Signature Black 20mm Slate Paving Slabs - Patio Kit

Signature Black Slate Paving Slabs – Patio Kit – 20mm offer a striking contemporary look that brings depth, character and elegance to any outdoor space. Crafted from premium natural slate, these slabs showcase a beautiful blend of dark grey and charcoal tones, creating a bold yet timeless aesthetic that suits both modern and traditional garden designs. The lightly riven surface provides an authentic texture formed naturally as the stone splits along its layers, giving each slab its own unique markings and personality. With a calibrated 20mm thickness, the slabs are sturdy, reliable and designed to stand up to the demands of the British climate. Their natural slip resistance makes them ideal for patios, pathways and seating areas, offering practicality without compromising on style. Because slate is a natural product, each piece carries subtle variations in colour and pattern, ensuring your finished space feels organic, characterful and truly unique. Colours appear richer and more intense when the stone is wet, while offering a more muted, elegant appearance when dry. It's this versatility and beauty that makes Signature Black Slate one of the most loved choices for stylish outdoor living.

Available Patio Kit Sizes

18.9m² Patio Kit 600×900 (16) 600×600 (16) 600×295 (16) 295×295 (12) Total: 60 pieces 15.25m² Patio Kit 600×900 (13) 600×600 (13) 600×295 (13) 295×295 (9) Total: 48 pieces 9.25m² Patio Kit 600×900 (8) 600×600 (8) 600×295 (8) 295×295 (4) Total: 28 pieces 5.8m² Patio Kit 600×900 (5) 600×600 (5) 600×295 (5) 295×295 (3) Total: 18 pieces

FAQs

Is Signature Black Slate suitable for all weather conditions?

Yes. Signature Black Slate is extremely durable and well-suited to the British climate. It performs well through rain, frost and varying temperatures, maintaining its strength and appearance for many years.

Will the colour of the slate fade over time?

Slate naturally retains its colouring very well. While shades may appear slightly different when wet versus dry, the stone’s deep grey and charcoal tones remain rich and consistent with proper care.

Is the slate slippery when wet?

No. The lightly riven surface provides natural slip resistance, making it safe for outdoor use. As with any outdoor paving, general caution is still recommended when the surface is wet.

Check out our full range of tiles & flooring.

Browse more outdoor flooring available online.

At JJ Building Materials, we're committed to supplying quality building products at competitive prices, backed by the service and expertise you'd expect from an established independent merchant. Whether you're a trade professional managing large-scale projects or a homeowner taking on a DIY renovation, we're here to help you find the right products for the job.

As part of the JJ Roofing Supplies Group, we build on decades of experience supplying construction materials across the UK. We've expanded beyond roofing to offer a growing range of building materials, including timber, insulation, landscaping products, plumbing supplies, flooring, doors, bricks, fencing, garden buildings and much more – all available to order online with nationwide delivery.

We work with many of the industry's leading manufacturers to bring you trusted products that meet the highest standards of quality and performance. Our team is passionate about providing excellent customer service, competitive pricing and a straightforward shopping experience from start to finish.

When you shop with JJ Building Materials, you can expect:

• Competitive prices on leading brands and quality products.
• Nationwide delivery across the UK
  
• A constantly expanding range of building and landscaping materials.
  
• Friendly, knowledgeable customer support.
  
• A trusted business backed by the JJ Roofing Supplies Group.
  

Every order is personally reviewed by our experienced team to ensure everything is correct before dispatch. We offer delivery from as little as the next working day on selected products, so please refer to the dark blue Estimated Delivery box above for the expected delivery timeframe for this item.

We work with trusted manufacturers and specialist delivery partners to ensure your order arrives safely and on time. You'll receive tracking details once your order has been dispatched, and if we need to confirm any delivery details, one of our team will contact you directly to keep everything running smoothly.