Tikkurila Otex Akva - Quick Drying & Durable Matt Adhesion Primer (Water-Based)Product information Otex Akva is a water based adhesion primer that dries quickly and is suitable for use on a variety of surfaces. It is ideal for use in difficult areas that require special adhesion (such as tiles, glossy surfaces, previously painted wood or PVC) Once dry, Otex Akva creates a solid foundation for subsequent topcoats of paint, resulting in a smooth, long lasting finish. To support the opacity of the topcoat colour, this product can