Architects’ ASP is a water-based primer undercoat (5-8% sheen) suitable for use on all interior and exterior surfaces on woodwork and all building plastics as well as tiles, glass and metal. It is easy to apply and extremely robust, thus offering a durable and long-lasting base for a wide variety of surfaces. With its low odour and quick drying time of two hours, it is the go-to preparation tool for a DIY or professional project and is the ideal preparation for both water-based and oil-based finishes.