BUILDING ENVELOPE STRUCTURAL COMPONENTS


in  specifi cally warning about the riss associated with other alternatives. nderstanding the difference between authentic metamorphic slate and lower grade alternatives isnt ust technical pedantry its essential nowledge that could save you from costly callbacs and protect your most signifi cant investment.


GEOLOGY BEHIND PERFORMANCE Genuine panish slate, such as that uarried in Galicia, is a true metamorphic roc formed through millions of years of intense tectonic compression. his extraordinary geological process aligns minerals to create a strong metamorphic cleavage plane, giving the material its uniue combination of strength, fl exibility and weather resistance. he interlocing crystalline structure that results from this transformation is what enables panish slate to deliver its exceptional performance credentials and expected product lifespan of  years. ndeed, elsh and other  slates follow the same natural process.


WATER ABSORPTION & WEATHER RESILIENCE ne of the most signifi cant differences lies in water absorption rates. esting shows that uality panish slate has an absorption rate of ust ., while some other roofi ng materials can absorb nearly


twice as much. n Britains freee thaw climate, this distinction is critical. hen water freees inside roofi ng material it expands, causing cracs, surface fl aing and eventual structural failure. panish slates low absorption rate means it remains impervious to the elements, maintaining its structural integrity through countless seasonal cycles.


WORKABILITY & INSTALLATION or self-builders woring closely with their contractors, the practical advantages of genuine panish slate extend to the installation process itself. ts versatility maes contractors lives easier onsite, cutting cleanly and handling intricate details beautifully. his worability allows for a wide range of designs and architectural styles, from


traditional pitched roofs to contemporary applications including rainscreen cladding and even interior feature walls. he materials fl exibility means it can be easily cut onsite into various shapes and sies, accommodating features such as hips, valleys, gables and dormers with relative ease. hether youre creating an m-shaped roof, a gambrel design, or incorporating steep pitched and extended fl oating gables, natural panish slate can be adapted to mae your roof a standout design feature rather than simply a functional necessity. or self-builders, investing in panish slate protects your home and your long-term peace of mind. hile genuine panish tectonic slate may reuire a higher initial outlay than lower uality alternatives, the true cost of any roofi ng material must be calculated across its entire lifespan.


hen you consider a roof that will outlast multiple generations, reuire no replacement and maintain its aesthetic appeal throughout decades of service, choosing authentic panish slate isnt ust good practice its good business sense for the long term stewardship of your family home.


Steven Pearson is UK country director at CUPA PIZARRAS


Thermomur®


ICF from BEWI is a big hit


THE NATURAL CHOICE FOR ROOFING SLATE


SPANISH SLATES IN STOCK ESCO100 • ESC09 ESCO101 • ESC017 MERAYO • ESC0402


Undercloak available in a range of sizes


BRAZILIAN SLATES IN STOCK CATALAO GRAPHITE CATALAO GREY/GREEN


02380 200994 | sales@europeanslate.co.uk www.europeanslate.co.uk


30 SB_Spring_European Slate Company_QP.indd 1 05/03/2026 09:03


hen engineer ndrew Brash and his wife were looing to build a forever retirement home in the uffol village that they love, ndrew was immediately attracted to the elegance of an nsulating oncrete ormwor  solution. t was the thermal performance and simplicity that particularly appealed. e also lied the durability of  f we were going to build a house with our name on it, we wanted something that was going to be around for a long time, he says. ouses is a build of  s m on a .-acre plot, which was completed in ust  months, despite the large sie of the building, refl ecting the ease with which proects can be carried out using . he product selected was BEWIs hermomur®


 uper, which is designed to provide an outstanding


thermal performance with a -value of . m, and has full B and BB approval, while also enabling a fast and effi cient build. he cost performance euation was viewed as a ey benefi t, which could provide the thermal performance necessary to gain a Passivehouse rating. he house also easily achieved its airtightness target. rom a practical point of view, the ability to screw into the sides of the blocs and the way they all fi t together also maes for a more straightforward build than with other systems, while generating less waste. he fl exibility of the system meant that the team were able to deal with challenges as they arose on the ob


0870 600 3666 bewi.com/?lang=en-gb


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