What motion is used to damp clean "no paint" walls?

The correct motion for damp cleaning "no paint" walls is circular or overlapping strokes. This technique is effective because it allows for even distribution of the cleaning solution, ensuring that dirt and smoke residues, which can be stubborn, are thoroughly lifted from the porous surfaces of the walls.

Using circular or overlapping motions helps to minimize the likelihood of streaks or uneven cleaning that might occur with linear motions. The overlapping aspect is particularly important as it ensures no area is missed while cleaning, providing a comprehensive approach to removing contaminants. This method is also gentle on the surface, reducing the risk of damage that might arise from more aggressive methods.

Other cleaning motions, while they may seem effective for different types of surfaces, do not provide the same level of thoroughness needed for "no paint" walls. For instance, vertical strokes might lead to streaking down the wall, and wiping from side to side can miss dirt in corners or cracks. Random patterns could result in inconsistent cleaning and leave areas untouched, which is not suitable for a thorough restoration process.