100 years. Proven by nature, backed by CUPA
Natural slate is a stone formed over 500 million years, under intense pressure and heat. This process gives it qualities no other roofing material can match.
That natural strength translates into outstanding longevity on the roof. Slates laid centuries ago are still protecting homes, cathedrals and historic buildings today.
At CUPA PIZARRAS, we’re simply putting into writing what time has already proven: a 100-year manufacturer’s guarantee across all our natural slates.
How to request your manufacturer’s guarantee
Your guarantee must be requested by your roofing contractor, who will have the required documentation to complete the process. The certificate must be issued within one year of the distributor’s invoice date.
To complete the request, two documents are needed: the pallet identification (photographed or retained before installation) and a copy of the invoice, with clearly legible reference numbers.
Once approved, you will receive an official manufacturer’s guarantee certificate, valid for the full lifespan of your roof.
CUPA: confidence you can build on
As the world’s leading slate producer, with over 30 years’ presence in the UK, we work closely with roofing professionals every day through our teams on the ground.
We also support the industry with technical guidance, practical resources and expertise built on more than 130 years dedicated to natural slate.
When you install CUPA slate, you’re not just fitting a roofing material, you’re placing your trust in a manufacturer that knows its product and stands behind it with a 100-year guarantee.
Why 100 years? An unrivalled lifespan
The data simply confirms what nature has already proven. Slate is the only roofing material whose performance improves over time and the only one durable enough for a 100-year guarantee to truly make sense.
Maximum resistance
According to manufacturers’ own data, natural slate lasts at least twice as long as other roofing materials.
Unbeatable lifespan
Natural slate is also the only roofing material whose strength increases over time. While others deteriorate, slate only gets better with age.
* These results are based on laboratory testing. You can view the full reports here.
Do you have any questions? Our team of slate experts will be happy to answer them.
