Class B Engineering Brick Smooth Blue Perforated 65mm
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Product Overview
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
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If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
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Core Products Core
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|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 ex. VAT | £20 ex. VAT |
| Over £300 ex. VAT | FREE |
Core Delivery charges apply only when all products in an order that have equivalents are accepted as such. If even one product cannot be substituted with an equivalent, the entire order will not qualify for Core Delivery charges.
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £15 ex. VAT |
| Over £100 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{invert_colors_off}} Low water absorption/ low water porosity
- {{fitness_center}} High compressive strength
- {{view_comfy}} Can be used above and below ground
- {{ac_unit}} Resilient to frost damage
Technical Specification
| Product: | Perforated |
|---|---|
| Length: | 215mm |
| Height: | 65mm |
| Sales Unit: | Each |
| Weight: | 3.01kg |
| Compressive Strength: | 75N/mm2 |
| Colour: | Blue |
| Depth: | 102.5mm |
Please note that Class B engineering bricks may feature perforations that vary in number and pattern. These variations do not affect the structural integrity or performance of the bricks and are within manufacturing tolerances.
Engineering bricks are typically used underground for foundations, as damp-proof courses or in wet environments. If you're after an aesthetic brick please check out our range of facing bricks.
What Is Class B Engineering Brick Smooth Blue Perforated 65mm?
Smooth Blue Perforated Class B Engineering Brick (65mm height x 215mm length x 102.5mm width) is a robust masonry unit specifically designed for structural applications where durability, high compressive strength, and resistance to harsh environmental conditions are critical.
Weighing approximately 3.01kg each, these bricks offer a reliable solution for a wide range of civil engineering and construction projects, particularly where robust performance below ground or in exposed locations is required.
Their distinctive smooth blue finish is a characteristic result of the specific clay composition and the controlled firing conditions in a reducing atmosphere (low oxygen).
Colour Variations: Although the typical colour is blue, slight variations in shade can occur depending on the specific firing conditions and the raw materials used. This is a normal characteristic of the manufacturing process and does not affect the performance or functionality of the brick.
Perforated Design
This brick features perforations (three vertical holes running through its bed). These perforations can offer several benefits:
- Reduced Weight: Making the individual brick slightly lighter than a solid equivalent, aiding manual handling.
- Improved Mortar Key: The perforations allow mortar to key into the brick more effectively, enhancing bond strength.
- Consistent Firing: Can contribute to more even firing in the kiln, leading to uniform strength.
- Thermal Properties: May offer very slight improvements in thermal resistance compared to an identical solid brick, though this is not their primary purpose.
Note: Despite perforations, these bricks are engineered to meet the 75N/mm² compressive strength requirement for Class B.
Applications
- Foundations & Substructures: Providing durable and strong masonry below Damp Proof Course (DPC) level, especially in challenging ground conditions.
- Damp Proof Course (DPC) Bricks: Used as the actual DPC course (typically two courses) due to their extremely low porosity, preventing rising damp.
- Retaining Walls: Constructing robust retaining walls that are exposed to earth pressure and moisture.
- Manholes, Inspection Chambers & Sewerage Works: Their strength, durability, and resistance to moisture and chemicals make them perfect for underground drainage and utility structures.
- Bridge Abutments, Piers & Civil Engineering Works: Where high load-bearing capacity and extreme durability are essential.
- External Plinths & Cappings: Creating durable and weather-resistant features at the base or top of walls.
Benefits
- High Compressive Strength (75N/mm² min.): Certified Class B performance, capable of supporting significant structural loads.
- Low Water Absorption (<7.0%): Offers excellent resistance to moisture penetration, contributing to durability and frost resistance.
- Exceptional Durability & Longevity: Vitrified clay construction ensures a very long service life, even in aggressive environments.
- Superior Frost Resistance: The low water absorption makes it highly resistant to damage from repeated freeze/thaw cycles.
- Good Chemical & Sulfate Resistance: Suitable for use in ground conditions where sulfates or other aggressive chemicals may be present (check specific soil conditions against brick specification if very aggressive).
- Perforated Design: Can aid mortar key and slightly reduce unit weight without compromising the specified structural strength.
- Consistent Quality: Manufactured under controlled conditions to meet performance standards.
- Versatile Application: Suitable for a wide range of demanding structural uses below and above ground.
