Serving Dublin & surrounding areas

Emergency
Get a Quote

Fibreglass (GRP) Roofing Dublin

A durable flat roofing option for suitable roofs, installed and repaired across Dublin.

Seamless fibreglass finish

Good detailing around edges

Clear written quote

Get a Quote
Call Now

Where GRP Works Best

GRP (Glass Reinforced Plastic) fibreglass roofing is a durable flat roofing option that works well on small to medium-sized flat roofs across Dublin properties. It’s commonly used on extensions, garages, porches, dormer roofs, and other areas where a seamless, robust finish is needed. GRP creates a single waterproof surface with no joints or seams, making it particularly effective for complex roof shapes with multiple upstands, edges, or details.

GRP is not suitable for every flat roof. Very large commercial roofs, roofs with severe ponding issues, or those with inadequate structural support may not be ideal candidates for fibreglass systems. We always inspect the roof first — checking the deck condition, drainage falls, structural integrity, and intended use — before recommending GRP. If we believe another system would perform better for your property, we’ll explain why and suggest alternatives. Our goal is to recommend the right solution, not just sell a system.
Why GRP?

Built to Last

GRP fibreglass roofing combines durability with versatility — a proven solution for Dublin properties.

Seamless & Strong

Single-piece fibreglass laminate with no joints or seams. Laminated in place to create one continuous waterproof surface.

Detail-Friendly

Fibreglass moulds around complex shapes, edges, outlets, and upstands — perfect for awkward roof configurations.

Low Maintenance

Once installed, GRP requires minimal upkeep. Clear debris periodically, inspect after storms — that’s about it.

20-30+

Years Expected Life

100%

Waterproof Seal

0

Joints or Seams

Low

Maintenance Needs

GRP Roofing Services

Comprehensive fibreglass roofing installation and repair services across Dublin.

New GRP Roof Installation

Complete fibreglass roof installation on suitable properties.

GRP Leak Repairs

Trace and repair leaks in existing GRP roofs.

Edge Trim Repairs

Repair or replace damaged edge trims and flashings.

Outlet/Drain Detailing

Proper fibreglass detailing around outlets and drains.

Upstand/Parapet Repairs

Repair GRP upstands at walls and parapet junctions.

Crack Repair & Re-Seal

Repair cracks and reseal damaged areas.

Inspection & Advice

Professional assessment and honest recommendations.

Photos Before/After

Document work for your records on request.

Our GRP Installation & Repair Process

When you contact us for GRP roofing in Dublin, we start with a thorough inspection. We assess the roof deck condition, check for adequate falls and drainage, identify any structural concerns, and confirm that GRP is the right system for your property. Not every roof is suitable for fibreglass — and we’ll tell you honestly if another option would work better.

If GRP is appropriate, preparation is absolutely critical. The roof deck must be dry, clean, and structurally sound. We repair any damaged decking, ensure proper drainage falls, and prepare all edge details, upstands, and penetrations before any fibreglass work begins. Poor preparation leads to poor results — bubbling, delamination, and premature failure — so we take this stage seriously. Rushing preparation to save time is a false economy that costs more in the long run.

If GRP is appropriate, preparation is absolutely critical. The roof deck must be dry, clean, and structurally sound. We repair any damaged decking, ensure proper drainage falls, and prepare all edge details, upstands, and penetrations before any fibreglass work begins. Poor preparation leads to poor results — bubbling, delamination, and premature failure — so we take this stage seriously. Rushing preparation to save time is a false economy that costs more in the long run.

After installation, we carry out final checks, clean up the site properly, and provide you with care instructions. GRP roofs are low-maintenance but not maintenance-free — we explain what you should (and shouldn’t) do to keep the roof performing well. We take photos before and after for your records. See our flat roof leak repair page if you have an existing GRP roof that’s leaking.

Leaking Flat Roof?

Ask if GRP fibreglass is a suitable option for your Dublin property.
Call +353858483439
Request Call-Back

GRP vs Other Systems

Understanding the differences helps you choose the right flat roofing system for your Dublin property.

Roofing Comparison
Feature Felt Roofing GRP Fibreglass Liquid Coating
Construction Seamed (overlaps) Seamless laminate Seamless coating
Best For Large/commercial Small/medium roofs Refurbishments
Detail Work Good Excellent Excellent
Expected Life 15-25 years 20-30+ years 10-20 years
Maintenance Low Low Low
Installation Torch-on heat Laminate & resin Roller/spray
The best option depends on your roof size, condition, usage, and budget. We inspect first and advise honestly — no hard-selling.

Recent GRP Roof Work

Extension GRP Roof — Malahide

Complete GRP installation on new rear extension. Seamless finish, proper edge trims, excellent detail work around upstands.

GRP Leak Repair — South Dublin

Cracked GRP roof on garage causing leak. Repaired crack, resealed, applied topcoat. Leak resolved, roof made watertight.

Dormer GRP Roof — Dublin City

Fibreglass roof on period property dormer. Complex detailing, matching trim work, clean professional finish.
It seems we can’t find what you’re looking for.

Areas We Cover

We provide GRP fibreglass roofing services across Dublin and surrounding areas, including Dublin City, North Dublin, South Dublin, Swords, Malahide, Portmarnock, Lucan, Tallaght, Dundrum, Blackrock and nearby areas.

Not listed? Call us — we likely cover your area.

Frequently Asked Questions

Is GRP suitable for all flat roofs?
No, GRP fibreglass roofing is not suitable for all flat roofs. It works best on small to medium-sized roofs with sound structural decking, adequate drainage falls, and proper support. Very large roofs, those with severe ponding issues, inadequate structural support, or certain substrate types may not be ideal for GRP. Roofs that experience significant movement or thermal expansion may also be problematic. We always inspect the roof first and assess whether GRP is appropriate. If we believe felt, liquid coating, or another system would perform better for your property, we’ll explain why and recommend the best option honestly. Our goal is to install the right system, not force GRP onto every job.
It depends on the condition of the existing roof and the type of substrate. In some cases, GRP can be installed over sound existing roofing materials — such as timber decking or certain well-adhered felt layers — if the substrate is stable, dry, and properly prepared. However, if the existing roof is deteriorated, damp, poorly bonded, or structurally unsound, it’s usually better to strip back to the deck and start fresh. Installing GRP over a failing substrate leads to poor adhesion, bubbling, and premature failure. We inspect the existing roof and recommend the best approach. Sometimes stripping back adds cost upfront but saves money long-term by ensuring proper installation and avoiding future problems.
Yes, in most cases we can repair leaking GRP roofs. Common issues include cracks in the laminate, failed edge trims, damaged upstand details, or poor original installation around outlets and penetrations. We inspect the roof to identify the leak source, assess the overall condition, and determine whether repair is feasible or whether more extensive work is needed. Small localised damage — a crack, a failed seal, or a small delaminated area — can often be repaired effectively. If the GRP is widely cracked, delaminating across large areas, or has fundamental installation issues, it may be more cost-effective to replace the affected section or the entire roof. We’ll explain both options honestly. See our flat roof leak repair page for more on leak tracing.
The lifespan of a GRP roof depends on the quality of materials used, the thoroughness of installation, the presence of proper drainage, and ongoing maintenance. A well-installed GRP roof on a suitable property can perform effectively for 20-30 years or more. However, we cannot guarantee specific lifespans because every roof is different — exposure to UV, foot traffic, debris, and underlying substrate issues all affect longevity. Poor installation, inadequate preparation, or chronic ponding water will significantly shorten the lifespan. We use quality materials, prepare roofs properly, and install GRP to manufacturer specifications to maximise durability. Regular clearing of debris and periodic inspections help extend the life of any flat roof system, including GRP.
Yes, one of the advantages of GRP fibreglass roofing is its ability to create seamless waterproof details around rooflights, skylights, outlets, drains, pipes, and other penetrations. Because GRP is laminated in place, it can be shaped and moulded to fit around complex roof features without creating seams or joints — areas that are often leak points on traditional felt systems. Proper detailing is critical: we build up the laminate at upstands, ensure adequate overlap onto flanges and frames, and create watertight seals using resin and matting. Poor detailing around these areas is a common cause of GRP roof failures, so we take care to get it right during installation. If your roof has multiple penetrations or complex details, GRP may be a good option, subject to inspection.
Yes, always. After inspecting your roof and confirming that GRP is suitable, we provide a clear written quote that explains the work to be carried out, the materials and system to be used (including topcoat colour options), preparation requirements, and the cost breakdown. We take photos before work starts to document the roof’s condition, and we provide after photos showing the completed installation. This documentation is useful for your property records, insurance purposes, or future reference. Everything is explained upfront and in writing — no surprises, no hidden extras. You’ll know exactly what you’re getting and what you’re paying for before we start any work.
Yes, we carry full public liability insurance for all roofing work, including GRP fibreglass installation, repairs, and associated preparation and trim work. This protects your property while we work at height and apply resin-based systems. GRP installation requires proper access equipment, careful material handling, and working with chemicals (resins), so we follow health and safety procedures throughout. You can ask to see our insurance documentation at any time. We’re experienced in installing and repairing GRP roofs on Dublin properties — both domestic and commercial — and we take professionalism and quality seriously on every job.
GRP roofs are low-maintenance but not maintenance-free. You should periodically clear debris, leaves, and moss from the roof surface to prevent drainage blockages and avoid organic material sitting on the GRP. Inspect the roof after storms or heavy weather for any visible damage. Keep outlets and gutters clear to ensure proper drainage — standing water will eventually degrade any roof system, including fibreglass. Avoid dragging heavy or sharp objects across the surface that could damage the topcoat or laminate. The topcoat provides UV protection, so if it becomes worn or damaged over time, recoating may be advisable to extend the roof’s life. We recommend a professional inspection every few years to catch minor issues before they become major problems.
Scroll to Top