Frost ยท Cardigan, Creswick, Ballarat Central
Frost-cracked concrete roof tiles in Ballarat
Ballarat winters are cold, and the number of hard-frost nights has been rising. That creates a specific problem for older concrete roof tiles: freeze-thaw cracking.
Why concrete tiles go porous
Concrete tiles leave the factory with a protective glaze. Over fifteen to twenty years that glaze wears off and the concrete becomes porous, soaking up rainwater on damp winter days like a sponge.
How frost cracks them
When the temperature drops below freezing overnight, the water trapped inside the tile freezes and expands. That internal pressure cracks the tile from the inside out. The micro-cracks are hard to see at first but eventually split the tile during the next heavy rain.
How to prevent it
Applying a clear, breathable waterproof sealer to older concrete tiles stops them absorbing water in the first place, which protects them from freeze-thaw damage and extends the life of the roof.
Tell us what your roof is doing.
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Phone: 03 4320 0482
Email: [Email Address]
Service area: Ballarat & district, VIC
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