What an acid wash does
An acid wash is a cleaning treatment for plaster surfaces. A diluted acid solution is applied to the surface, which removes a thin layer of plaster along with many types of surface stains and deposits. The pool is then rinsed and neutralized. The result can be a noticeably cleaner, lighter surface on pools with certain kinds of staining or scale.
When it can help
Acid washing is most often considered for plaster pools that are structurally sound but have surface staining or scaling that regular treatments have not cleared. It can be a lower-cost way to refresh the appearance of a pool that is not yet ready for a full new finish.
- Plaster in generally sound condition with surface staining
- Scale or mineral deposits that have built up over time
- Situations where the goal is to extend the life of the surface a little longer
When it is not the right move
An acid wash removes some of the surface, so it thins the finish. It is not a fix for cracks, delamination, roughness from wear, or a surface that is failing widely, and it is not appropriate for every finish, especially aggregate surfaces. On an already worn plaster surface, another acid wash can take away material that is not there to lose.
If the surface is past that point, a new finish, meaning resurfacing, is usually the better long-term answer.
Refinishing: the next step
Refinishing means applying a new finish rather than cleaning the old one. The options include fresh plaster or an upgrade to quartz or pebble. We can explain how each compares, so you can decide with the trade-offs in view.
Our honest-recommendation approach
We would rather tell you an acid wash is not the right call than sell you a service that will not last. When you request an estimate, we look at the surface, ask about the pool’s history, and give you a straight recommendation for the situation you actually have. Water conditions afterwards matter too; see water care after a new finish.