Our glass shower wall was installed 30 years ago and it was starting to move and appear unsafe. The two gentlemen from Glass Ninja arrived on time, removed their shoes before entering and examined the issue. They assured us that even though it moved a bit, it was safe, but if we still wanted them to reinforce it, they would. They even gave us instructions on how we could do it ourselves. We decided instead to leave it to the pros. They did a terrific job, cleaned up after themselves and were generally really a pleasure to deal with. I wish all companies were like this one!