*** Covid-19 Update ***

Stonbury are immensely proud to be supporting our clients across the UK at such a crucial time and have been designated as 'key workers' by DEFRA and the UK water utility companies. Our teams are working tirelessly to help secure and maintain drinking water supplies, ensuring clean and safe drinking water is provided without interruption to critical services such as our hospitals as well as the general public. Now more than ever, the safety and wellbeing of our staff is of the utmost importance and we have adapted our safe working practices to ensure social distancing precautions are in place and that the correct hygiene practices are being followed. Making safety is our priority, and we endeavour to make sure everyone at Stonbury goes home safe to their family.

// Aqueduct Conduit Bridges Waterproofing

Stonbury Ltd carried out an innovative internal waterproofing system to a total of eleven conduit bridges bringing pre-chlorinated water from Lake Thirlmere to Bolton for distribution to the Manchester area.

Access to the bridges was sometimes so difficult as to require helicopter assistance, whilst for all others four wheel drive all terrain vehicles were used. The limited outage period combined with problems of ground water ingress and foul weather conditions meant that orthodox waterproofing systems could not be used.

Relying on previous experience gained with similar but smaller schemes for other Water Companies, Stonbury were able to provide a successful alternative utilising prefabricated DWI Approved Polypropylene Sheet Membrane sections, site welded together.

A specially designed stainless steel fixing and termination system was employed, to ensure the total integrity of the system and a geotextile backing fleece ensured that no damage was caused in service from the variable concrete surfaces of the aqueduct.

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