Textured Concrete Slabs - 450x450mm - Dark Grey - Pack Of 20

Textured concrete paving slabs in dark grey, supplied as a pack of 20 covering approximately 4.05 ...

Best current price£315.00from B&Q

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B&Q - 20 X Textured Concrete Slabs 450X450mm Dark GreyPack Of 204.05 M² Coverage
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£315.00
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The Range20 Textured Concrete Slabs 450 x 450 mm Dark Grey - 4.05 m² - Dark Grey
Free delivery in 1–3 days
£315.00
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Product Information

Full details

Designed for homeowners and landscapers seeking a durable, contemporary finish, these textured concrete slabs are an ideal solution for patios, garden paths, and outdoor utility areas. The primary benefit is their enhanced underfoot safety provided by the textured surface, though users should be aware that the 450x450mm sizing requires precise planning and a solid foundation to prevent uneven settling over time.

All features

Model Part Number1391839
BrandThe Range

Extended Product Information

FAQs

Can these slabs be used for a driveway?

These slabs are primarily designed for patios and pathways; they may crack if used for heavy vehicle traffic.

What is the thickness of each slab?

While thickness can vary slightly by batch, they are engineered for standard patio loads, typically measuring around 35-40mm.

Are these slabs frost-resistant?

Yes, they are manufactured for outdoor durability and are resistant to typical weather cycles including frost.

Do I need to seal the slabs after laying?

Sealing is optional but recommended if you want to protect the color and make the textured surface easier to clean.

How do I cut these slabs for edges?

Use an angle grinder equipped with a diamond-tipped masonry blade. Always wear appropriate safety gear including goggles and a dust mask.

Troubleshooting

Slabs are rocking after installation

The sub-base is likely uneven. Carefully lift the slab and adjust the mortar or sand bed underneath until it sits flush and level.

White powdery residue (efflorescence) appears on surface

This is a natural mineral deposit in concrete. It typically fades over time with exposure to rain or can be brushed away with a dry stiff brush.

Difficulty keeping the texture clean

Use a specialized concrete sealer to protect the surface from stains and make debris easier to sweep away.

Pros and Cons

Pros

  • Improved grip due to textured finish
  • Modern dark grey color fits most garden designs
  • High durability and weather resistance
  • Covers a substantial 4.05m² per pack

Cons

  • Heavy to transport and position
  • Requires a perfectly level sub-base to avoid rocking
  • Dark color may show dust and light-colored debris more clearly than lighter shades

Setup, Compatibility & Care

To install, ensure your ground is excavated to a depth suitable for your sub-base (typically 100-150mm of hardcore topped with 30-50mm of sharp sand). Lay the slabs with a consistent gap to allow for drainage. Periodically sweep the slabs with a soft-bristled broom to remove loose dirt. If deep cleaning is required, use a mild detergent and a pressure washer on a low-pressure setting to avoid damaging the concrete finish. Avoid using harsh acidic cleaners, as these can alter the color and integrity of the cement.

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