This is an interesting idea. It really depends what you are going to use to attach the paper bags to the wall with. If you are going to use pva or another similar glue then that should seal the wall for you. if you plan on using a spray on adhesive then i would recommend sealing the drywall first, and if you plan on changing the covering in the ne adidas outlet ar future then a separate seal would als adidas outlet o be advisable. adidas outlet Assuming that it is an interior partition (not an exterior facing wall) then sealing the wall will only help with removing the covering afterwards, especially if you use wallpaper paste to put the paperbags on. Personally if you are unsure about how it will turn out this would be the best option but i adidas outlet f you have used these materials before then go ahead and attach your wall covering with pva glue which will seal the wall and attach your paper bags although it may give a shiny finish which is not what you are after.in conclusion my personal opinion is that you should seal the wall and use wallpaper paste to attach the bags, giving you time to work with the materials, reducing the shine produced and making it a lot easier to rectify and problems you might have.