Typically, broken and cracked roof tiles result from mechanical damage in the form of heavy foot traffic or falling tree limbs. Cracking may occur in poorly fired product but this generally only occurs when tiles are mechanically constrained in a manner that does not permit thermal expansion and contraction. There was no evidence to support that this has occurred in this instance. Broken, cracked and patched tiles were observed throughout extensive areas of the lower roof sections of both the front and back pavilions. Patching has been carried out using either sealants or mastic and in some cases duct tape. Neither method is acceptable as a means of rectification – replacement is the only accepted means of repair. The following Figures show a selection of examples of this defect.