Acrylic is the preferred choice for glazing. Unlike glass, acrylic is shatter-resistant so it easier to transport and also safer if the artwork is placed in a high-traffic environment or you have kids in the home. In the event that the glass breaks, it can slice and damage the artwork. Also, acrylic is significantly lighter than glass, making it easier for the wall to support the weight of the frame.
In terms of UV buffering properties, acrylic is also superior. Standard acrylic glazes have a higher UV buffering percentage compared to its glass counterpart, which has 0%. Although museum glass is on par with museum acrylic, it is usually the second best alternative, especially for fresh unfixed pastel and charcoal works.
But of course, acrylic has its cons too. Acrylic is softer than glass and more easily scratched. However, this can be easily avoided by using a soft microfibre cloth to clean the surface. Overall, acrylic is a much better choice and one we will always recommend as the priority choice.