No Full Roof Replacement Needed
The vast majority of flat roofs across the region can be restored and waterproofed over the existing covering, dramatically extending the roof's service life at a fraction of the replacement cost.
Professional flat roof repair and waterproofing services across Limerick city and county. Our proven liquid-applied membrane systems eliminate leaks, restore ageing roofs, and provide lasting protection with manufacturer warranties of up to 25 years.
Limerick's position on the Shannon Estuary brings persistent rainfall, high humidity, and mild but wet conditions year-round that place constant demands on flat roof structures. Without specialist waterproofing, even well-maintained flat roofs can develop leaks and progressive water damage.
Property owners across the region regularly discover ponding water on flat roofs and are understandably concerned about the consequences. With traditional roofing materials such as felt or bitumen, that concern is well-placed — conventional systems were never designed to endure prolonged water exposure.
As the video demonstrates, modern liquid-applied waterproofing systems address this problem directly. These specialist membranes are specifically formulated to withstand permanent ponding water without degrading, lifting, or losing their protective seal.
Our flat roof waterproofing systems:
At Dublin Protective Coatings, we deliver comprehensive flat roof leak repair, sealing, and waterproofing for residential and commercial properties across Limerick. From period home extensions in the city centre and residential estates in Raheen and Dooradoyle to commercial premises at the National Technology Park, we provide lasting, cost-effective roof protection — without the expense and disruption of a complete roof replacement. Learn more about our team and our commitment to quality workmanship.
We provide professional flat roof repair and waterproofing throughout Limerick using advanced liquid-applied membrane technology engineered to restore, reinforce, and extend the working life of your existing roof.
Our systems are ideally suited for:
As the video illustrates, the vast majority of flat roof problems can be resolved without tearing off the existing roof. Most of the local properties we treat have their roofs reconditioned and reinforced using liquid waterproofing membranes combined with fibreglass reinforcement matting. We also offer specialist asbestos roof waterproofing and polyurea roof coating systems for demanding applications.
This approach enables us to:
Whether your Limerick property has an active leak, visible weather damage, or you simply want to protect against future problems, we develop a tailored waterproofing solution that delivers lasting roof protection with minimal cost, disruption, and downtime.
Watch: Reconditioning existing felt roofs with liquid membrane
We never take shortcuts — every project follows a rigorous, proven process designed to deliver lasting waterproof performance.
Every project starts with rigorous power-washing and decontamination of the entire roof deck, removing grime, moss, algae, and atmospheric deposits. The region's mild, wet mid-west climate accelerates surface contamination, and the waterproofing membrane requires a thoroughly prepared substrate to bond effectively and perform long-term.
Careful surface preparation is the cornerstone of every successful liquid waterproofing installation — there are no shortcuts to a lasting result.
All moss, lichen, root systems, and accumulated debris are systematically removed, and drainage channels fully cleared. The mild, damp conditions common across the mid-west promote persistent organic colonisation, particularly on flat roofs in sheltered residential estates and between commercial buildings.
Watch: LAVA 20 application on asphalt roof
Watch: Applying liquid membrane over fibreglass matting
Every crack, failed joint, deteriorated fixing, and compromised detail across the roof is identified and repaired before any waterproofing material is applied.
As demonstrated in the video, this typically involves:
With the roof fully prepared and all defects repaired, the liquid waterproofing system is applied in measured, overlapping passes to create a continuous protective barrier across the entire roof surface.
The system is built up layer by layer:
The finished result is a continuous, seamlessly bonded waterproof membrane that shields the roof against ponding water, severe weather, and thermal movement for decades.
Modern liquid-applied waterproofing systems offer Limerick property owners a proven, high-performance alternative to traditional roofing methods — delivering long-lasting results with minimal disruption.
Watch: Why installers prefer this system over traditional fibreglass
The vast majority of flat roofs across the region can be restored and waterproofed over the existing covering, dramatically extending the roof's service life at a fraction of the replacement cost.
The liquid membrane cures to form an unbroken, joint-free shield — eliminating the seams and weak points where traditional roofing systems are most vulnerable to leaks.
Liquid waterproofing is applied quickly without hot works, open flames, or heavy plant — ideal for homes and businesses throughout the area.
The finished membrane moves with thermal expansion and structural settlement, holding its seal through changeable mid-west weather conditions.
Formulated to endure Ireland's demanding conditions — from sustained rainfall and high humidity to the seasonal temperature shifts common across the mid-west.
Reconditioning and waterproofing an existing flat roof costs a fraction of full replacement, with lower labour, reduced material waste, and minimal disruption to your property.
Owing to its exceptional adhesion, flexibility, and longevity, this waterproofing system excels where traditional methods fail — providing a proven, long-term solution for flat roof protection across the region.
Versatile Protection for Every Property Type
Our liquid waterproofing systems are built for versatility, protecting flat roofs of every scale across Limerick — from single-storey home extensions to large commercial and industrial complexes. We regularly treat flat roofs on:
No matter the scale or complexity of the roof, we deliver consistent, professional results built to last year after year across the region.
Whether it's a small residential extension in Dooradoyle or a large commercial rooftop in Limerick city, our proven waterproofing system delivers lasting protection you can depend on.
Watch: Restoring and waterproofing existing flat roofs
Waterproofing Built for the Mid-West
Our flat roof waterproofing systems are installed strictly in accordance with manufacturer specifications and backed by long-term warranties of up to 25 years, providing property owners reliable protection and complete peace of mind. We utilise advanced systems such as the LAVA 20 waterproofing system for proven, long-term results.
As demonstrated in the video, many roofs that appear to be at the end of their life do not need to be stripped out or replaced. In many cases, existing felt roofs — even those decades old — can be professionally cleaned, reconditioned, detailed, and fully waterproofed using advanced liquid-applied systems. Even valley leak repairs can be addressed as part of the reconditioning process.
Our approach:
For you, this means:
By combining specialist installation methods with manufacturer-backed warranties, we deliver dependable, future-proof waterproofing solutions that protect your property long after the work is complete.
Common questions from Limerick property owners about our flat roof waterproofing services. For more general questions, visit our main FAQ page.
Yes, we serve all of Limerick city and county, including Raheen, Dooradoyle, Castletroy, Annacotty, Corbally, Newcastle West, Adare, Kilmallock, and all surrounding areas. We treat both residential and commercial flat roofs throughout the region.
We typically schedule inspections across Limerick within 2-3 working days of your enquiry. For urgent leaks or weather-related damage, we offer priority callouts throughout the city and county.
We waterproof all flat roof types found across Limerick — felt, bitumen, EPDM, TPO, fibreglass, concrete, and metal roofs. This includes home extensions, period property flat roofs, garages, apartment blocks, commercial units, and industrial buildings.
Every roof is different, so we provide free, no-obligation on-site consultations and transparent quotations for all Limerick properties. You receive a detailed cost breakdown before work begins — no hidden charges or surprises.
In most cases, yes. The majority of flat roofs we treat are reconditioned and restored rather than fully replaced. Our liquid-applied membranes bond directly over existing surfaces after proper preparation, avoiding the cost and disruption of a complete strip-out and rebuild.
Our flat roof waterproofing systems carry manufacturer-backed warranties of up to 25 years. The exact warranty period depends on the system specified for your property, and full documentation is provided upon completion of every project.
Absolutely. We regularly waterproof commercial and industrial flat roofs across Limerick, including offices and retail units in the city centre, premises at Raheen Business Park, buildings at the National Technology Park in Castletroy, and industrial facilities throughout the county.
We cover all of Limerick city and County Limerick: Raheen, Dooradoyle, Castletroy, Annacotty, Castleconnell, Corbally, Newcastle West, Abbeyfeale, Kilmallock, Adare, Bruff, Caherconlish, Patrickswell, Croom, Rathkeale, Cappamore, and every area in between.
Concerned about the condition of your flat roof? We offer free, no-obligation consultations for all Limerick properties — residential, commercial, and industrial.
Our specialist will carry out a comprehensive assessment of your flat roof, outline your options clearly, and provide a detailed quotation within one hour. Visit our blog for more information about flat roof maintenance and waterproofing best practices.
What you can expect:
Contact us today to arrange your free flat roof consultation in Limerick and find out why property owners across Raheen, Dooradoyle, Castletroy, and beyond trust Dublin Protective Coatings for professional flat roof repair and waterproofing.
