Yes. In fact, proper surface preparation will make it easier for you to hang your wallcoverings and plays a very important role in assuring satisfactory results. Basic preparation steps include patching any cracks and/or nail holes, washing any greasy or dirty areas, and using a primer/sealer made to be used under wallcoverings. There are other steps that should be taken with new plaster walls, new drywall and other surfaces including paneling and tile walls. Your local independent retailer can advise you as to exactly what preparation is needed for your walls and provide the specific products and tools necessary.