If you've spotted a cracked tile or a few orange shards in your garden bed after a windy Sydney night, you're probably wondering: "Can I just glue that back together, or am I looking at a whole new roof?"
At Aabacus Roofing Solutions, we get this question almost every day. The answer isn't always a simple "yes" or "no"—it depends on the age of your tiles, the extent of the damage, and what's happening underneath the surface.
In this guide, we'll break down when a simple repair is plenty and when it's time to consider a full replacement.
1. When a Simple "Repair" (Replacement of Individual Tiles) is Enough
Most of the time, a few broken tiles don't mean your roof is doomed. You can usually opt for a targeted repair if:
Accidental Damage: A stray cricket ball, a heavy branch falling during a storm, or a careless solar panel installer has cracked a couple of tiles.
The "Clean Break": The tile has a single, clean crack but the rest of the roof is in great structural shape.
Localised Issues: Only one section of the roof (like a valley or near a chimney) is showing wear, while the rest looks brand new.
The Fix: We simply "strip" out the broken tiles and slide in matching replacements. Because we've been working in Sydney for over 17 years, we have access to a huge range of tile profiles—from modern concrete to vintage terracotta—to ensure the new tiles blend in perfectly.
2. When "Replacement" (or Full Restoration) is the Smarter Move
Sometimes, continuing to patch up an old roof is like putting a band-aid on a bursting dam. You should consider a more comprehensive replacement or restoration if:
Fretting and Delamination: If your terracotta tiles are "shedding" layers and looking flaky, they've lost their structural integrity. They will continue to break every time someone walks on them.
Porosity: Concrete tiles have a protective glaze. Once that wears off (usually after 20–25 years), the tile becomes porous like a sponge. This makes the roof incredibly heavy when it rains and allows moisture to seep through into your rafters.
Widespread Cracking: If you have 50+ cracked tiles scattered across the roof, it's a sign the entire batch has reached the end of its lifespan.
The "Patchwork" Look: If your roof is covered in different coloured tiles and messy blobs of silicone from previous DIY attempts, a full restoration will significantly increase your home's curb appeal and resale value.
[Image suggestion: A side-by-side comparison of a "fretting" old terracotta tile versus a freshly glazed restored tile]
3. The Danger of the "Quick Fix" (Silicone and Putty)
We see it all the time: homeowners (or "handymen") trying to fix a cracked tile with a big dollop of hardware-store silicone. Here's why we advise against it:
Expansion: Tiles move with the Sydney heat. Silicone is rigid and will eventually pull away, creating a hidden gap where water sits and rots your battens.
Damming: Poorly applied sealant can actually "dam" the water, forcing it to run sideways under the tiles instead of down the roof.
4. Our Recommendation: The Middle Ground
You don't always have to choose between a $200 repair and a $20,000 replacement. For many Sydney homes, a Roof Restoration is the perfect roof restoration middle ground. This involves:
Replacing all broken tiles.
High-pressure cleaning.
Re-bedding and re-pointing the ridge caps.
Applying a 3-coat thermal membrane system.
This gives you the look and protection of a brand-new roof for a fraction of the cost of a full re-roof.
Frequently Asked Questions (FAQs)
Can I walk on my tile roof to check for breaks? We don't recommend it. Aside from the fall risk, if you don't know where to place your feet (on the "laps" of the tiles), you will likely crack more tiles than you started with!
Where can I find matching tiles for my 1950s Sydney home? Don't worry—we've got you covered. We source "second-hand" tiles that match the weathered look and profile of older Sydney suburbs like Ryde, Burwood, and Willoughby so your repair doesn't look like a sore thumb.
How long do concrete vs. terracotta tiles last? Generally, concrete tiles last 30–50 years but need re-coating every 15–20. Terracotta tiles can last 75+ years, but they are more brittle and prone to "fretting" in salty coastal air.
Get an Honest Opinion on Your Roof
Not sure if your roof is "repairable" or "replaceable"? Don't guess. Let a local expert give you a straight answer.
At Aabacus Roofing Solutions, we don't upsell you on things you don't need. If your roof has another 10 years in it with a simple repair, that's exactly what we'll tell you.
Contact Aabacus Roofing Today
Request a Free Roof Health Check from Aabacus Roofing
Call us today on 0404 397 198 – Let's keep your Sydney home watertight!