To wash is to clean using liquid and an appropriate method for the material. It is a general action, not a specification for a restoration result.
What this means at your property
Washing a washable surface can remove some soil while introducing moisture into seams or absorbent layers. The type of residue, product and drying arrangements should be considered together.
What should be specified before washing a damaged surface?
Identify the finish, residue and care instructions. Ask whether the material tolerates the proposed process, how rinsing or residual product will be managed and what will establish that the surface is ready for further use or repair.