100mm Concrete Blocks Dense 7.3N

100mm Concrete Blocks Dense 7.3N

When you’re building structural walls, foundations or multi-storey cavity construction, the last thing you need is doubt about your materials. These 100mm Concrete Blocks Dense 7.3N are manufactured for strength, stability and consistent on-site performance — giving you confidence from first course to final inspection.

With a compressive strength of 7.3N/mm², this solid dense concrete block is designed for load-bearing and structural applications where reliability matters. Whether you’re constructing inner or outer leaves of cavity walls over three storeys, installing block and beam floor infill, or building foundation walls below DPC, these 4-inch concrete blocks deliver the structural integrity your project depends on.

Built for Structural Confidence

A 7.3N rating is not just a number on a spec sheet. It means the block is engineered to withstand compressive loads in real-world conditions, from heavy masonry above to long-term structural pressure.

On site, that translates to fewer structural concerns, smoother inspections and reduced risk of costly rework. You lay each course knowing the block is designed to perform under load, not just look the part.

The dense concrete composition provides the weight and solidity required for structural builds, while the standard 440mm x 215mm x 100mm dimensions ensure compatibility with conventional blockwork layouts. Practical. Predictable. Dependable.

Suitable for Demanding Applications

These dense blocks are widely used across residential and commercial construction where structural reliability is essential.

Cavity Walls Over 3 Storeys

Suitable for both inner and outer leaves, these 7N blocks provide the compressive strength required for multi-storey builds. When structural performance cannot be compromised, 7.3N blockwork is a proven choice.

Foundation Walls and Below DPC

Working below damp proof course level demands durable materials. The solid dense construction makes these blocks suitable for below-ground use where long-term stability is critical.

Block and Beam Floor Infill

Designed to work effectively within block and beam flooring systems, these blocks provide the infill strength required to complete structural floor assemblies safely and efficiently.

If you are looking for strong, general-purpose 100mm blockwork that meets structural requirements without overcomplicating your specification, this is the practical solution.

Product Specifications

Length: 440mm

Height: 215mm

Thickness: 100mm

Compressive strength: 7.3N/mm²

Type: Solid dense concrete block

Sold individually

72 blocks per pallet

Please note that colour and texture may vary depending on availability in your delivery area. This variation does not affect performance or strength.

Bulk Orders and Project Pricing

For larger developments, we offer competitive pricing on high-volume orders. If you require 10 pallets or more, our team can provide a tailored quotation to support your project budget.

We regularly supply builders, contractors and developers who need consistent pallet quantities and clear delivery scheduling. Whether you’re ordering for a single build or managing phased construction, we can support reliable supply to keep your project moving.

Delivery and Site Support

Blocks are supplied individually, with 72 units per pallet for efficient handling and transport. We offer dependable delivery to the site, helping you avoid downtime caused by material delays.

If you are unsure how many 100mm dense blocks your project requires, contact our team for guidance before placing your order. Getting quantities right from the outset helps reduce waste and prevent last-minute shortages.

FAQs – 100mm Dense Concrete Blocks

What does 7.3N compressive strength mean?

It refers to the block’s ability to withstand compressive loads, making it suitable for structural and load-bearing applications in walls and foundations.

Are these blocks suitable for load-bearing walls?

With a 7.3N rating, they are ap