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Common causes of roof leaks in older Melbourne homes

Roof Leaks

Common causes of roof leaks in older Melbourne homes

Melbourne's older suburbs are full of beautiful period homes, and beautifully aged roofs. Decades of weather leave a recognisable set of faults behind.

The faults we see again and again

Melbourne’s older suburbs are full of beautiful period homes, and beautifully aged roofs. Decades of weather leave a recognisable set of faults behind.

Perished pointing on the ridge

On an older tiled roof, the rigid mortar pointing has usually cracked and crumbled. It’s the single most common leak source we find, and it’s why repointing comes up so often on heritage homes.

Decades of Melbourne weather leave a recognisable set of faults on older tile roofs.
Decades of Melbourne weather leave a recognisable set of faults on older tile roofs.

Brittle, weathered terracotta

Old terracotta tiles become brittle and crack underfoot or in a temperature swing. Matching them takes some care, but individual tiles can be replaced without re-roofing.

Rusted valleys and flashing

The metal valleys and flashings on a period roof are often original, and decades of water have rusted them thin. Replacing them is a frequent part of leak repairs on older homes.

Rusted roof valley requiring repair

Tired sarking, or none at all

Many older Melbourne roofs were built with little or no sarking (the secondary membrane under the tiles). That leaves less margin for error, so small faults leak sooner. A restoration or re-roof is the chance to put that right.

The honest answer

On an older home we’ll always tell you whether targeted repairs will do, or whether the roof has reached the point where a restoration or replacement is the better spend.

Talk to a local roofer

If any of this sounds like your roof, book a free inspection and we’ll trace the cause and put a fixed repair price in writing. See also our roof leak repairs, roof repointing, tile roof repairs and roof restoration.

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