Posted on February 24th 2025 by Total Exterior Group
The Benefits of Dry Ridge Installation Over Mortar Beds
The roofing industry has evolved, and one of the most significant advancements is the dry ridge system. Unlike traditional mortar beds, which deteriorate over time, dry ridge systems offer durability, flexibility, and enhanced protection. Since 2015, building regulations have mandated the use of dry ridge systems on all new-build properties in the UK. This shift ensures better longevity and performance.

What is a Dry Ridge System?
A dry ridge system is a method of securing ridge and hip tiles without using sand and cement mortar. Instead, it utilizes screws, clamps, and ventilated ridge roll membranes to keep tiles in place. This modern approach provides enhanced durability and weather resistance compared to traditional mortar bedding.

Key Benefits of Dry Ridge Installation
1. Increased Durability and Longevity
Mortar deteriorates over time due to weather exposure, temperature fluctuations, and structural movement. A dry ridge system eliminates this issue by providing a mechanically fixed solution that remains intact for decades.
2. Maintenance-Free Roofing
Traditional mortar bedding requires frequent inspections and repairs due to cracking and dislodging. Dry ridge systems, on the other hand, require minimal upkeep, reducing long-term maintenance costs.
3. Improved Ventilation and Breathability
One of the most significant advantages of dry ridge systems is their ability to allow airflow through the roof space. Proper ventilation prevents condensation build-up, which can lead to timber rot and mould growth.
4. Better Weather Resistance
Mortar can weaken over time due to rain, frost, and wind. A dry ridge system uses mechanically fixed clips and screws, ensuring tiles remain secure even in extreme weather conditions.
5. Compliance with Building Regulations
As of 2015, the UK Building Regulations require dry ridge and hip systems on all new builds. This mandate ensures improved roofing standards and long-term sustainability.
6. Environmentally Friendly Solution
Unlike mortar-based systems that contribute to construction waste, dry ridge systems use recyclable materials. This makes them a more sustainable and eco-friendly roofing choice.
How Dry Ridge Installation Works
The installation process of a dry ridge system is straightforward and efficient:
- Preparation – Old mortar is removed (if applicable), and the ridge area is cleaned.
- Ridge Roll Application – A ventilated ridge roll membrane is laid along the ridge to allow airflow.
- Tile Fixing – Ridge tiles are aligned and secured using screws and mechanical fasteners.
- Final Adjustments – The system is inspected to ensure a secure and weatherproof fit.

Frequently Asked Questions (FAQ)
1. Is a dry ridge system better than mortar bedding?
Yes, dry ridge systems are superior due to their durability, low maintenance, and compliance with modern building regulations.
2. Are dry ridge systems mandatory for all new-build homes?
Yes, since 2015, UK building regulations require all new-build properties to use mechanically fixed ridge systems instead of mortar bedding.
3. How long does a dry ridge system last?
With proper installation, a dry ridge system can last 50 years or more, far exceeding the lifespan of mortar bedding.
4. Can I install a dry ridge system on an existing roof?
Yes, dry ridge systems can be retrofitted onto existing roofs as part of a roof upgrade or repair.
5. Is a dry ridge system more expensive than mortar bedding?
While the initial installation cost may be slightly higher, the long-term benefits of reduced maintenance and increased durability make it more cost-effective in the long run.
6. Does a dry ridge system improve roof ventilation?
Yes, one of the key benefits of a dry ridge system is its ability to enhance airflow, preventing condensation and damp issues in the roof space.
Final Thoughts
A dry ridge system is a modern, durable, and low-maintenance roofing solution that outperforms traditional mortar bedding in every aspect. With its compliance with UK building regulations and numerous benefits, homeowners and builders alike should opt for this advanced roofing method. Whether you’re constructing a new home or upgrading an existing roof, a dry ridge system is a smart investment that ensures long-lasting protection and performance.