Class B Engineering Brick - Smooth Red - Perforated - 65mm - 200 Pack

These B&Q Class B engineering bricks are designed for applications requiring high structural stren...

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B&Q - Class B Engineering Brick Smooth Red Perforated 65mm (X200 Bricks)
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HomebaseSmooth Red 65mm Class B Perforated Brick 200 Pack
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Product Information

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The B&Q Class B Engineering Brick is an ideal choice for professional builders and DIY enthusiasts who require high structural integrity and durability for demanding masonry projects. These bricks are specifically engineered for heavy-duty applications such as loadbearing walls, foundations, and garden landscaping. While their perforated design makes them easier to handle and ensures a stronger mortar grip, users should note that the visual finish is intended for functional, robust construction rather than fine architectural facing.

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FAQs

Are these bricks suitable for below-ground use?

Yes, their Class B engineering rating and low water absorption make them excellent for below-ground applications like foundations.

Can I use these for a fireplace?

While strong, these are not firebricks. You should use specialized refractory materials for the internal lining of a fireplace.

Do the perforations affect the strength of the wall?

No, the bricks are engineered to maintain their structural integrity despite the perforations, which are designed specifically to improve bond strength.

Why do the perforation patterns look different?

Perforation patterns can vary during manufacturing, but these variations are within industry specifications and do not impact structural performance.

What is the standard height of these bricks?

These bricks are 65mm high, which matches standard UK metric brick dimensions.

Are they frost resistant?

Yes, Class B engineering bricks possess high frost resistance, making them durable for external landscaping in colder climates.

Troubleshooting

Mortar leaking through perforations

Use a slightly stiffer mortar mix and ensure your mortar bed is applied evenly to minimize seepage.

Bricks not aligning correctly

Check your starting course for level and squareness; even small discrepancies in the first row are magnified in engineering projects.

Difficulty in cutting for half-bricks

Use a dedicated masonry wet saw rather than a manual hammer and bolster to prevent cracking the brick structure.

Pros and Cons

Pros

  • High structural strength and durability
  • Excellent resistance to moisture ingress
  • Perforations allow for superior mortar keying
  • Consistent dimensions for uniform building courses
  • Versatile for both above and below ground construction

Cons

  • Perforation patterns may vary slightly between batches
  • Not intended for aesthetic-focused facing applications
  • Heavier than standard non-engineering clay bricks

Setup, Compatibility & Care

For optimal results, ensure the base is level and use a standard high-strength mortar mix suitable for loadbearing masonry. Because these bricks are perforated, ensure that the mortar consistency is thick enough to prevent excessive waste from falling through the holes. When cutting bricks to fit specific lengths, use a masonry saw with a diamond blade for a clean, professional edge. Keep the bricks dry until the moment of installation to ensure the best mortar adhesion. No special chemical sealing is required due to their inherent low water absorption properties, though standard masonry cleaning techniques apply if mortar splashes occur during construction.

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