400mm Coping Stones

Our 400mm wide coping stones provide a wide, impressive finish ideal for substantial garden walls, raised patios and entrance features. Available in natural stone or porcelain with dressed or bullnosed edges, they suit a range of outdoor styles.

400mm coping stones offer a broad, solid surface suited to larger boundary walls, retaining walls and grand entrance pillars. With options in both natural stone and porcelain, they allow you to match either a traditional or contemporary design. Dressed-edge copings bring a more rustic, hand-worked look that fits older properties and softer landscape designs, while bullnosed profiles create a smoother, rounded edge for a cleaner, more refined finish. The generous width provides excellent wall protection and adds a strong, well-balanced top line to any build. Durable, weather-resistant and easy to maintain, 400mm copings are a reliable choice for projects needing a wider, visually striking wall top.

FAQs

What are wall coping stones used for?

Coping stones sit on top of a wall to give it a neat, finished look and protect the brickwork or stonework underneath. Without them, rain soaks into the wall and causes damage over time. They're commonly used on garden walls, boundary walls, parapet walls, raised beds, planters and entrance pillars - basically anywhere you've got an exposed wall top that needs capping off. They also come in different edge profiles, so they can suit anything from a traditional garden to a modern build.

What's the difference between dressed, bullnose and square edge coping

Dressed edge coping stones have a hand-cut, textured finish that gives a traditional, rustic look - these are natural stone options. Bullnose coping stones have smooth, rounded edges for a softer, more modern feel and are available in natural stone. Square edge copings have clean, sharp lines and come in our porcelain range, suiting contemporary designs. The right choice mostly comes down to the style you're going for and the material you prefer.

What sizes do your coping stones come in?

Our coping stones are available in a range of widths to suit different wall thicknesses.

Natural stone (dressed edge):

Widths: 150mm, 300mm, 400mm, 450mm
Lengths: 600mm, 900mm
Thicknesses: 20mm, 30mm, 50mm

Natural stone (bullnose):

Widths: 150mm, 275mm, 300mm, 350mm, 400mm, 450mm
Lengths: 600mm, 900mm, 1200mm
Thickness: 30mm

Porcelain (square edge):

400mm x 200mm x 50mm
600mm x 400mm x 50mm

Not every size is available in every stone, so check the individual product pages for exact options. If you're not sure which width you need, measure the top of your wall and allow for a slight overhang on each side - most people go about 25–40mm wider than the wall itself.

Are coping stones suitable for pillars and gateposts?

Yes. Our wall coping stones can also be used to cap decorative piers, pillars, or gateposts, providing a cohesive and weatherproof finish across your garden features.

Can I mix coping stones with porcelain or stone paving?

Absolutely. Our coping stones are designed to complement both porcelain and natural stone paving slabs, ensuring a seamless, professional finish.

How do you lay coping stones on a wall?

Whether you’re a landscaper or a confident DIYer, coping stones are relatively straightforward to install using a solid bed of mortar and appropriate adhesive for the material. Read our coping stone installation guide for more information.

Where can I find more information about delivery, returns, and ordering?

For questions about delivery times, costs, returns, or anything else about your order, head over to our main FAQs page, where we've covered all the details.

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