Updated from Original Post: December 2024

Traditional Mortar vs Modern Dry Ridge Systems Explained

Traditionally, yes. Ridge tiles were fixed using mortar (cement), and many older roofs still use this method.

However, for most new roofs and many refurbishment projects, modern dry ridge systems are now the preferred solution. They are mechanically fixed rather than bedded in mortar, making them more durable, lower maintenance and compliant with current roofing standards.

If you’re building a new roof or replacing an ageing ridge, a dry ridge system is now the solution most roofing professionals recommend. Mortar can still be used, for example in conservation areas where new work should match the existing aesthetic; however, the ridge tiles themselves should also be mechanically fixed.

Why were ridge tiles traditionally cemented?

For decades, bedding ridge tiles in mortar was the accepted method across the UK and Ireland.

Fresh mortar creates a strong bond between the ridge tile and roof structure, but like any cement-based material, it changes over time.

Constant exposure to rain, frost, heat, wind and natural movement gradually causes mortar to crack. Once cracks appear, water can penetrate the ridge, pieces of mortar can become loose and regular maintenance is often required to keep the roof weatherproof.

For homeowners, this usually means periodic repairs. For contractors, it means call-backs that nobody really wants.

Why are more roofers choosing dry ridge systems?

Modern roofing has moved on.

Instead of relying on mortar, dry ridge systems mechanically secure ridge tiles using specialist fixings, clamps and ventilated components.

The result is a ridge that remains secure while allowing the roof to naturally expand, contract and ventilate.

For contractors, installation is quicker and cleaner.

For homeowners, maintenance requirements are significantly reduced. For architects and specifiers, dry ridge systems offer a reliable solution that meets current regulations while supporting long-term roof performance.

Cemented Ridge vs Dry Ridge

One of the biggest advantages of a dry ridge system is something many people never see.

Ventilation.

A well-designed ridge installation allows air to move naturally through the roof space, helping to reduce the risk of harmful condensation build-up that can damage insulation and roof timbers over time.

Combined with a properly designed pitched roof ventilation system, this creates a healthier, longer-lasting roof structure.

Are dry ridge systems required by Building Regulations?

Current roofing standards, including BS 5534 and BS 8612, have encouraged widespread adoption of mechanically fixed dry ridge systems because they provide improved wind resistance and consistent fixing performance.

While some repair work may still involve mortar, most new roofing projects now specify dry ridge systems as best practice.

Which dry ridge system should you choose?

Choosing the right system depends on your roof covering, project type and installation requirements.

Kytun’s Uni-Fix Dry Ridge Kits are designed to suit a wide range of slate and tile roofs, combining:

• Fast installation
• Secure mechanical fixing
• Continuous ventilation
• Excellent weather resistance
• Low maintenance
• Compatibility with modern roofing standards

For larger commercial projects or new-build developments, our technical team can also advise on complete dry fix roofline solutions.

Building a roof? Think beyond the ridge.

The ridge is only one part of a complete roofing system.

For the best long-term performance, it’s worth considering how each element works together.

Our Dry Fix Roofing Systems include:

• Dry Verge Systems
• Uni-Fix Dry Ridge Kits
• Ridge Capping
• Valley Systems
• Pitched Roof Flashings
• Cavity Trays
• Lead Alternatives

Together, they help create roofs that are faster to install, better protected against severe weather and designed to require less maintenance throughout their lifetime.

Frequently Asked Questions

Is mortar still used on ridge tiles?

Yes. Many existing roofs still have mortar-bedded ridge tiles, and repairs are sometimes carried out using mortar. However, dry ridge systems are now widely regarded as the modern solution for new roofs and many refurbishment projects.

How long do cemented ridge tiles last?

This depends on weather exposure and installation quality, but mortar can crack and deteriorate over time, requiring maintenance or replacement.

Can you replace a cement ridge with a dry ridge?

In many cases, yes. Existing mortar-bedded ridge tiles can often be replaced with a modern dry ridge system during roof refurbishment.

Are dry ridge systems better in windy areas?

Because dry ridge systems are mechanically fixed and tested to current standards, they generally provide excellent wind resistance when installed correctly.

Do dry ridge systems require maintenance?

Very little. Unlike mortar, there is no cement to crack or fall away, making dry ridge systems a low-maintenance solution.

Related Resources

If you’re planning a new roof or refurbishment, you may also find these guides useful:

• Benefits of Dry Verge Systems Over Traditional Mortar
• Wet Verge vs Dry Verge: What’s the Difference?
• What Are the Eaves of a Roof?
• Homeowner’s Guide to Roof Eaves
• Step-by-Step Guide to Installing a Dry Verge System

Need Technical Advice?

Whether you’re an architect developing a specification, a contractor selecting products for site or a homeowner planning a roof refurbishment, our technical team can help you choose the right solution. Explore our Dry Fix Roofing Systems, Pitched Roof Ventilation, Aluminium Rainwater Systems and Architectural Aluminium ranges, or get in touch to discuss your project.