65mm Blue Solid Class B Engineering Bricks (400 Pack) are exceptionally dense, high-strength clay bricks manufactured without perforations, providing maximum compressive strength and minimal water absorption for the most demanding structural and civil engineering projects.

• Heavy-Duty Foundations & Substructures: Ideal for constructing robust foundation walls, footings, and structural supports subjected to extreme loads and continuous ground moisture.

• Retaining Walls & Basements: Used extensively in earth-retaining structures, basement walls, and civil engineering works where resistance to lateral soil pressure and dampness is critical.

• Manholes, Culverts & Drainage Chambers: Widely specified for building heavy-duty underground drainage infrastructure, inspection chambers, and sewer systems due to their superior water resistance.

• Structural Piers & Columns: Employed for load-bearing piers, architectural columns, and boundary walls supporting heavy structural weights.

• Severe Weather & Frost-Prone Locations: Perfect for exposed locations subject to aggressive freeze-thaw cycles, coastal environments, or areas prone to severe weathering.

Available for collection from our Rugby branch or local delivery using our own fleet.

Delivery is kerbside and the final offloading position is always subject to safe access and the driver’s discretion.

Please tell us before delivery about:

• Narrow roads or restricted entrances
• Parked vehicles or limited turning space
• Overhead cables, trees or other obstructions
• Soft, sloping or unsuitable ground
• Any other access concerns

Enter your postcode on the product page to check your delivery area. We’ll confirm the delivery date after your order is placed.

What is the difference between solid and perforated engineering bricks?

Solid engineering bricks have no holes (perforations) through the body of the brick, giving them maximum mass and slightly higher overall compressive strength. Perforated bricks contain holes to assist with kiln firing and reduce weight, though both still meet the rigorous Class B structural standards.

Why choose solid engineering bricks over perforated ones?

Solid bricks are typically chosen when maximum load-bearing capacity is required, or when the brickwork will be left fully exposed and you want a completely solid, uninterrupted surface appearance without any visible holes on headers or exposed ends.

Are solid engineering bricks heavier to handle on site?

Yes. Because they contain no air pockets or perforations, solid bricks are noticeably heavier than their perforated counterparts, which can slightly increase manual handling fatigue during large construction projects.

Do solid engineering bricks absorb water?

Like all Class B engineering bricks, they have a very low water absorption rate of less than 7%. This makes them virtually impermeable to moisture and highly resistant to frost damage and dampness.

What is the compressive strength of a Class B solid engineering brick?

They feature a minimum compressive strength of 75 N/mm², meaning each square millimetre can withstand a load of 75 newtons before failing. This makes them among the strongest standard bricks available.

How many solid engineering bricks are needed per square metre?

Just like standard 65mm perforated bricks, you will need approximately 60 bricks per square metre for a single-skin wall (assuming a standard 10mm mortar joint).