Flat Roof Leak Repair & Waterproofing
Leaking flat roof? Professional repair for commercial and domestic properties. Seamless liquid membrane with up to 25 years warranty.
Learn More
HSA Licensed
Fully Insured
Roof Leak Repair & Waterproofing Ireland
Leaking roof damaging your property? Our specialist team delivers permanent waterproofing solutions for flat roofs, valleys, asbestos roofs and commercial properties across Ireland. Up to 25-year warranty on all work.
25-Year Warranty
Guaranteed Protection
Free Roof Survey
No Obligation
15+ Years Experience
Proven Expertise
Professional Flat Roof & Asbestos Roof Services
Expert roof leak repair, waterproofing solutions for flat roofs and asbestos roof encapsulation services, backed by HSA. Operating across Ireland and Northern Ireland.
Free Service
Free Roof Inspection & Quote – We Come to You
Get a professional roof assessment at no cost. We offer free on-site inspections and quotes for businesses and homeowners across Ireland. Our experienced team will visit your property, assess your roof's condition, and provide a detailed, transparent quote – all completely free of charge with no obligation.
What's included in your free inspection?
- Complete visual assessment of your flat roof condition
- Identification of leaks, damage, or potential problem areas
- Expert recommendations tailored to your roof type
- Same-day written quote with clear pricing
- Honest advice – no pressure, no hidden fees
Why choose our free quote service?
We believe in earning your trust before earning your business. That's why we offer 100% free consultations with no call-out charges. Whether you need flat roof waterproofing, roof repairs, or a full roof replacement, we'll give you all the information you need to make the right decision.
With over 20 years of experience and manufacturer-backed warranties of up to 25 years, we are the trusted choice for roof waterproofing across Ireland.
AW
Adrian Walsh
2 months ago
I would highly recommend Dublin Protective Coatings. They fixed our very problematic flat roof in no time. They did a very thorough and professional job. The roof was not only fixed and guaranteed for 20 years but it also looks amazing.
SC
Sharp Construction
3 months ago
I have used Dublin Protective Coatings for 2 large commercial projects in Dublin City. Both sites were difficult to access and these guys carried their work out in difficult conditions without a groan. Professional, courteous, and mannerly.
AP
Adam Powell
4 months ago
Outstanding service from the minute I got in touch. The lads have completed a number of flat roof projects for us now. All of them have been completed 10/10 & nothing but happy customers. Communication is great and prices are always reasonable.
PM
Pat Murray
5 months ago
Henry and his team did a fantastic job at my premises in Killiney Shopping Centre. The final result was way beyond my expectations. The lads were always so courteous and positive. I can recommend this company without a shadow of a doubt.
TB
Tony Byrne
6 months ago
Henry & Lucas recently installed the Lava 20 polyurethane liquid roof system on my extension. Despite some challenging weather during the job, the team got the roof watertight and looking good. The Lava 20 system is much tougher than the silicone it replaced.
JT
Jonathan Townshend
7 months ago
Unbelievable service from start to finish, Henry in particular was an absolute star! The quality of the work is fantastic and fast, the results are better than when the flat roof was first installed. 100% recommend DPC!
Join Our Satisfied Customers
Get a free roof inspection and discover why 61 customers trust us with their roofing needs.
Proven Waterproofing Solutions
We use two BBA-certified waterproofing systems, both engineered for long-term protection with zero maintenance.
Polyurea System
Hot Sprayed Waterproofing
A BBA-certified, two-component polyurea waterproofing system applied using specialist hot-spray equipment and offers seamless protection for flat and pitched roofs.
- Fast curing — dry time of 5 seconds, tack-free in 20 seconds
- Severe climate rated — performs from -20°C to +90°C
- Seamless membrane — 1.9mm thick layer eliminates joints
- Multi-substrate — Asbestos, Insulation, Concrete, Wood, Metal, etc.
5
Seconds Dry Time
Polyurea Roof Coating
LAVA 20 System
Liquid-Applied Polyurethane Membrane
Single component liquid polyurethane designed for durable, seamless waterproofing with a 25-year service life.
- Performance — High elasticity (>400–600% elongation) and resistant to UV, chemicals, and extreme temperatures
- Versatility — Suitable for roofs, balconies, podium decks, and car parks, often used in refurbishment projects
- Certified — ETA, CE, BBA, Fire Rated BroofT4
25
Year Service Life
LAVA 20 Waterproofing
Not sure which system is right for your roof? We'll assess your property and recommend the best solution — both systems come with a 25-year manufacturer warranty.
Fast Application
Next-Day Leak Protection for Your Flat Roof
Tired of leaks, pooling water, and temporary fixes that don't last? Our spray-applied system seals and insulates your flat roof in a single day—no disruption, no waiting.
01 How It Works
We wash & dry the current surface, then apply a seamless closed-cell polyurethane foam with a polyurea topcoat. It bonds directly to your existing roof, eliminating joints and weak points where leaks typically start.
02 Why It Works
Polyurea sets in just five seconds—creating a fully waterproof, UV-resistant membrane that moves with your building. No seams. No lifting edges. No water getting in.
03 Fast Turnaround
We complete up to 500 square metres in a single day. The 80m² roof in this video? Done in under eight hours—insulated and leak-proof before the next rainfall.
04 Added Bonus
You also get thermal insulation: 25mm of foam equals roughly 100mm of standard insulation board, helping reduce heat loss and energy bills.
80m² roof waterproofed in under 8 hours – watch the full process
Why It Matters
Most roof repair failures are caused by incorrect diagnosis, not bad materials. A proper roof survey ensures the system applied is compatible, durable and cost-effective.
Professional Assessment
Roof Survey — Expert Technical Assessment
A roof survey is more than a quick inspection. It's a detailed technical assessment of your roof condition, designed to determine the right waterproofing solution, not just a temporary fix.
Our survey is carried out by experienced waterproofing specialists — not sales reps.
What makes our Roof Survey different?
- Full condition assessment of the existing roof system
- Identification of structural weak points and failure causes
- Assessment of substrate suitability for liquid waterproofing
- Drainage and ponding water evaluation
- Lifespan analysis: repair vs full coating system
- System recommendation: Lava 20 or Polyurea
When do you need a roof survey?
- Ongoing leaks despite previous repairs
- Repeated patching that doesn't last
- Standing water or cracked membranes
- Before investing in a long-term coating system
- Before buying or refurbishing a property
What you receive
- Clear explanation of the problem (no jargon)
- Professional recommendation based on roof condition
- Written scope of works
- Transparent pricing and system options
- Expected lifespan and warranty options
Frequently Asked Questions
Everything you need to know about our roof waterproofing services. Can't find what you're looking for? Give us a call.
We use BBA-certified Lava 20 polyurethane and Polyurea systems – the most advanced liquid membranes available. These form a seamless, flexible coating that bonds directly to your existing roof surface. Unlike traditional felt or bitumen, our systems are UV-stable, fully waterproof, and backed by up to 25 years warranty.
Absolutely. We work on everything from small domestic extensions and garage roofs to large commercial warehouses. No job is too small or too large for our team. Whether you have a leaking porch roof or a 10,000m² industrial unit, we provide the same professional service and quality guarantee.
Yes, we provide nationwide coverage across the Republic of Ireland and Northern Ireland. Our teams are based in Dublin but regularly travel to Cork, Galway, Limerick, Belfast, and everywhere in between. For larger projects, we can arrange site accommodation to ensure efficiency.
Yes, our liquid membrane systems are designed to be applied directly over most existing roof surfaces including felt, asphalt, concrete, asbestos cement, fibreglass, and even old lead flashings. This eliminates costly strip-out and disposal, saving you time and money whilst providing superior waterproofing.
While we specialise in flat roofs and low-pitch roofing, we also repair and waterproof pitched roof valleys, box gutters, parapet walls, and chimney flashings. If you have a leak on a pitched roof, chances are it's in one of these vulnerable areas where our liquid systems excel.
Yes, all our waterproofing systems come with manufacturer-backed warranties. Depending on the system and specification, warranties range from 10 to 25 years. We also provide our own workmanship guarantee, and we'll return to address any issues during the warranty period at no extra cost.
