Medium Density Solid Concrete Block 7.2N 440 x 215 x 100mm
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Product Details
Available in dense (7.3N), medium-density (7.2N), and aerated (3.6N/7.2N) variants, these 100mm blocks serve different structural needs. Dense blocks form sturdy foundations, while aerated "thermalite" blocks provide insulation in internal partitions. Often called breeze blocks regardless of density, their numbering indicates compressive strength in Newtons per mm²
As of August 2026, PriceNailer data confirms that the cheapest price for Medium Density Solid Concrete Block 7.2N 440 x 215 x 100mm is £1.98 from BuilderDepot across 6 suppliers. Prices have decreased by 2.9% over the last 19 months.
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Frequently Asked Questions
What does 7.2N mean on concrete blocks?
The 7.2N rating indicates the compressive strength of the block, meaning it can withstand 7.2 Newtons of force per square millimetre. This medium-density rating makes it suitable for general construction work above ground level but not for heavy structural loads.
How many 440 x 215 x 100mm blocks do I need per square metre?
You'll need approximately 10.6 blocks per square metre of wall. This calculation is based on the block face dimensions of 440mm x 215mm, allowing for standard 10mm mortar joints between blocks.
Can I use 7.2N medium density blocks for load-bearing walls?
Yes, 7.2N blocks are suitable for most internal load-bearing walls in domestic construction. However, for foundations or heavily loaded structural elements, you should consider denser blocks with higher compressive strength ratings.
What's the difference between medium density and dense concrete blocks?
Medium density blocks (7.2N) are lighter and easier to handle than dense blocks (7.3N), making them ideal for general construction above ground. Dense blocks offer slightly higher strength and are typically used for foundations and heavy-duty applications.
Do I need special tools to cut 100mm concrete blocks?
Yes, you'll need a diamond blade angle grinder or block splitter to cut these blocks cleanly. A standard masonry chisel and hammer can work for occasional cuts, but power tools give cleaner, more precise results for multiple blocks.