Celcon Blocks

(6 Products)

Dubbed the 'Ultimate Masonry Product' by manufacturer H+H, Celcon Standard Grade Blocks offer a host of benefits such as excellent thermal insulation, airtightness and durability. These thermally-efficient building blocks offer all-round performance and are ideal for constructing both solid walls and partition walls, as well as for use as the inner and outer leaves in cavity walls.

Orders large enough to require a pallet will require a £20 refundable pallet charge to be paid per pallet. Our customer service team will reach out to you if this applies to your order. 

Find Out More About Our Types of Celcon Blocks
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Celcon blocks are a type of concrete masonry unit made of a mixture of sand, pulverised fuel ash (PFA), cement, lime and water. These components are blended into a slurry, with a small quantity of aluminium powder added to the mixture - the result is a strong and lightweight building material. 

For the sake of eradicating on-site confusion, Celcon aircrete blocks can be utilised in all manner of applications, namely in floor and wall applications - solid or cavity walls. 

With their exceptional thermal, acoustic, and load-bearing capabilities, Celcon blocks offer practical solutions that meet current Building Regulations, as well as being well-equipped to meet the Future Homes Standard, set to be implemented in 2025.

Here at Materials Market, we stock 100mm Celcon H+H Standard Grade Plain Face 3.6N Block (with a compressive strength of 3.6N) and 100mm Celcon H+H High Strength Grade Plain Face 7.3N Block (with a compressive strength of 7.3N). 

Celcon Blocks Applications 

The Standard Grade Celcon Block is a highly efficient block that is extremely versatile. It can be utilised as an infill for Beam and Block flooring systems below the DPC (damp proof course), as well as for walling applications above ground level.

Standard grade Celcon blocks are suitable for use in the following applications: 

  • Infill for beam and block floors 
  • Ideal for both Internal and external leaf of cavity walls
  • Solid walls
  • Separating walls (except Solar Grade) 
  • Partitions
  • Flanking walls
  • Multi storey buildings
  • Foundations/Below ground level (DPC) 

Celcon Block Standard Grade Key Features

  • Celcon standard aerated blocks are known for their exceptional strength and durability
  • High resistance to moisture, fire, and weather-related damage
  • BBA Certified 
  • Fire resistant (100mm walls, up to 4 hours, 2 hours if loadbearing)
  • Ideal for use in outdoor and indoor structures - external/internal leaf of cavity walls
  • Excellent thermal insulation properties
  • Made from materials that are abundant and readily available, and they can be recycled after use - environmentally-friendly building material

Frequently Asked Celcon Blocks Questions

What Does Aircrete Mean? 

Aircrete is one of the lightest forms of concrete with exceptional structural, thermal, sound, fire, and freeze/thaw properties. 

It has been used in the UK since the 1950s and is made of pulverised fuel ash (PFA), sand, cement, aluminium powder, lime, and water. 

What Are Mortar Perpends/Perps? 

The term "perpends" comes from old English and refers to the head or vertical mortar joints in bricks. Unlike horizontal bed joints, which are easier to fill, head joints require proper butting to prevent gaps in the wall system.

What Makes AAC Block wall Masonry More Cost-effective Than Brick Wall Masonry?

The standard AAC block is 9 times larger than traditional brick, resulting in fewer joints and reducing the amount of cement needed. 

AAC blocks are factory-made, providing a smoother finish and more precise specifications. Additionally, the larger size and lighter weight of AAC blocks make transportation and construction faster, while also reducing labour costs.

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