Concrete Blocks | Building Supplies
Concrete blocks are a core building material for structural and non-structural masonry, including load-bearing walls, internal partitions, foundations and landscaping applications where the selected product specification is suitable.
Dense Concrete Blocks
Our range includes dense concrete blocks in useful UK building sizes. Dense blocks are commonly chosen where strength, mass and durability are important. Always compare the block thickness, declared compressive strength and project specification before ordering.
Hollow Concrete Blocks
hollow concrete blocks use internal voids to reduce material and weight compared with a fully solid block of similar dimensions. They are used in suitable structural and non-structural applications according to the product and wall design.
100mm, 140mm & 215mm Concrete Blocks
Block width affects the wall build-up and should be selected from the drawings or specification. Our live range includes 100mm and 140mm dense blocks and 215mm hollow blocks. Do not substitute one width or block type for another without checking structural and construction requirements.
7.3N Concrete Blocks
Products in the current BLOC range carry a 7.3N strength designation. This relates to declared compressive strength, but the correct block should still be confirmed against the project specification and wall design.
For lighter aircrete alternatives, browse aerated blocks and Thermalite blocks, or explore the complete bricks and blocks range.
Concrete Blocks FAQs
What are concrete blocks used for?
Concrete blocks are used in a wide range of masonry applications. Suitability depends on the block type, strength, dimensions and the design of the wall.
What is the difference between dense and hollow concrete blocks?
Dense blocks have a solid, high-mass construction, while hollow blocks contain internal voids. They have different handling, weight and performance characteristics.
What does 7.3N mean on a concrete block?
It is a compressive-strength designation. The required strength should be determined from the project specification or structural design.
Concrete Blocks Guides
Use our guides to compare block types and sizes, understand strength ratings and estimate quantities for UK building projects.
