Ridge capping repair cost

Your roof's ridge cap - that raised line running along the peak where two roof slopes meet - takes a battering from Canberra's weather. Ridge caps are built to last, but frost, wind, and the temperature swings we see here drive pointing and bedding to fail over time. When you need repairs, the cost depends on what has actually failed and how much of the ridge needs work.

What ridge capping costs to repair

A typical ridge capping repair runs from $1,400 to $2,500 (inc GST) for a single-storey home. This covers tracing the fault (usually cracked pointing, failed bedding, or a slipped cap), making it safe, and completing a lasting fix.

The price sits within that range because ridge capping repair is site-specific. A small crack in the pointing on one section costs less than re-bedding and re-pointing half your ridge, or replacing a section of the cap itself. The only way to know the exact price for your roof is an inspection.

Why ridge caps fail in Canberra

Ridge caps sit at the peak of your roof, the most exposed point on the whole house. They are bedded in mortar and pointed (sealed) to keep water out. Canberra's climate attacks them relentlessly.

The freeze-thaw cycle is the biggest culprit. Water gets into tiny cracks in the pointing or into the bedding underneath. When the temperature drops to minus five, that water freezes and expands. The ice forces the mortar apart. When it thaws, small gaps open up. This happens dozens of times each winter, and the cracks grow wider. By spring, water runs through those gaps and into your roof space.

Wind also matters. Canberra's westerly gusts push on the ridge cap, especially on exposed southern slopes. Over years, this movement loosens the mortar.

How to spot ridge cap trouble

Look for:

• Cracked or missing pointing (the grey mortar seal between caps)
• Mortar that crumbles away when you brush it with a stick or hose from the ground
• Caps that sit at an uneven angle or look like they have shifted
• Damp patches on your ceiling near the ridge (inside, in the roof space)
• Mould or staining on your roof space timber beams running along the ridge

Do not climb onto the roof yourself. Roof work is high-risk and a fall from the ridge is serious. An inspection from a professional is safer and gives you the facts.

What the repair involves

When a roofer inspects your ridge, they are checking:

• Is the pointing cracked or missing?
• Is the bedding (mortar underneath the cap) sound or failing?
• Is the cap itself intact, or is it cracked, broken or slipped?

The fix depends on what they find.

Re-pointing is the most common repair. The roofer removes the old cracked pointing, cleans out the joint, and installs new mortar. This is fast and stops new leaks.

Re-bedding and re-pointing is a bigger job. If the mortar under the cap has failed, not just the seal on top, the cap has to come off. The old bedding is removed, the bed is cleaned and renewed, the cap is reset on good mortar, and the joint is pointed. This is more thorough and lasts longer than re-pointing alone.

Replacing a section happens if the cap itself is cracked, broken, or so slipped that it cannot be reset safely. A new cap section is installed with proper bedding and pointing.

All of these fit within the $1,400 to $2,500 range for a typical single-storey home. Larger homes or ridge caps in poor condition may sit at the top of that range.

How to get a quote

The first step is an inspection. We offer two options depending on what you need.

A free roof estimate takes about 30 minutes. You describe the trouble, we give you a written quote on the spot to think over. No obligation, no fees. This works well if you just want a quick answer on ridge cap repair or you are weighing up your options.

A $99 roof inspection is the full picture. The roofer photographs the damage, inspects and tests the ridge cap (including water testing if needed), and provides a detailed written report with a quotation within about 24 hours. You get the facts, the photos, and a quote based on exactly what your roof needs. The $99 fee covers all of that.

Book either option online at leakyroof.com.au/book or call (02) 5133 5608. We serve the ACT and nearby Queanbeyan, Monday to Friday, 9am to 5pm.

If you have had a roofer inspect your ridge already and want a second opinion, we also offer a Roof Health Check for $199, which is a focused inspection of a specific problem area.

Next step

Get in touch to arrange your inspection or free estimate. We will book you in at a time that suits you, turn up on the day with photos and a report, and give you a clear picture of what your ridge needs and what it will cost. If you have questions about the repair itself or about the options available, we are happy to walk you through it all.

Call (02) 5133 5608 or book online at leakyroof.com.au/book.