As little as 1% of the raw materials used in the production of H+H UK’s products are imported from overseas. Our production plants are located strategically to ensure that bulk raw materials and finished products for our customers have less distance to ravel. In this way, our products support the British economy as well as reducing the environmental impact of transporting raw materials and products.

Three of the most important raw materials used in the manufacturing process are pulverised fuel ash, aluminium powder and water.Pulverised fuel ash accounts for around 75-80% of the material used in the manufacture of Celcon aircrete. Pulverised Fuel Ash (PFA) is a by-product of coal-fired power stations. Most of this product would otherwise be sent for landfill.

Aluminium powder – Aircrete relies on an aerated structure for its lightweight and outstanding insulation properties. H+H UK uses recycled aluminium powder to produce the chemical reaction that creates the aerated structure. The Aircrete Innovation Since their introduction in the late 1950s, Aircrete products have won rapid acceptance throughout the building industry.Aircrete is produced by mixing pulverised fuel ash with water to create a slurry, which is pumped into a mixer where binders (cement and lime) are
added. Finally, a small amount of aluminium powder is added and the mix is poured.The addition of the aluminium creates a chemical reaction that produces heat and hydrogen. The hydrogen creates the noninterconnecting cellular structure of the material making the poured mix rise whilst the heat makes it harden. The resulting ‘green’ material is then cut to size and placed into an autoclave to be cured.The resulting product offers many benefits.As well as reducing the quantity of raw materials per m2 of product used, the aerated structure is also lightweight. As the cells are not interconnecting, the product offers excellent sound insulation, superb thermal

Water – a comprehensive water management system is in place at the company’s Pollington (Yorkshire) factory that utilises water from sustainable sources – rainwater and canal water – to be used together with wastewater from the manufacturing process. At H+H UK’s other factories wastewater from the
manufacturing process is also recycled.This significantly reduces the quantity of water that needs to be drawn from mains supplies