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Table of Contents
Introduction
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What to look for
Mostly the bracket is wrought-iron, fixed at top with lug set in lead, fixed at bottom by bolts grouted into masonry.
Cast iron is particularly brittle and will readily fracture if subjected to tensile stresses or if the section is significantly reduced by corrosion.
The grid floor panels of continuous balconies need to accommodate a certain degree of thermal and structural movement; welding in situ can restrict movement and cause further cracks.
Water penetration may occur if fixings have been realigned on the wall face, leaving sinkings in the stonework.
What to do if you find a problem
Sinkings in the stonework should be made good with a mortar repair.
The hole in the stone is drilled and chiselled to a wedge shape. The balcony is positioned and a clay cup formed beneath to contain the lead. The lead is run in, pared off to the face of the stonework and staved well in. The lead must be sufficiently hot to run to the back of the sinking.
An effective temporary repair to a balcony grating floor can be achieved by bolting stainless steel plates above and below the fracture.
Wrought-iron brackets are susceptible to rust and, where seriously weakened by corrosion, should be replaced in stainless steel.
Avoiding creating problems
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Historical background
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