Thermalite Aircrete Block - 100mm - 7.3N - 60 Pack

These robust aircrete blocks are engineered for demanding load-bearing applications, blending stre...

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- 100mm Thermalite Aircrete 7.3N Hi-Strength 7 Block (X60 Blocks)

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HomebaseThermalite 100mm Hi‑Strength 7 7.3N Aircrete Block 60 Pack

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Product Information

Full details

The Thermalite Aircrete Block (100mm, 7.3N) is designed for professional builders and DIYers tackling structural projects that require a balance of load-bearing strength and thermal insulation. These blocks offer superior efficiency for cavity walls and partitions in both residential and commercial settings, though their weight requires careful manual handling during transport and installation.

All features

Model Part Number	7.3N
Brand	B&Q

Extended Product Information

FAQs

Can these blocks be used below the damp-proof course (DPC)?

Yes, their moisture-resistant properties make them suitable for use below the DPC in many residential foundations.

What is the compressive strength of these blocks?

These blocks are rated at 7.3N/mm2.

Are these blocks suitable for external wall leaves?

Yes, they are suitable for external cavity wall leaves provided they are finished with an appropriate facade material like brick, render, or stone.

Can I fix heavy cabinets to these blocks?

Yes, the 7.3N strength is sufficient for mounting fixtures, provided you use the correct masonry fixings designed for aerated concrete.

How many blocks are in a pack?

This product comes in a pack of 60 units.

Troubleshooting

Blocks absorbing too much mortar moisture

Lightly dampen the contact faces of the blocks if the environment is extremely dry, but avoid over-saturation.

Difficulty achieving a flat wall surface

Use a long spirit level every two courses to ensure horizontal and vertical alignment, adjusting the mortar bed as necessary.

Pros and Cons

Pros

Excellent thermal insulation properties
Reliable load-bearing capacity for residential structures
Consistent sizing facilitates faster bricklaying
Suitable for both interior and exterior structural walls

Cons

Heavier than lightweight insulation blocks
Requires proper cutting tools for clean edges
Potential for corner damage during rough handling

Setup, Compatibility & Care

For setup, ensure your foundation or sub-floor is level before laying the first course. Use standard masonry mortar suitable for aerated concrete blocks. When cutting these blocks, use a dedicated masonry saw or a heavy-duty tungsten-carbide tipped handsaw to ensure a precise edge. Store blocks on a dry, level surface off the ground and cover them with a waterproof tarp to keep them dry before installation. Do not use blocks that have sustained deep cracks or corner fractures, as these can compromise the structural load path.