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St Patrick's Church, Kilsyth

St Patrick's Church, completed in 1964 and listed Grade A, was built of brick diaphragm walls surmounted by a strip of clerestory glazing.

A deep copper fascia, sloping upwards and outwards, conceals a series of roof pitches with valley gutters between, clad originally with copper sheet and drained by an internal copper downpipe.

The structure has suffered over the years from damage caused by rainwater penetrating the roof. The causes of leaking were twofold: the valley gutter outlets with 60mm diameter rainwater downpipes were too small to cope with heavy downpours of rain, and the flat parapet to the fascia, formed of flat-folded seams of copper, had allowed water to enter the structure.

The architect has removed the aluminium, repaired the structure and timber boarding where damaged, and restored the roof covering to its original - traditional 450mm-wide longstrip copper sheets with double-lock standing seams.

New ridges, clad with copper, have been designed with a series of internal 120 x 50mm and 100 x 38mm timber blocks, spaced apart at 400mm centres, to provide gaps allowing internal timbers to be ventilated.

The small rectangular valley gutters have been replaced with new larger trapezoidal stainless steel gutters which direct rainwater into lead spigots and a 110mm diameter UPVC rainwater system; this in turn discharges into the original 150mm copper downpipes, now relined, which are set in the brick diaphragm walls The parapet has been surmounted with a new Code 7 lead cap and drop apron.

The fascia is reclad with new longstrip copper sheets with batten roll seams.

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