bristol mechanical engineering services

Above Ground Drainage

The requirement of a reliable and effective internal drainage system in today’s developed world is expected and taken for granted.

The general perception of drainage systems is to remove human waste from a building with the least disruption and impact on our daily lives as possible. This perception is not completely wrong; however, the other main objective of a drainage system is to prevent foul odour ingress into the built environment and thus prevent the possibility of bacterial infection occurring.

The design of modern building drainage and ventilation systems has been developing since the 19th century to improve both the efficiency of the drainage systems and mitigate the escape of foul air into habitable areas.

If you wish to discuss your own drainage project please call 0800 133 7039. We offer free quotations as standard.


Cosgrove & Drew have also invested heavily in other schemes to further the knowledge and skill set throughout the business, they have gained accreditations such as, ISO;9001, ISO;14001, Construction Line Gold Member, Safe Contractor and SMAS but to name a few.

Find out more about our accreditations HERE

Above Ground Drainage Enquiry

To discuss your Above Ground Drainage requirements or any other mechanical engineering projects please contact us via the enquiry form below or by phone - 0800 1337039
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mechanical services

Cant find what you’re looking for? Call our team on 0800 133 7039 to discuss your project

who we work with

Since we began back in 2014, we have had to build our client base from a name nobody had ever heard of to a position where we feel our client base and reputation within the industry is second to none.

The ability to work collaboratively with our clients to deliver bespoke and complex solutions sets us aside from our competitors; we treat our clients as we would our own employees – with respect, an honest approach, and while always striving for the best outcome.

We provide expert mechanical engineering services to the following sectors:


"Cosgrove & Drew have developed a strong and positive working relationship with JSW forged over the last 3 years via the successful delivery several projects ranging from fast turnaround small works projects (Circa £10k) to large residential projects consisting of central energy centre and multiple apartments (Circa £500k) Luke, Zac and the team have approached each project in a proactive and co-operative manor and have the expertise required overcome the various challenges that inevitably arise during the delivery of a construction project, the systems and procedures that Cosgrove & Drew employ provide confidence and reassurance for a robust and high-quality installation and their close and vigilant management of all aspects of their works ensures the JSW team of their reliability and maintains a collaborative working relationship."

Project Manager, JSW
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our partners

Our Quality Management system is powered by Sitemate using the Dashpivot platform. We use Dashpivot by Sitemate for everything from how we handle variations, RFI’s, COI’s,  Site Diaries, Q&A, Snags, Issue Management and much more. Dashpivot has allowed Cosgrove & Drew to grow as a business and the support from the team has been great.

Our Health & Safety and HR needs are all taken care of by the use of Citation an online platform with 24 hour support. We can raise Risk Assessments, Method Statement, Document H&S matters whilst covering all HR aspects such as contracts of employment, legal support, Holiday and absence monitoring. Citation have been great to work with and are always at the end of the phone.

Simpro is a key tool for Cosgrove & Drew as a business. Simpro allows us to project manage every project with absolute precision. We can track materials, labour, margains, invoice and report so we know where we are financially at any given time. Simpro are very easy to work with and happy to help when needed.