Dulux® Venetian® Plaster Glaze Coat Matt is a clear water-based matt finish formulated on a 100% acrylic emulsion resin for application over Dulux Venetian® Plaster range. Easy to use, safe and economical clean-up. Protects Venetian Plaster against staining, dirt pick up, pollution and chemical attack. Matt Glaze is typically specified for protection of Venetian Plaster in external applications. Matt Glaze is film forming and may slightly alter the natural appearance of Venetian Plaster.