Cupa Pizarras Introduces 100-Year Guarantee on All Natural Slate Products

3 September 2026

Cupa Pizarras natural slate roof

Natural slate producer CUPA PIZARRAS is reinforcing its commitment to quality, traceability and long-term performance with the introduction of a 100-year guarantee on all its natural slate products for the UK market.

The guarantee reflects the company’s unique position as a quarry owner, meaning it can provide customers with direct quality assurances from the source of the material rather than through a third-party supplier or distributor.

Unlike many roofing products where warranties are issued by merchants or intermediaries, CUPA PIZARRAS controls every stage of the process, from geological assessment and extraction through to processing and quality control. The company owns and operates its quarries, employs its own team of geologists and has an in-depth understanding of the natural stone deposits from which its slates are produced.

This direct involvement throughout the supply chain provides specifiers, contractors and homeowners with confidence in both product quality and long-term performance.

100-Year Guarantee

The 100-year guarantee further strengthens the credentials of CUPA 12 and Heavy 3, two of the company’s premium natural slate products. Both products are supported by independently verified Environmental Product Declarations (EPDs), providing transparent environmental data to support informed specification decisions and helping projects meet increasingly demanding sustainability requirements.

Natural slate remains one of the most durable roofing materials available, with a proven lifespan that can exceed a century when correctly specified and installed. By combining independently verified environmental performance with a market-leading guarantee issued directly by the quarry owner, CUPA PIZARRAS is providing specifiers with a compelling solution for projects where longevity, sustainability and performance are paramount.

Steve Pearson, UK Country Director at CUPA PIZARRAS, said: “A guarantee is only as strong as the organisation standing behind it. As quarry owners, we have complete oversight of our products, from the geology of the deposit through to the finished slate. That level of control gives us the confidence to offer a 100-year guarantee on all UK products and provides customers with assurance that comes directly from the source.

“Combined with the independently verified environmental credentials of CUPA 12 and Heavy 3, the guarantee demonstrates our commitment to delivering some of the highest-performing and most sustainable natural slate solutions available to the UK market.”

See more information about the CUPA PIZARRAS 100-year guarantee and qualifying products.

>> Read more about CUPA PIZARRAS in the news

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