Sustainable Manufacture

Up to 80% of the raw materials used in the manufacture of Celcon Blocks are recycled products in some form. H+H is committed to making a positive contribution to the sustainable manufacture of environmentally acceptable products that contribute to energy efficient and long-lasting homes and communities.

The nature of our aircrete blocks reflects this commitment. Up to 80% of the raw materials used in the manufacture of Celcon Blocks are recycled products in some form.  The primary ingredient is Pulverised Fuel Ash (PFA) which is a by-product of coal fired power stations which would otherwise be sent to landfill. 

Our Celcon Blocks are rated “Very Good” in the BRE’s Green Guide to Specification and easily exceed the required 60 year building life expectation in this Guide.

We ensure that 99% of all raw materials are sourced from UK suppliers, reducing the need for transportation, and our manufacturing sites are strategically placed geographically close to raw material suppliers and convenient for quick and effective deliveries to all parts of the country.

H+H has also focused close attention on the energy efficiency of our production processes.  We were the first aircrete manufacturer to be awarded the Carbon Trust Standard, and the first company to be awarded a ‘very good’ rating in BES 6001:2008 Standard for the Responsible Sourcing of Construction Products. 

When designing our newest plant (Pollington 2) environmental considerations were applied to every aspect.  This included the installation of a combined heat and power plant and an advanced rainwater management system. 

All water used at the site comes from either a local canal or a lagoon that collects rainwater from the whole site.  At H+H’s other factories, waste water from the manufacturing process is also recycled, significantly reducing the quantity of water that needs to be drawn from mains supplies.

Just as significant as our own manufacturing is the role our products play in the construction of sustainable buildings. 

Our philosophy is very much one of “fabric first” – that energy efficiency should be built into the fabric of a house so that it remains effective for the lifetime of the building.  We believe that this is a far better option than relying on technologies that are either unproven over the longer term or rely on the behaviour of the building occupants for their effect.