New Slate Roof In Manly NSW

A full slate roof replacement in Sydney’s Northern Beaches, preserving character while ensuring long-term performance.

Some homes on Sydney’s Northern Beaches wear their age beautifully. Like all buildings, eventually the roof will need replacing. This Manly home had a slate roof more than 100 years old. And while the original craftsmanship had lasted well, time and weather had finally taken their toll.

Why the Roof Needed Replacing

This was not a minor patch-up. The existing roof had reached the end of its life. The underlying battens, sarking, and fixings had deteriorated — issues that aren’t always visible from the street, but can lead to leaks, ongoing repairs, and long-term structural damage if left unaddressed.

Rather than patching an ageing system, the owners opted for a full re-roof — future-proofing the home and ensuring the structure beneath the slate was rebuilt properly, from the rafters up.

Material Choices: Premium Slate with a Traditional Finish

For this project, we used Canadian Glendyne slate, one of the most consistent and reliable roofing slates available today. It’s a great choice for Sydney’s climate, with excellent durability and a clean, classic appearance that complements older homes.

To support the slate, the roof was rebuilt using:

• High-performance Permo Air HT sarking for superior weather protection
• European pine battens installed to current industry standards
• Copper nail fixings for maximum corrosion resistance
• Traditional terracotta ridge caps to preserve the home’s original character
• Custom leadwork and Colorbond valleys in Woodland Grey for a clean, durable finish

Every material was chosen to balance timeless aesthetics with modern performance — ensuring this roof will last for decades, not years.

The terracotta ridge caps are a popular detail often found on Federation and Edwardian-era homes in Sydney. They not only preserve the visual style of the original roof but also help tie the new roof into the character of the home.

Extra Upgrades for Long-Term Protection

A re-roof is also a chance to upgrade the entire roof system, not just the tiles. Each of these details was chosen to enhance the roof’s performance, especially in heavy rain or storms, which are common across the Northern Beaches:

• New Colorbond valleys for stronger, more reliable drainage
• Upgraded gutter brackets to support the new load
• Leaf guards to keep debris out of the gutters
• Box gutter replacements to reduce overflow risks
• Chimney pot capping to finish the look and protect the flue

Project Timeline and Outcome

This slate re-roof took approximately 6 weeks, including scaffolding, safety compliance, demolition, installation, and finishing. The property remained occupied throughout the work, so we carefully staged each part of the project to minimise noise, dust, and disruption.

The result is a refined, weatherproof finish that respects the home’s heritage while delivering the performance of a fully modern roof system — one that should last well into the next century.

Thinking About Re-Roofing Your Slate Roof?

If your home on the Northern Beaches has an old slate roof showing signs of wear, it might be time to consider a re-roof. Whether you need a full strip and rebuild or just want an expert opinion, we’re here to help.

We look after heritage roofing on the Northern Beaches including Manly, Mosman and Mona Vale.

Get in touch for a free quote or inspection. You’ll speak directly with the team who’ll be doing the work.

Slate Roofing FAQs

How long does a slate roof last in the Northern Beaches climate?

With proper maintenance, a slate roof can last well over 100 years. The slate itself is incredibly durable, and in Sydney’s Northern Beaches climate, it’s ideal due to its resistance to salt air, wind, and seasonal weather changes.

Do I need council approval to repair or replace a slate roof on a heritage home?

If your home is in a heritage conservation area or heritage-listed, you may need council approval. Any slate roof work must follow heritage guidelines, particularly around materials, colour, and method of installation.

Can you match new slate to existing slate on older homes?

Yes, we regularly use reclaimed slate or source new slate that closely matches the colour, texture, and size of the original. This ensures seamless repairs that retain the roof’s character and meet heritage standards.

What are the signs my slate roof needs repair or replacement?

Look for missing or slipping tiles, visible water stains inside the home, pieces of slate in the gutters, or signs of sagging. Any of these could mean your roof is compromised and needs inspection.

Why is lead flashing important on a slate roof?

Lead flashing protects the vulnerable joins on your roof, especially around chimneys, valleys, and skylights. It’s long-lasting, flexible, and essential for preventing leaks. Without good flashing, even perfect slate work will eventually fail.

Is slate roof cleaning safe and necessary?

Yes. Cleaning removes moss and lichen that can trap moisture and accelerate tile decay. It also gives us the chance to inspect your roof for hidden damage. Cleaning should be done every few years using non-abrasive, roof-safe methods.