Thomas Armstrong - Divisions


Environmental & Sustainability

Environmental & Sustainability

We have an ongoing programme of installing Environmental Management Systems in all our manufacturing facilities in line with the requirments of ISO 14001:2004. This process is well underway and we achieved our first full certification for the Airtec aeated block process in March 2009. Furthermore, we are continually looking for ways of eliminating waste in our facilities by streamlining processes, installing energy efficient equipment and minimising the needless loss of heat which can be used to cure the blocks.
Thomas Armstrong (Concrete Blocks) Ltd is committed to preventing pollution and to conducting its operational and business activities in an environmentally responsible manner.

We are full members of British Precast's Sustainability Charter scheme. This requires all members to be independantly audited each year at each manufacturing site. Detailed evidence is then gathered and analysed to determine performance in all required areas including utilities usages, energy-saving measures, employee welfare, training, responsible sourcing of raw materials. 

We are adopting the highly regarded UK Responsible Sourcing standard BES 6001 at our sites.

In July 2017, our new Stocks Bros Ltd plant in Leeds achieved the EXCELLENT status. Only the 2nd block plant to have ever achieved this after our Airtec block plant gained this in August 2015.

As well as ensuring that our products are sustainable and the constituent materials are responsibly sourced, we are continually monitoring our generation of  greenhouse gases and look for ways to further reduce this.  


Sustainability &
Responsible Sourcing

Sustainability Report 2018

BES 6001 Responsible Sourcing 'EXCELLENT' Airtec blocks

BES 6001 Responsible Sourcing 'EXCELLENT' Stocks Blocks Ltd

ISO 14001
Environmental Management


Environmental Product Declaration (EPD)
Aerated concrete blocks

Environmental Product Declaration (EPD)
Concrete Blocks






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