Flat roofs · Dublin
Full Flat Roof Leak Repair with Mariseal 250 in Dublin
A leaking flat roof in Dublin needed more than a local patch. We prepared the full roof area and applied Mariseal 250 across the surface, edges and upstands to create a continuous waterproof membrane.

What needed attention
The existing flat roof was leaking, with widespread surface wear and standing water visible across parts of the covering during inspection. The customer needed a complete repair rather than another localised patch over one suspected leak point.
How we approached it
We prepared the full flat-roof area and detailed the perimeter edges, wall junctions and upstands before applying Mariseal 250, a hard-wearing liquid-applied polyurethane waterproofing membrane. The system was carried continuously across the main roof surface and its vulnerable junctions rather than being limited to a small patch.
The finished work
The completed roof has a continuous grey waterproofing membrane across the full surface, with the edges and upstands incorporated into the treatment. This full-roof approach renewed the waterproofing layer and delivered a complete repair instead of a temporary patch.
The job, in photographs
From first look to finishing details









Your roof, our next conversation
Planning similar work?
Tell us what needs attention. We’ll explain the next step and arrange a roof assessment.