When inspecting pool barriers with glass panels, pool safety inspectors should be aware that as the ground (or other foundations) expand and contract with weather conditions, the glass panels may move out of position or be dislodged.
When inspecting, each of the joins should be inspected, and the panel shaken, to ensure that foundation movement has not created a situation where the panel may fall out or break.
If the panels are secure and all other sections of the barrier are compliant, a pool safety certificate should be issued. However, as a matter of good business practice, the pool safety inspector may also advise pool owners to regularly check the joins in case of any movement.