This acrylic ground is designed for stain and watercolor-type applications is. While it has a gesso-like consistency, it is not intended as a gesso alternative. It must be applied over a porous and "toothy" surface, such as Golden Gesso to ensure adequate adhesion due to the type and level of solids in the product. Once properly sealed, it is a permanent acrylic film that does not need to be kept under glass, however, the surface is quite delicate and additional protection is recommended.