SDG Team Members

With over 2000+ products for you to choose from, our team can help you find the best solution for your construction project.

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Our Story

Stronger, together.

SDG, were founded in 1990 by Seamus Duffy in 2020 we celebrated 30 years in business.

We work with manufacturers, contractors, engineers and designers supplying essential components that improve safety, enhance quality and drive efficiency at every stage of construction.

At SDG we are visionaries and trusted suppliers, and experts in construction solutions. We are planners, collaborators and designers; fixers, thinkers and expert problem solvers. We’re an end-to-end construction project partner, bespoke and best in class. By working closely with our customers; by adding value at every stage; by doing everything they expect and so much more, we share their success and become stronger, together.

Our Values


We are always listening to our people and are fully committed to their personal and professional development.



Our customer’s needs are at the heart of everything that we do.



We are accountable to and respectful of each other in all our actions.



To continually pursue knowledge and promote creativity and innovation for the benefit of all stakeholders.



We work as one team being flexible and having fun while doing it.

What could sdg do for you?

With our vast range of experience, we can help take your projects further.

On the BT ThermoPin, Taranto’s Design Manager commented: – “The BT ThermoPin was a simple for choice us. We can use less per SQM than market alternatives, meaning less material and subsequently less overall cost to our programme. The assistance with design for us is imperative, it frees us up to concentrate on other aspects of production whilst giving us assurances that our designs are more than sufficient. We are very happy with the innovative solutions that SDG continue to provide us with consistently”

SDG working with Todd Architects designed and supplied a unique jointing system of acoustic ceilings expertly installed by Castle Ceilings.

SDG are the supply partner of Bekaert Murfor Compact, which was used to reinforce the external masonry. Used by MG Construction Murfor Compact offered a fast, simple and economical way of reinforcing masonry walls.

SDG working alongside Doran Consulting from design stage right through to advising the construction team on site reference installation best practice for bridge bearings at this Belfast project.

LIV Student Accommodation with over 11 floors of Shearail® used to increase the shear resistance of a slab, and safety transfers the shear load from the slab to the column.

At SDG our knowledge of the impact of the correct acoustics in different environments grows it is no surprise that the education sector is one area where you can’t afford to be complacent.

Through the use of the BT turnbuckle on these LIDL store projects it has been possible to reduce the temporary bracing, increase safety and shorten the assembly time for the precast wall elements , it ticks all our the boxes. We are excited to implement it in our future projects.

SDG have always gone above and beyond for us. With SDG’s technical support our team have the ability to use the most effective and innovative solutions to improve quality, save time and perform more effectively.

I spoke to Ciaran Donnelly and after a few subsequent drawings emailed back and forth we agreed on the detail. SDG had the assembly on site within 3 days and saved us a lot of time on site with cutting and welding. We were able to lower the assembly into place in one piece with no concerns. I would most definitely engage in this service again.

Meet the Team

Striving to provide you the best customer care

Louise Skeath


Seamus Duffy


Oliver Phelan

Head of Sales

Meet the Experts
Ciaran Donnelly
Head of Technical

Ciaran jointed SDG in mid 2000 as a sales and marketing manager primarily tasked with developing the sales of all SDG products within the marketplace. He worked as an estimator and buyer in a construction supplies company after graduating from college in UoU Belfast but has worked solely within the industry from an early age gaining experience whilst working on construction project as a labourer throughout his teens and college years.

Ciaran is now the Technical Manager and oversees the development of all special product solution proposals along with new product developments within our industry sector. He has worked on numerous projects throughout his time from small one off private builds to the construction of large scale developments for blue chip companies. In the past decade Ciaran has spent a lot of time working on infrastructure projects and has a particular keen interest in bridge construction specifically around structural and sliding bearing applications.

+44 (0)28 37528 999
Darragh Loughran
Technical Specialist

Darragh jointed SDG in early 2016 after qualifying with a HND in Gen. Engineering. Initially leading development of a Liquid Polymer range, he progressed onto Technical Sales within the Construction and Civils sector.

Currently Darragh is working as a Technical Specialist within the Technical Department, focusing on the technical development of Structural Waterproofing, Concrete Repair, and Technical Innovation. One of Darragh’s most successful projects is the development of the Koster Waterproofing brand in Ireland. Darragh has been involved in many key projects in Ireland, including major road and water infrastructure projects.

Outside of work, Darragh is an avid Photographer with over 10 years shooting experience. Darragh typically spends his weekends on either the Mourne Mountains, or the Donegal Coastline.

+44 (0)28 37528 999

Want to become part of the SDG team?
See our current job opportunities.

2020 Product Catalogue

Product Catalogue

View our latest catalogue. For all queries please contact us directly on +44 (0)28 3752 8999 or

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