SSQ Riverstone Heavy Roof Slate
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SSQ Riverstone Heavy
*** PLEASE SEE BUYER NOTES ***
***Please note, this product is a priced during a quotation and the price shown may not always be correct***
Riverstone is the diamond of natural roofing slate. SSQ’s signature slate is not actually slate, it is phyllite. Harder, denser and stronger than slate, phyllite is a perfect stone for any design challenge or artistic feature.
SSQ Riverstone Heavy is a premium-quality roofing slate produced exclusively by SSQ. Riverstone is a phyllite - a rock similar to slate, sharing its essential characteristics but surpassing its qualities - taken from SSQ’s own quarry in the San Luis region of Central Argentina.
In addition to passing SSQ’s own, rigorous quality control tests, SSQ Riverstone Heavy grey roofing slate has been tested in accordance with EN 12326, carries the UKCA marking and is classified as ‘W1-T1-S1’.
SSQ Riverstone has been accepted by Historic England and Historic Scotland as an alternative to indigenous slates for use on restoration projects or within conservation areas.
Riverstone roofing slate has a medium-grey colour and is similar to indigenous slate found in South-West England and Norway. The colour is totally natural and will not fade, even in the strongest sunlight or harshest environments.
SSQ Riverstone Heavy roofing slate is covered by a 100-year guarantee.
Buyer Notes
Please note that ordering 5% more tiles is recommended to allow for breakages especially if a job is on a tight timescale. Some tiles and slates can be broken in transit and can be refunded.
Why ssq exclusively natural slate?
For forty years, SSQ have been bringing the most outstanding slate and natural stone products to customers all around the globe.
By combining the finest natural materials, uncompromising quality standards, and decades of passion and expertise, we’ve become one of the world’s leading suppliers of stunning Spanish slate and Argentinian Phyllite.
SSQ’s uncompromising commitment to quality have seen our products become known and sought-after all around the world. Today, as well as their logistics office in North-West Spain and quarry in central Argentina, they’ve got teams in 22 countries, meaning that wherever you are, you don’t have to settle for anything less than SSQ quality.
Why is Natural Slate the Best Choice?
Natural slate is a fine-grained metamorphic rock, formed over millions of years under intense geological pressure. Unlike manufactured alternatives, every slate tile is a product of nature — unique in texture, colour, and character. This geological origin gives natural slate properties that simply cannot be replicated by synthetic or man-made materials.
It splits naturally into thin, flat sheets, making it ideally suited for roofing. The result is a material that is simultaneously robust and refined — capable of withstanding the harshest weather conditions while enhancing the visual appeal of any structure it covers.
SSQ Group is one of the world’s most trusted names in natural slate. With direct sourcing from Spain’s premier quarry regions, comprehensive technical support, and a commitment to consistent quality, we provide specifiers, merchants, and contractors with everything they need to deliver exceptional roofing projects.
SSQ supply the highest quality natural slates for a wide range of applications.
Our team is available to advise on product selection, project specification, and technical performance — ensuring that every SSQ Natural Spanish Slate project is set up for long-term success.
SSQ Lifetime Guarantee
Here at Ashbrook Roofing Supplies, we have paired up with SSQ Natural Slate to provide you with the right guarantees for your new slate roof.
We have guarantees ranging from 30 years to 100 years of protection for your new roof.
SSQ Natural Slate FAQ's
The Quality of Natural Slate
How do you know if you have low quality slate?
High quality natural slate is certified to BS EN 12326 – W1-T1-S1 standards. Signs of poor quality include brittleness and sounding dull or rattling when tapped. When grading and selecting natural slate, if it has a 'ring' to it when you tap it you can trust that it is high quality slate. Read More
How long does natural slate last?
An SSQ natural slate roof is designed to last over 100 years. Backed by guarantees of up to 100 years (depending on the slate selected), it offers one of the longest service lives of any roofing material available.
Does natural slate break easily?
A quality natural slate roof that's been professionally installed can last over a hundred years, with some natural slate roofs even outliving the building itself! It also resists cracks, scratches, breaks and chips. Del Carmen slate has one of the longest life expectancies of all natural Spanish slate, which is why we guarantee all Del Carmen roofs for up to 100 years. Read More
Does natural slate fade or darken over time?
Quality natural slate is the preferred option for restoring period properties as it will not fade over time. Our Riverstone, Del Carmen, and Matacouta slates will not fade or become discoloured even when exposed to the harshest environments.
Technical questions about ssq slate
Is natural slate slippery when wet?
Strong and durable, the impermeable surface of natural slate provides fantastic anti-slip qualities that’s ideal for a wide range of applications including bathrooms and shower rooms.
Is natural slate fire resistant?
Natural slate and phyllite products are 100% non-combustible, which means they will not burn if exposed to fire. Read More
Does natural slate expand?
Natural slate can withstand extreme temperatures, making it the most durable option for hearths, kitchens, and roofs. With an exceptional melting point of 2000 centigrade, high grade natural slate will not expand, contract, or warp. Read More
Does natural slate absorb heat?
Natural slate is one of the most heat resistant building materials available to-date. Read More
Is natural slate waterproof?
Thanks to a very low water absorption index, natural slate is renowned for its excellent waterproof qualities. Our Riverstone natural phyllite boasts exceptional durability and water absorption features.
Case Studies
Millbridge Primary School
Derbyshire’s NRA Roofing managed to achieve outstanding results fitting SSQ Del Carmen slate on Millbridge Primary School in Liversedge.
Cotton Tails, Bedfordshire
Cotton Tails is a prestigious £2.5 million private residential property, the finalist for the RCI Pitched Roofing Awards.
Tregenna, St Mawes
Overlooking the Percuil River, Tregenna occupies a spectacular yet demanding coastal location in St Mawes, Truro.
Have you ever seen a slate quarry?
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