ROOFS & CHIMNEYS
Roofs keep storm water away from the sides of buildings, and protect building interiors. They also make important contributions to the appearance of a building, and reflect the era of construction.
Common problems with roofs include corrosion of metal roofs (especially where sheets overlap or are damaged), failure of fastenings, decay of underfired terracotta tiles and damage to flashing, capping or roof gutters.
Maintenance principles DO Keep roofs clear of rubbish, leaves, twigs and debris. Check roofs for: – Metal: • loose or raised sheets • loose or raised screws • rust around screws or where the sheets overlap – Slate or terracotta: • slipped, cracked or broken tiles • damaged or missing flashing or capping • damaged or rusting roof plumbing – Check eaves for signs of paint failure or decay, which may indicate problems with the roof – Limit repairs to what is necessary, including: • patch repairing small holes in metal sheets or guttering (for example, with a soldered iron patch) or repairing rusted joints with a short ‘slip sheet’ • replacing short lengths of metal sheets or individual tiles to match existing profile and appearance, and to maintain watertightness • maintaining a painted surface on corrugated sheet metal roofing to prolong its life, especially where appropriate primers are used • re-rolling buckled roofing iron • repairing or replacing damaged flashing with original materials (such as lead or galvanised iron) • When recladding, use the same materials and details as the original roof (see page 41)
Tip for owners Seek advice from the City of Casey’s Heritage Planner and/or a heritage specialist before making changes to a roof.
When checking a slate roof, look out for slipped slates and damage to flashing and capping.
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CITY OF CASEY: HERITAGE HANDBOOK
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