Wallpaper Paste with Silicone is water soluble and dries clear. The glue is premixed and ready to apply - it doesn't get any easier than this. It is not necessary to prime your walls unless the color you are covering is darker than the paper you are applying. The 4 oz size will paper 3 to 4 dollhouse rooms and the 12 oz size is enough for an entire dollhouse. Both sizes are pictured but this listing is for one 12 oz. jar.