Premium Quality Wallpaper Mucilage is easy to apply, dries clear and is water soluble. 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 rooms and the 12 oz. size is enough for an entire dollhouse. Both sizes are pictured but this listing is for one 4 oz. jar.