H+H Celcon Aircrete Block - 100mm - 7.3N
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B&Q - 100mm Celcon H+H High Strength Grade Plain Face 7.3N Block (X20 Blocks)
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£103.20
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HomebaseH+H Celcon 100mm High Strength Grade 7.3N Plain Face Aircrete Block 20 Pack
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£115.00
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Product Information
Full details
The H+H Celcon 100mm Aircrete Block is designed for builders, architects, and contractors who require a high-strength, thermally efficient solution for load-bearing walls in residential and commercial construction. These blocks provide structural integrity with a 7.3N/sqmm compressive strength, though their dense composition requires proper handling and specialized cutting tools to maintain clean edges during installation.
All features
| Model Part Number | 7.3N |
|---|---|
| Brand | H+H Celcon |
Extended Product Information
FAQs
Are these blocks suitable for external walling?
Yes, their aircrete composition offers good moisture resistance and thermal properties, making them suitable for external leaf construction when finished with appropriate render or cladding.
Can I use these for a basement wall?
While strong, you must verify the specific structural requirements and waterproofing needs for basement applications with a structural engineer.
What is the compressive strength of this block?
This specific variant has a compressive strength of 7.3N/sqmm.
Do I need special mortar for these blocks?
Standard cement mortar or thin-joint mortar is generally compatible; refer to your project specifications for structural mortar requirements.
How do I ensure the blocks stay level?
Use a long spirit level and string line every 2-3 courses to maintain alignment and ensure the precision of the factory-made blocks is maintained.
Troubleshooting
Difficulty achieving a clean cut
Ensure you are using a tungsten-carbide tipped masonry saw; avoid using blunt blades which can crush the aircrete material.
Cracking at block joints
Verify that the correct mortar mix ratio is being used and ensure the blocks are laid with a consistent 10mm bed.
Blocks absorbing too much moisture
Cover pallets with waterproof membranes during storage and avoid laying blocks in heavy rain or standing water.
Pros and Cons
Pros
- High structural load-bearing capacity
- Enhanced thermal insulation properties
- Precise dimensions for easier alignment
- Moisture-resistant for durability
- Suitable for multi-storey construction
Cons
- Requires professional cutting tools
- Heavier than standard lightweight blocks
- Can be prone to corner chipping if handled roughly
Setup, Compatibility & Care
To ensure optimal performance, blocks should be kept dry prior to installation. When cutting the 100mm blocks, use a tungsten-carbide tipped handsaw to prevent excessive dust and ensure a clean, sharp edge. Ensure that the mortar mix is appropriate for the strength grade of the blocks; for 7.3N blocks, a standard M4 mortar is typically sufficient for most wall types. During construction, always follow site safety protocols regarding manual handling, as these dense blocks are heavier than standard lightweight aggregate blocks. Regularly check for level and plumb at each course to take full advantage of their precision-moulded geometry.