Blocks

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Concrete blocks form the structural backbone of countless construction projects across Ireland, from load-bearing walls and foundations to garden boundaries and agricultural buildings. Choosing the right block ensures your build meets structural requirements, thermal performance standards, and long-term durability expectations.

Our Concrete Block Selection

McMahons stocks a comprehensive range of masonry units suited to every construction application:

Standard concrete blocks: versatile 440mm x 215mm units ideal for internal partitions, external walls, and below-ground work where strength and stability matter most.
Hollow blocks: lightweight options that reduce material handling time on site while providing excellent core-fill capability for reinforced structures.
Solid dense units: high-compressive-strength options for foundations, retaining walls, and load-bearing applications requiring maximum structural integrity.
Thermal blocks: insulating units that help achieve Part L Building Regulation compliance, reducing cold bridging at wall junctions and openings.
Fair-faced blocks: smooth or textured finishes for exposed interior walls where plastering isn't required, saving time and labour costs.

Complete your masonry project with our full Bricks & Blocks range, including Bricks for decorative façades and Damp Proof Course materials for moisture protection.

Consider wall thickness requirements, load specifications, and thermal performance targets when selecting your masonry units. For cavity wall construction, factor in insulation thickness and tie spacing. Our trade counter staff can advise on quantities and specifications for your particular project.

Why Choose McMahons for Your Masonry Supplies?

With nearly two centuries serving Irish builders, McMahons understands that reliable block supply keeps your project on schedule. We maintain strong relationships with leading manufacturers, ensuring consistent stock availability and competitive pricing on bulk orders. Our experienced team can help calculate quantities for complex builds and arrange delivery direct to site: view our delivery options to see how we can support your next project.