Welcome to ISTL Engineering!
ISTL are South Wales’ premier M&E design and build contractors. Please take some time to explore our site and find out about our latest projects, personnel, experience and expertise.

At ISTL we pride ourselves in providing the most comprehensive building service package in the South Wales market and beyond; being able to design, source and install a broad spectrum of building services to the very highest standards, for the most discerning clients.

ISTL’s success has been built on its employees; in turn they are encouraged to further their own development by increasing their knowledge and expertise as well as their responsibilities, forming an integral part of the ISTL process by taking real ownership of, and pride in, their work. They are further supported by an excellent Health and Safety department boasting a truly enviable record in a dangerous and fast moving industry.

Please visit our ‘Contact Us’ section if you would like to get in touch.
Latest Projects
Leadbitter Construction
Castlegate Extra Care Facility

40 assisted living apartments and communal services



Scientific Lesser
Milton Park

Laboratories



Bellway Homes
Quayside

74 luxury apartments



Latest News
2011 order book is quickly filling up
25th Jun 2010

ISTL are in the process of securing a number of contracts for the 2010-2011 financial year with new and existing clients. More to follow...




Building Confidence at ISTL
28th May 2010

After a two-day Level 5 Building Confidence audit Achilles Assessment Services confirm that ISTL have fulfilled their criteria and are cleared to work for the UK’s premier building contractors.





ISTL to go global
30th Apr 2010

ISTL are proud to be part of International Business Wales’ trade visit to Hong Kong in May 2010, seeking to expand our horizons by seeking out new contacts in all facets of building services