Flat roofs are notoriously difficult to maintain in the Irish climate. Between the heavy Atlantic rainfall and the rapid temperature shifts in Cork, traditional flat roofs often suffer from "ponding" water, blistered felt, and cracked seals.
At Hallmark Roofing, we don't just "patch" flat roofs; we engineer them to stay dry.
Whether you have a leaking kitchen extension, a damp garage, or a commercial unit, we provide advanced waterproofing systems that outperform old-fashioned felt.
With over 15 years of local experience, we specialize in identifying the structural weaknesses that cause flat roofs to fail, offering everything from emergency leak repairs to full, high-performance GRP (fibreglass) and EPDM (rubber) replacements.
Call (021) 202 1045 for a Free Flat Roof Assessment
The "Torch-on Felt" roofs of twenty years ago were prone to leaking at the seams. Today, we offer seamless technology that turns your flat roof into a single, impenetrable "tanking" system.
GRP Fibreglass Roofing: This is our most popular choice for Cork extensions. It is a cold-applied, seamless liquid resin that hardens into a tough, impact-resistant surface. It has no joints, meaning there are zero weak points for water to penetrate.
EPDM Rubber Roofing: Ideal for larger flat roofs, this incredibly durable rubber membrane is laid in large single sheets. It is UV resistant and stays flexible even in freezing temperatures, meaning it won't crack or "alligator" over time like old bitumen.
High-Performance Torch-on Systems: For those who prefer traditional methods, we use multi-layer, polyester-reinforced bitumen membranes that are vastly superior to standard felt, providing a robust and cost-effective seal.
Real people. Real workmanship. Real results.
If you can see standing water on your flat roof days after it has stopped raining, your roof has a drainage issue. This extra weight puts immense pressure on your home's structure and accelerates the degradation of the roofing material.
Our Flat Roof Repair Cork service includes a "fall" analysis.
We check if the timber decking has sagged over time.
If it has, we can install tapered insulation or firring strips to re-create a slight slope, ensuring that rainwater runs off into your gutters rather than sitting on your roof.
By fixing the slope, we fix the leak permanently.
While old felt roofs often failed after 10-12 years, a professionally installed GRP (Fibreglass) or EPDM (Rubber) roof can easily last 25 to 30 years with minimal maintenance.
No. While a small amount of "puddling" can occur, water should generally clear within 48 hours of rainfall. If it stays longer, it’s a sign of poor drainage or sagging timbers that need to be addressed to prevent future leaks.
Most domestic flat roofs are designed for occasional maintenance access only. However, if you want to use your roof as a balcony or terrace, we can install a heavy-duty GRP system with a non-slip finish specifically designed for foot traffic.
For permanent GRP or felt work, the surface needs to be dry. However, we carry emergency "wet-apply" waterproofing compounds that allow us to seal a leak during a storm to prevent internal damage until the weather clears for a permanent fix.
A simple patch repair is very affordable. If the timber decking underneath has rotted due to long-term neglect, the cost will increase. We provide free inspections to give you an accurate, no-surprise quote.
Flat roofing requires a higher level of precision than pitched roofing because water doesn't naturally run off it. We are fully insured specialists who understand the chemistry of modern resins and rubbers.
We ensure that your roof is not only watertight but also properly ventilated to prevent internal condensation and timber rot.
We serve all areas, including Cork City, Ballincollig, Douglas, Carrigaline, and Glanmire. When you choose Hallmark, you get a fixed-price quote and a guarantee that your flat roof will remain a "dry" part of your home for decades.
Contact us today at (021) 202 1045 for an honest, expert opinion on your flat roof.
Hallmark Roofing provides trusted, affordable roofing services across Cork City and County. With over 15 years of experience, our fully trained and insured team delivers high-quality roof repairs, new roofs, flat roofing solutions, guttering, chimney work and more.
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