What to consider
Roughness, staining, discoloration, worn plaster, and exposed finish can look related while calling for different professional assessments. Begin with location, extent, texture, progression, and known finish history.
Rough or worn interior surface
Document whether roughness is isolated or widespread, whether material appears loose, and whether swimmers encounter sharp areas. A worn or deteriorated finish may support a resurfacing or replastering conversation, but photographs alone cannot establish the complete condition.
Staining and discoloration
Note color, location, pattern, and whether the appearance changed after chemistry, weather, metal exposure, or prior treatment. Similar-looking stains can have different causes, so no cleaning method or outcome should be promised before assessment.
Exposed aggregate or finish concerns
Share close and wide photos that show both texture and scale. Natural finish variation, wear, chemical effects, and deterioration can be difficult to distinguish remotely, especially when the existing surface type is uncertain.
Resurfacing and replastering versus acid washing
Pool resurfacing or replastering replaces or renews the interior finish. An acid wash is a condition-based treatment or cleaning process for certain suitable plaster conditions; it does not install a new finish and cannot be assumed to correct deterioration.