Hi there , we have purchased some heavy double glazed bi fold doors as part of a new extension. It is 4000mm x 2400mm 5 panel bi-fold door . Over a period of time , we have had the same top hinge on the one panel , break three times.This being the panel used the most as it opens onto our backyard.
We have been getting no joy with the supplier of the doors in permanently resolving this issue .
Is there anyone who can give me ideas on what would cause a hinge to repeatedly break ?