Do Braille signs fall apart?

Yes, unfortunately most of the plastic Braille signs supplied by other companies do...

...this is because they drill holes in the base of their plastic signs and then attempt to glue small acrylic balls into them. Unfortunately this doesn't work; most either fall out by themselves or are easy to vandalize and pick out using just your nails - don't take our word for it, buy one and try it yourself - approximately 25% of our business is the manufacture of Braille and Tactile Signs that are needed to replace signs that were originally made by other companies!

We have a unique way of producing Braille into metals or plastics that doesn't use any seperate materials for the Braille: http://www.as-s.co.uk/braille-signs-public-toilets.htm