Decorative Plasters Types of Decorative Plasters Application: For Interior only SPS Country Plaster SPS Smooth Plaster SPS Spray Acoustic Plaster SPS Woodchip Plaster Application: For both Interior & Exterior SPS Grain Plaster SPS Granite Plaster SPS Model Plaster SPS Patent Plaster SPS Quartz Emulsion Plaster SPS Rustic Plaster SPS Spray Plaster