Commercial Flat Roofing in Dublin, Built for the Long Term

A commercial flat roof is not truly flat, it carries a slight fall so rainwater runs to outlets rather than sitting on the surface. Instead of the slates or tiles of a pitched roof, it is waterproofed with a continuous covering, usually a single-ply membrane, an EPDM rubber, a built-up felt system or a liquid coating laid over insulation and a structural deck. That covering, and the way its edges and details are dressed, is what keeps the building dry.

The scale is what sets commercial work apart. A flat roof over an office, a retail unit or a warehouse can run to hundreds or thousands of square metres, often carrying rooflights, plant, ductwork and access routes that all have to be flashed and sealed. Every one of those penetrations is a potential leak point, so detailing matters as much as the covering itself. Poor commercial flat roofing in Dublin nearly always fails at the details first, not in the open field of the roof.

Because the roof serves a working building, how the work is carried out matters as much as the roof itself. We plan access, protect what is below, and schedule around your operations, so a roof over a live business gets renewed with the least possible disruption to the people using it.

The honest answer is that it depends on the system and the care it gets. A quality single-ply or EPDM roof, installed and detailed properly, will commonly give twenty-five to thirty years of service, and a good built-up felt system twenty or more. The manufacturer guarantees on modern systems reflect that, but a guarantee only holds where the roof has been maintained.

What shortens a commercial flat roof's life is rarely the covering giving out on its own. It is blocked outlets leaving water ponding, plant fitted without the flashing being made good, foot traffic wearing the surface, and small faults left until they let water into the insulation and deck. A roof checked once or twice a year, with the outlets cleared, will comfortably outlast one that is only looked at when it leaks.

That is why we pair every installation with the option of a maintenance plan. Our commercial roof maintenance keeps the small things from becoming big ones and protects both the roof and its guarantee.

Most commercial flat roof trouble comes down to a handful of recurring faults, and catching them early is the difference between a repair and a replacement. After a storm, our commercial storm damage checker helps you gauge how urgent any new damage is.

• Ponding water sitting in dips where the fall or the outlet has failed, slowly wearing the covering out
• Split or lifted seams and laps, the most common leak point on any flat roof
• Failed upstands and flashings where the roof meets a wall, parapet, rooflight or plant
• Blistering and cracking as an older covering ages and breaks down
• Blocked or undersized rainwater outlets backing water up onto the roof

Whether the answer is a targeted repair, a restoration coating or a full replacement, we tell you honestly which makes the best sense for the building and the budget, then carry it out around your operations.

Catching these early is the whole game on a commercial roof. A split seam found on a maintenance visit is a ten-minute fix; the same split found when it has soaked the insulation and dripped onto a desk is a far bigger and more disruptive job. This is why we pair installation with maintenance, and why we would always rather survey a roof before it fails than after.