Natural slate is a fine-grained metamorphic stone which formed over millions of years under intense heat and pressure. Once quarried, it’s split along its natural grain to create thin, strong roofing slates with impressive consistency.

The true appeal of a slate roof lies in the versatility of the material. No two roofing slates are the same, which is part of the appeal. Nature adds subtle changes in colour and texture, giving roofs the sort of depth and character you just don’t get with manufactured alternatives. This makes slate easily adaptable to all architectural styles – everything from historic buildings to listed homes and modern new builds. On top of this, natural slate roofing offers strength, fire resistance, energy efficiency, and long-term value.

Here’s why slate is a popular choice for your building:

– Durability and lifespan

Perhaps one of the biggest reasons for slate’s popularity is its longevity. Perhaps one of the biggest reasons for slate’s popularity is its longevity. Well-specified natural slate roofing will last for over 100 years – often with little or no maintenance costs.

– Its aesthetic appeal

Natural slate roofing works just as well on an old rural cottage as it does on a large, brand new housing development. Its wide choice of colours, textures and sizes gives architects and designers the flexibility to respect local roofing traditions – while still delivering a high-quality finish that will last for a long time.

– Sustainability and environmental benefits

Natural slate is one of the most sustainable roofing materials you can use and specify. It barely requires any processing, doesn’t contain any harmful chemicals and it can be reused or recycled at the end of its life. And because it lasts so long, it avoids the environmental impact that comes with regular replacement.

– Performance and protection

Its density and low water absorption help keep roofs watertight. Natural slate roofing offers excellent protection against the elements. When it’s detailed and installed correctly, it offers reliable, long-lasting defence against wind-driven rain, frost and temperature changes. It’s quiet confidence rather than flashy performance.

Respecting regional roofing traditional

Roofing traditions vary widely across the UK. Each region has its own slate sizes and even fixing methods, many of which were originally shaped by locally sourced slate roofing materials that are no longer available.

That’s where SIGA Slate comes in.

We are the largest distributor of natural slate in the UK supplying a comprehensive range of natural slate products from British, United States, Brazilian and British quarries. Through our carefully selected products, we bridge the gap to ensure the slate you choose respects regional requirements of the project. For example, we are the only supplier of randomly diminishing Welsh slates suitable for use in Scotland.

Why choose natural slate roofing from SIGA?

SIGA Slate manages every step of the process, from the slate quarries right through to delivery on site. Such a high level of assistance and oversight means you will get consistency, traceability and slating techniques, giving you confidence in the product you’re specifying or installing.

Behind our nationwide branch network and UK specification team, we work directly with quarries to maintain quality and consistency during slate production. We’ve built particularly close relationships with our quarries, where on-site quality control teams at SIG Pizarras work full time to make sure every slate meets our standards.

Our slates are fully compliant with the Construction Product Regulations, CE marked and traceable back to source. And with our own distribution network, we ensure a reliable, consistent supply of natural slate roofing materials across the UK. We offer genuine warranties of up to 75 years that confirms the confidence we have in the quality and performance of our slate products.

Ready to get start on your next slate project?

Whether you’re working on a listed building, a new housing development, or even a refurbishment, our Product Finder will give you a hand in identifying the right slate for your project.

We also supply a range of reproduction stones and slates for heritage buildings and refurbishment projects where natural slate roofing materials can no longer be sourced. These include approved alternatives to natural Cotswold Stone, Collyweston and Swithland Slate.

If you need something different for your project, we also supply reproduction natural stone and fibre cement slates.