Multi-Glaze Type M is the quickest surface-skinning product for indoor shop use. It typically forms a skin overnight and can be painted within 3 to 14 days depending on temperature and other conditions. Multi-Glaze Type M remains elastic and flexible throughout its lifetime, providing the most durable, long-lasting adhesion you can find in a glazing putty. Creates a watertight seal between the wood sash and window glass. Proven by decades of high-performance. Preferred brand of countless window restoration professionals.