Gorilla Glue is an incredibly strong adhesive that can be used for a variety of purposes, including attaching mirrors to surfaces. While it is possible to use Gorilla Glue for this purpose, there are a few things you should keep in mind.
First, Gorilla Glue is not designed for use on glass. It will adhere to the mirror surface just fine, but over time the glue can break down and cause the mirror to become detached from the surface. If you do decide to use Gorilla Glue for your project, make sure you apply it sparingly and only to areas where the mirror will make contact with the surface (such as along the edges).
Another thing to keep in mind is that Gorilla Glue expands as it dries. This means that if you apply too much, it can cause the mirror to crack or shatter. So again, be very careful when using this product and only apply a small amount.
If you follow these guidelines, using Gorilla Glue should result in a successful attachment of your mirror. Just remember that this product is not specifically designed for use on glass and take care when applying it to avoid any problems.