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How to Tell If Your Roof Needs Replacing

Not sure whether to patch or replace? Here are the seven signs your roof has passed its service life.

Roofing advice·5 min read·7 signs to check

The seven signs

1. It's past its service life

Concrete tile roofs last roughly 25 to 40 years, terracotta 50+ and Colorbond 40 to 50. If yours is past that mark, every repair is borrowed time.

2. Leaks keep coming back

One leak after a specific storm is a repair. Leaks in different rooms every winter is a pattern, and it means the whole roof is failing, not one tile.

3. Tiles are cracked or crumbling

Widespread cracking, glaze gone, tiles slipping. When you can't walk the roof without breaking tiles, patching is no longer economical.

4. Moss and lichen everywhere

Moss holds moisture against the tile and accelerates breakdown. A little is cosmetic. Everywhere is a warning sign.

5. Sagging roofline

A visible dip in the ridge or between rafters means the structure underneath is compromised. That's past a patch.

6. Granules or tile chips in the gutters

Your roof is literally washing away into the gutter. It's losing material faster than it's keeping it.

7. Repair quotes keep climbing

When repairs approach 40 to 50% of a new roof, you're paying twice for the same problem. That's the line.

Not sure which side of the line your roof is on? Book a free inspection. We'll tell you straight, even if the answer is you've got a few years left.

More guides

Related: Roof replacement in Adelaide and What a roof costs.

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