The replastering process, step by step

What actually happens across a replastering job, how long each stage takes, and where the timeline usually slips.

Replastering follows the same sequence regardless of which finish goes back on. Knowing the sequence makes it much easier to tell whether a job is running normally or badly.

The sequence

  1. Drain the pool. Timing matters here: an empty shell can float or crack in high groundwater, so this is not a stage to leave sitting.
  2. Remove the old surface, either by chipping it out mechanically or by hydroblasting. This is the noisiest, dustiest and most disruptive stage.
  3. Inspect the exposed shell. This is the moment hidden defects appear, and the moment quotes change if they are going to.
  4. Repair any structural defects, corrosion or hollow areas found.
  5. Prepare and bond the surface so the new finish adheres. Skipping or rushing this is the single most common cause of premature failure.
  6. Apply the new finish, plus tile line and any other surface work in scope.
  7. Refill immediately. A new finish should not be left to dry out.
  8. Start-up chemical balance over the following days, with careful brushing. The finish cures underwater and this period materially affects how long it lasts.

Where the timeline slips

Two stages account for most delays. The first is the inspection after removal, where discovered damage adds both repair time and a re-quote. The second is weather, since neither surface application nor curing tolerates rain or extreme temperature well.

The refill and start-up stage is where corners get cut on a running-late job, and it is the worst possible place to cut them. The finish is curing during that window, and a rushed or unattended start-up shortens the life of a surface you have just paid for.

What to ask about the start-up

  • Who is responsible for the start-up, the contractor or you.
  • How many days of brushing and balancing are included.
  • What the water chemistry targets are during the cure, and who is measuring them.
  • Whether the warranty depends on the start-up being done a particular way, and whether that is in writing.