When you look up at your roof, you probably notice the tiles that run along the very top peak. These are your ridge tiles, and how they are attached can be the difference between a secure home and a costly repair bill. In Northern Ireland, where the weather can turn from a light drizzle to a gale-force storm in minutes, choosing the right roofing system is critical.
At Advanced Construction & Roofing, we have spent over 25 years repairing and replacing roofs across Belfast, Bangor, and Newtownards. We have seen firsthand how traditional mortar bedding fails under the pressure of our local climate. That is why we are here to settle the debate: Dry Ridge vs. Mortar.
Request your professional roof survey today to find out if your ridge tiles are secure. Call our expert team for honest, local advice.
What Is Traditional Mortar Bedding?
For decades, mortar was the only way to secure ridge tiles. It involves using a mixture of sand and cement to "stick" the tiles to the roof. While it has been the standard for a long time, it is far from perfect: especially in the modern world.
Mortar is a porous material. This means it absorbs water. In Northern Ireland, we face a constant cycle of rain followed by freezing temperatures. When water gets into the mortar and freezes, it expands, causing the mortar to crack and crumble. This is known as the freeze-thaw cycle, and it is the primary reason why mortar ridges fail.
Check your roof for these signs of mortar failure:
- Visible cracks in the cement between ridge tiles.
- Small chunks of mortar lying in your gutters.
- Moss growing heavily along the ridge line.
- Loose or "rattling" ridge tiles during high winds.
If you see any of these signs, contact Advanced Construction & Roofing immediately. We provide detailed, professional roof surveys to identify these issues before they lead to interior leaks.

What Is a Dry Ridge System?
A dry ridge system is the modern, high-performance alternative to mortar. Instead of relying on a sand-and-cement mix that can crack and fail, a dry ridge system uses mechanical fixings: screws, clips, and waterproof unions: to lock your ridge tiles firmly in place.
Underneath the tiles, a ventilated ridge roll is installed. This creates a waterproof seal while allowing the roof to "breathe." It is a "dry" system because no wet mortar is required during the installation process.
Request a free, no-obligation quote to upgrade your home to a maintenance-free dry ridge system. Call us today to learn more about our high-quality materials.
Why Dry Ridge Wins in Northern Ireland (5 Key Benefits)
1. Superior Storm Resistance
Northern Ireland is famous for its wind. From coastal gales in Bangor to high winds in the hills of Newtownards, your roof takes a beating. Mortar can become brittle and lose its grip over time, making it easy for a strong gust to blow a ridge tile clean off.
A dry ridge system is mechanically fixed. Every tile is screwed down and secured with stainless steel or plastic clips. It is designed to stay put, even in the harshest storms. We recommend dry ridge for 95% of our installations because it offers the ultimate peace of mind.
2. Essential Roof Ventilation
Damp and condensation are major issues in Northern Ireland’s humid climate. Traditional mortar completely seals the ridge, trapping moist air inside your attic. This can lead to timber rot, mouldy insulation, and structural damage.
Dry ridge systems provide built-in ventilation. They allow air to flow out through the ridge while keeping the rain out. This constant airflow keeps your roof timbers dry and healthy. Call our team to discuss how a ventilated ridge can protect your home's structure.
3. Zero Maintenance for Decades
Mortar requires regular "re-pointing": the process of scraping out old cement and putting in new. In our weather, you might find yourself needing repairs every 3 to 5 years.
Dry ridge is effectively maintenance-free. There is no mortar to crack, no cement to erode, and no bond to break. Once it is installed by our experts, you can forget about it. Contact us today to invest in a long-term solution that saves you money.
4. Reliable Installation in Any Weather
You cannot install mortar in the rain or when it is too cold, as the cement won't set properly. Finding a perfect "dry window" in Northern Ireland can be a nightmare.
Dry ridge can be installed in almost any weather condition. Because we don't use wet materials, we can secure your roof even if the clouds are grey. This means faster turnaround times for your repairs. Request your roof survey now and get your home protected sooner.
5. Insurance-Backed Guarantees
Many insurance companies now prefer or even require dry ridge systems for new builds and major repairs because of their reliability. At Advanced Construction & Roofing, all our full roof replacements and dry ridge installations come with insurance-backed guarantees.
We stand by our workmanship. We pride ourselves on honest, expert advice and we only recommend work that is genuinely required for your property.

Is Your Roof Ready for Next Winter?
Don't wait for a storm to find out that your mortar has failed. A single loose ridge tile can lead to significant water damage, rotting your roof joists and damaging your ceilings.
Our professional roofing surveys are designed to give you a clear, honest picture of your roof's health. We serve customers throughout Belfast, Bangor, and Newtownards, providing detailed reports that show you exactly what needs to be done: and what doesn't.
"Advanced Construction & Roofing provided a fantastic service. They replaced my old, crumbling mortar ridge with a new dry ridge system. The team was professional, clean, and most importantly, my roof survived the last big storm without a single issue. Highly recommended!" : David M., Belfast
Contact Advanced Construction & Roofing for a service built on 25 years of local experience. We provide high-quality workmanship and use only the best materials to ensure your home stays dry.
Frequently Asked Questions
Is dry ridge more expensive than mortar?
The upfront cost of materials for a dry ridge system is slightly higher than a bag of sand and cement. However, when you factor in the reduced labour time and the fact that you won't need to pay for repairs every few years, dry ridge is significantly cheaper in the long run.
Can I change my mortar ridge to a dry ridge?
Yes! We specialise in converting old mortar ridges to modern dry ridge systems. We remove the old, failing mortar, clean the tiles, and install the new mechanical fixings. Call us for a free quote on your ridge conversion.
Does it look different?
Modern dry ridge systems are designed to be sleek and low-profile. They match almost all slate and tile types found in Northern Ireland. Most homeowners prefer the clean, uniform look of a dry ridge system over the messy appearance of old mortar.
Take Action Today
Your roof is the most important part of your home’s defence against the elements. Why rely on outdated technology that is prone to failure?
Request your professional roof survey.
Call Advanced Construction & Roofing.
Secure your home for the future.
With no call-out charges and free, no-obligation quotes, there is no reason to delay. Whether you need a small repair in Newtownards or a full roof replacement in Belfast, we are the experts you can trust.
Contact us today at www.adv-group.co.uk and let’s get your roof storm-ready.










