Inground pools can have many different types of surfaces. Fiberglass, Vinyl, Plaster or PebbleTec. Plaster is the most common interior finish for many inground pools, and there are many choices of colors available. Colorants or Quartz additives can be added to the plaster mix to create interesting hues, and a more durable surface than the normal marble-based plaster mix. Additives also have the advantage of helping to hide minor imperfections or staining of your pool surface. Whichever pool plaster surface you choose, there are some tips to ensure a properly applied, cured and cared for plaster pool surface.