painted over. Painting over wallpaper can look really bad.
Any existing wallpaper will need to be removed and walls primed before painting as well. Paint on average is cheaper and requires very few supplies and an amateur can apply it. Then cover any seams in the wallpaper with joint compound so they dont show through the paint.
However if it is a finished paper it is not to paint then paint your ceiling then your woodwork then hang your wallpaper washing down gently with clean warm water. Quality vinyl wallpaper thats professionally installed can last up to 15 years with little maintenance source. Do i wallpaper or paint first.
Ive painted over wallpaper many times with good results. Depends if wallpaper is finished paper or one you paint if finished paper paint first that way you get no paint on the new wallpaper.