In late-20's Pascal Paddock begin​s using plaster to finish and waterproof his pools. Since then Pool Plaster has been used as a swimming pool surface coating. Pool Plaster is a competitive option for your dream pool. Pool Plaster can be done in a wide variety of colors, material, and different finish techniques to create any desirable appearance in your pool or spa. A secret to long life of any Pool Plaster is properly maintained pool. Improper water balance will destroy any Pool Plaster and in many cases; void the warranty of the surface.