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Drive through any established Perth suburb - Morley, Inglewood, Balga, Bassendean - and you’ll see plenty of tile roofs where the cement along the ridge line is cracking, crumbling, or missing in chunks. This is failed pointing, and it’s one of the most common roof problems in Perth. Left alone, it’s also one of the more costly ones, because water getting under loose ridge caps causes serious damage to roof timbers and ceilings.
How much does roof repointing cost in Perth? Repointing only, with the bedding intact, typically runs $1,500 to $4,000 depending on total ridge and hip length. A standard single-storey home with a moderate ridge length usually sits in the $1,800 to $3,000 range. Done as part of a full roof restoration, it’s included in the price.
Typical Perth repointing prices:
- Repointing only (bedding intact): $1,500-$4,000
- Standard single-storey home: $1,800-$3,000
- As part of a full restoration: included in the restoration price
What Is Roof Repointing?
The ridge caps are the angular tiles that run along the peak (ridge) and sloping edges (hips) of your roof. They’re bedded in mortar and sealed with a layer of compound called pointing. The pointing is the visible layer on each side of the cap - its job is to create a weatherproof seal while accommodating the constant thermal movement of the roof.
Repointing means removing the old pointing and applying fresh compound. It doesn’t involve lifting the ridge caps themselves (unless the bedding underneath has also failed - that’s a more extensive job).
Why Pointing Fails
Perth’s climate is hard on cement-based products. Rooftop temperatures in Perth regularly swing from 70°C at midday to 20-25°C by midnight in summer. That’s a 45+ degree daily thermal cycle. Rigid cement pointing can’t flex with this movement - it cracks, and once cracked, water works its way in and accelerates the breakdown further.
UV exposure also degrades cement over time, making it brittle. After 10-15 years of Perth summers, most cement pointing is well past its prime.
Modern Flexible Pointing: A Better Solution
The industry has moved away from rigid sand-and-cement pointing to flexible pointing compounds that accommodate thermal movement without cracking. Flexible pointing:
- Moves with the roof through daily temperature cycles
- Bonds strongly to ridge caps and tiles
- Is water-resistant within hours of application
- Has an expected lifespan of 15-25 years in Perth’s conditions
- Conforms to Australian Standard AS2050
We use flexible pointing exclusively on all roof restoration and repointing jobs. It costs slightly more than cement but is significantly better suited to Perth’s climate.
How to Tell If Your Pointing Needs Work
You can get a reasonable assessment from the ground using binoculars:
Fine cracks - pointing is still mostly intact but has begun to fail. The ideal time to act.
Missing chunks - sections of pointing have broken away. Water enters during rain, and the ridge caps are no longer fully sealed.
Loose or displaced caps - the bedding underneath has also failed and caps are sitting loose. This is urgent - caps can lift in strong winds and once dislodged, water pours directly into the roof cavity.
From inside the roof space: water stains running along the ridge direction, or visible daylight through gaps under the ridge line, confirm that pointing has failed.
What Repointing Costs in Perth
Pricing depends on the roof size (total ridge and hip length) and whether only pointing needs replacing or whether bedding has also failed:
| Work scope | Typical range |
|---|---|
| Repointing only (bedding intact) | $1,500-$4,000 |
| Repointing done as part of a full restoration | Included in restoration price |
A typical Perth single-storey home with a moderate ridge length sits in the $1,800-$3,000 range for repointing only.
Repointing as Part of a Roof Restoration
If your roof is getting a full restoration - clean, repairs, and repaint - repointing is always included in the scope. It’s a standard part of the preparation process. You wouldn’t apply new paint over failed pointing, and doing repointing as part of a restoration is more cost-effective than as a standalone job because the roof is already being accessed.
Can You DIY Repointing?
Flexible pointing compound is available at roofing trade suppliers, so technically yes. But working on a ridge line means being at the highest, steepest point of the roof with no margin for error. Professional roofers use edge protection, anchor systems, and proper footwear designed for pitched surfaces.
The other issue is assessment. What looks like a simple repointing job from the ground can reveal bedding failure, cracked tiles under ridge caps, or deteriorated flashing once someone gets up close. These issues need to be dealt with together rather than missed and left.
For anything beyond a very small, safe-access touch-up, we’d recommend getting a professional out.
The Bottom Line
Repointing is routine maintenance. It’s not glamorous, but catching it before it becomes urgent saves you from a much more expensive leak repair situation. If your home is over 12 years old and you’ve never had the pointing checked, it’s worth a look.
Get an online quote - we assess your pointing, tiles, and overall roof condition remotely from satellite and aerial imagery, with a paid on-site inspection available if needed, and give you a clear picture of what’s needed.
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