Architectural woodwork restoration is a process that improves or renews the condition of existing wood materials. The task of restoring architectural woodwork can range from a small-scale, simple task that a homeowner can complete, to a complex set of tasks requiring the services of a professional in order to ensure that historic preservation guidelines are met. Depending on the scope of restoration (as defined by the material condition), uses, and affordability, there are three types of restoration: cleaning, repair, and reconstruction.