SSQ: Is the slate you specify tough enough for Scotland?

Richard Cook, Technical Director of SSQ, argues that it takes slate of a particular calibre to stand up to the Scottish weather.

“Scotland’s a beautiful country, but its weather can be a force to be reckoned with. 

The North Atlantic delivers a constant barrage of wind and rain, with frequent gales whipping across the country. 

Winter thaws can be deceptive, followed by sudden plunges into freezing temperatures and even snowstorms. 

This harsh reality is why Scottish architecture has always prioritised practicality and resilience.

And that’s why it’s incorporated robust natural materials like thick slate roofs.

However – in recent decades, some of the slate that’s come to be used on roofs across Scotland is thinner than the material that was favoured historically.

If you’re looking for exceptional performance, ‘Heavy Grade’ slate – 6 – 8mm slate – isn’t the optimal choice.

At SSQ, we champion True Heavy Grade Slate, a superior product specifically designed to withstand the harshest Scottish weather – and crucially, much closer to the kind of slate installed in Scotland for centuries.

Superior durability

Why choose True Heavy Grade Slate? The short answer is – it’s thicker.

Ranging from 8 – 10mm and 10 – 12mm, it offers a significant advantage over the standard 6 – 8mm ‘Heavy Grade’ option. 

The difference might seem minor, but it translates to significant performance benefits.

It delivers superior durability – True Heavy Grade roofs are better able to endure generations of battering winds, heavy rain, and even frost damage, ensuring your project stands the test of time.

It also offers superior resistance to leaks, minimising maintenance concerns and safeguarding the integrity of the building beneath – particularly important in the case of listed properties.

And it provides authentic looks. Machine-cut thicker slates exhibit deeper and more pronounced dressed edges, replicating the authentic characteristics of traditional Scottish roofs.

Choosing True Heavy Grade Slate therefore ensures your project remains historically sensitive while boasting exceptional performance.

The best long-term value

While some roofing materials might appear cheaper initially, they often succumb to frequent repairs and replacements, leading to higher costs in the long run. 

True Heavy Grade Slate represents a long-term investment, saving you money and hassle over time.

At SSQ, we’re passionate about providing architects, housebuilders, and developers with the finest natural slate solutions. 

We understand the unique demands of Scottish weather and the importance of preserving architectural heritage.

And we have a range of outstanding natural materials available in True Heavy Grade that can suit the needs of your project.

Say goodbye to supply issues

Scotland’s history with natural slate stretches back centuries. 

Early records suggest slate was being extracted from Easdale Island as far back as the 16th century. Initially, it was likely used for local building projects. 

By the 1800s, however, the industry boomed, with quarries popping up across the Highlands and Islands. Ballachulish emerged as a major producer, renowned for its high-quality grey slate. 

These quarries supplied not just Scotland, but roofs across the UK. However, it’s since undergone a decline. 

By halfway through the twentieth century, most of its quarries were closed – making it increasingly difficult to source authentic Scottish slate. 

However, thankfully, there are a selection of superb alternatives available

SSQ’s Riverstone phyllite is harder and stronger than natural slate, making it an ideal choice for roofing projects around the world. 

It also boasts remarkable versatility, rendering it a great solution for a range of applications such as flooring, cladding, and even in the construction of swimming pools.

It’s been installed on dozens of roofs around Scotland, and perfectly complements the country’s rugged architecture.

In addition, we’re the exclusive UK distributor for Del Carmen – a Spanish quarry renowned for extracting high-quality slate from a single, consistent vein. 

This slate’s exceptional quality and unwavering consistency have seen it used in prestigious sites covered by English Heritage, and Heritage Scotland.

Speak to the experts

SSQ is your one-stop shop for all your slate and phyllite needs. We offer a range of exceptional products, expert advice, and unwavering commitment to quality. 

Contact us today to discuss your next project and discover how SSQ can help you create a beautiful and enduring structure.”

For more information, visit www.ssqgroup.com, email [email protected], or call 020 8038 2675.

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