Wainscoting and Wallpaper: which to do first?
I put the wallpaper up first once and put the wood trim on top. When you go to change the paper you have to score it. That works. I am doing a project now and didn't buy enough wallpaper so am putting board and batten wainscoting up.
Basically I don't think it matters which goes up first. But if I had a choice I would put up the wainscoting first. That way the wallpaper is easier to change.