Meet Offaly’s John Gallagher – Roofing & Extensions Expert

Back in 2003, a proud young John Gallagher received his FETAC qualification, marking the start of a career built on craftsmanship, determination, and trust.

Today, John is the driving force behind Roof Systems and Construction, an established SEAI contractor serving Offaly and surrounding counties.

Specialising in roofing, insulation, home extensions, and internal house renovations, John has become a trusted name for homeowners across the region—bringing both experience and personal dedication to every project.

With more than 15 years of running his own business, John has carved out a reputation for quality work and reliability. A skilled carpenter by trade, his expertise has evolved to cover large-scale projects such as warm roof construction, Lava 20 installations, and full kitchen/living space extensions.

What sets John apart is his hands-on approach. He takes the time to walk customers through every stage of their project—whether it’s electrical, plumbing, or finishing details—ensuring everything is completed to the highest standard. His favourite moment? Handing over a finished project and seeing the homeowner’s satisfaction.

One standout memory from his career was digging out a raft foundation and sewage system by hand. When a local architect jokingly remarked he should have craned a digger over the house instead, John simply laughed—it was just another example of his perseverance and willingness to do what it takes to get the job done.

What Homeowners Say:

“My front porch was done by John and it was done in a professional manner with good quality and a reasonable price. Would highly recommend John.” – Hugh Silke

“I cannot recommend John and his team from Roofsystems and Construction highly enough. We hired John to build a 15sqm extension for a remodelled kitchen, diner with living space…” – Ciara Doyle

Advice for Homeowners:

John always encourages homeowners to look at examples of a builder’s previous work and to maintain open communication throughout a project. This, he believes, is the key to a smooth process and a successful finish.

Why OnlineTradesmen?

Since joining in April 2023, John has used Onlinetradesmen.ie to connect with more homeowners looking for skilled and trustworthy tradespeople. It’s helped him grow his customer base and showcase his workmanship to a wider audience.

In His Own Words:

“The best advice I’d give anyone starting out is not to focus on money at the beginning of your apprenticeship. Learn the craft, work hard, and the rewards will come. For me, it’s all about finishing a job to the customer’s satisfaction—that’s what makes it worthwhile.”

Ready to start your next project?

Connect directly with John Gallagher and see why homeowners trust him for roofing, insulation, and home extensions across Offaly and beyond. With 24 verified homeowner reviews, you can be confident in choosing a reliable tradesman.

👉 View John’s full profile and reviews on Onlinetradesmen.ie

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