GacoFlex Coating Systems · Ireland

Commercial Roof Coatings — GacoFlex Silicone, Acrylic & Urethane

Duratite supplies GacoFlex commercial roof coatings in Ireland — three systems, specified by roof type, drainage, traffic and budget, with manufacturer-backed warranties of up to 20 years and installation by an approved contractor network.

Up to 20-year manufacturer-backed product warranty CRRC solar reflectance 0.91 (white S42) Spray, brush or roller applied
GacoFlex silicone commercial roof coating applied across a large UK roofGacoFlex systems · IrelandSilicone · acrylic · urethane
3
GacoFlex coating systems
20-yr
Max manufacturer warranty
Fixed price
Per m² fully installed
0.91
CRRC solar reflectance (white S42)
The Range

Three GacoFlex coating systems

Whether you need a highly reflective energy-saving coating or a robust waterproof membrane for long-term protection, we specify the GacoFlex system that best matches your building’s roof, drainage and budget.

Flagship · Most Specified
Gaco S42 silicone roof coating 19L pail

GacoFlex Silicone System

A premium 100% silicone membrane for roofs needing the highest levels of waterproofing, flexibility and long-term protection — built around Gaco S42, with SF42 fibre-reinforced seam seal at laps and details.

  • Seamless, fully-adhered membrane — no joints or weak points
  • Permanently resists ponding water, UV and thermal movement
  • Single-coat over metal, flat and problem leaking roofs
  • Extends roof life and cuts long-term maintenance
Cost-Efficient · Cool Roof
GacoFlex 127 Series acrylic waterproof coating pail

GacoFlex Acrylic System

A cost-effective, weather-resistant elastomeric acrylic (127 Series) ideal for large commercial roofs where reflectivity, surface protection and value are the priorities.

  • Reflective white finish lowers roof temperature and cooling costs
  • Strong adhesion to metal, cement-fibre and coated surfaces
  • Excellent weather, rain and UV durability
  • Fast application and drying over large roof areas
Heavy-Duty · Walk-On
GacoFlex U91 urethane base coat pail

GacoFlex U9 Urethane System

A heavy-duty two-coat urethane system (U91 base + U92 aliphatic top coat) for roofs that demand exceptional impact, abrasion and chemical resistance — pedestrian decks, plant rooms and podiums.

  • U91 high-build elastomeric base for flexibility and adhesion
  • U92 UV-stable, walk-on top coat that won’t yellow or chalk
  • Outstanding tensile strength — bridges movement and cracks
  • Cold-applied, fully bonded — no hot works, no tear-off
The Certified System

Gaco S42 and its companion products

Gaco S42 is the flagship — but a fully warrantied installation also relies on specialist companion products. Together they form the certified silicone roof system specified across warehouses, factories and commercial buildings.

Gaco Wash roof cleaning solution

Gaco Wash

Specialist cleaning solution that removes dirt, algae, moss and surface contaminants — ensuring maximum adhesion of the silicone coating system.

Gaco SF42 fibre-reinforced silicone seam sealant

Gaco SF42 SeamSeal

Fibre-reinforced silicone seam sealant for laps, fixings, fasteners and detail areas. High-build formula bridges joints and movement points permanently.

GacoPatch instant-cure silicone repair sealant

GacoPatch Silicone Waterproofing

Instant-cure silicone sealant for targeted leak repairs and emergency waterproofing — can be applied in wet or dry conditions, even during active rainfall.

Choose With Evidence

Which system is right for your roof?

The right coating depends on your roof’s condition, drainage, traffic level and long-term goals. Duratite specifies all three GacoFlex systems — each has a place, and no one system is sold as the answer to everything.

Verdict: we confirm the best fit on a free site survey — then a fixed price, fully installed.

Ponding water or permanent puddles → S42 silicone — it will not degrade in constant water contact

Large roof, good drainage, cool-roof priority → 127 Series acrylic

Pedestrian decks, plant rooms and trafficked areas → U9 urethane, walk-on rated

Leaking right now → GacoPatch instant-cure repair while the system is specified

Cold weather → silicone applies at temperatures as low as 0°C, year-round

Choose With Evidence

Which system is right for your building?

Duratite specifies all three GacoFlex systems — each has a place. The right coating depends on your roof’s condition, drainage, traffic level and long-term goals. We confirm the best fit on a free site survey.

Compare the systemsSilicone — Gaco S42
Flagship · flat & low-slope
Acrylic — GacoFlex 127
Cost-efficient · cool roof
Urethane — U91/U92
Heavy-duty · trafficked
Best suited toFlat & metal roofs with ponding waterLarge reflective metal roofs & cool-roof projectsPedestrian decks, plant rooms & trafficked areas
Ponding water resistanceExcellentPoorVery good
UV / weather resistanceOutstandingVery goodOutstanding — U92 aliphatic top coat
Foot-traffic durabilityLimitedLimitedWalk-on rated
Cool-roof / energy savingsHigh (white)High (white)Standard
Recoatable at end of lifeYes — silicone-on-siliconeYes — compatible substrateYes — recoat with U92
ApplicationSingle coat, cold-applied2-coat, cold-applied, fast drying2-coat (base + top), cold-applied
Manufacturer warrantyUp to 20 yrsUp to 15 yrsUp to 20 yrs
Typical installed costFixed priceFixed priceFixed price
Complete-system prices, fully installed — preparation, reinforcement and application included. Confirmed as a fixed price after a free site survey.
Side By Side

GacoFlex vs Polyroof vs Triflex vs Liquasil

Specifiers, contractors and building owners regularly compare these four systems for commercial flat-roof and metal-roof projects. The table sets them out side-by-side using publicly available manufacturer data — no spin. Use it as a starting point, then talk to a specialist.

Compare the systemsGacoFlex S42
Duratite — supply in Ireland
Polyroof
UK manufacturer
Triflex ProDetail
PMMA · Germany
Liquasil
UK manufacturer
System type100% silicone, single-coatPolyester-reinforced PUPMMA (acrylic resin)Single-coat silicone
Manufacturer warrantyUp to 20 yearsUp to 20 years — Protec / IBG variantsUp to 25 years — specifier schemeUp to 25 years — Metalseal / SilaPrime
ApplicationCold-applied, brush/roller/sprayCold-applied, fully reinforcedCold-applied, fast-cure PMMACold-applied, brush/roller
Cure time (typical)4–8 hrs rainproof; 24 hrs full24–48 hrs resin + reinforcement~30 mins rainproof PMMA2–4 hrs rainproof; 24 hrs full
Solar reflectance (CRRC)SR 0.91 white S42Not CRRC ratedNot CRRC ratedSR ~0.85 white
Ponding water ratingPermanent ponding ratedDrainage requiredDrainage requiredPermanent ponding rated
Typical installed cost in IrelandFixed price after free surveyFixed price after free surveyFixed price after free surveyFixed price after free survey
Pedestrian ratedAdd U92 top coat for trafficYes — with anti-slip topcoatYes — heavy-duty PMMAAdd traffic-grade silicone
Best forFlat & metal roofs with ponding; refurbishment over existingFlat roof refurbishment with reinforcement layerComplex details, balconies, fast-cure deadlinesMetal roof refurbishment, cut edge, gutters
What It Costs

GacoFlex coating costs in Ireland

80%maximum saving vs full roof replacement
Fixed price after free surveyNo bare material rates

GacoFlex silicone and heavy-duty urethane systems are priced per roof as a fixed written price. All quotes are fixed-price after a free site survey.

Complete-system prices, fully installed. We don’t quote bare material rates — the price you get covers preparation, reinforcement at laps and details, and application by an approved contractor.
How It Works

From enquiry to a warrantied roof

Duratite is your single point of contact: we survey and specify the system, then match you with a vetted contractor from our Ireland-wide approved network to carry out the work.

1

You enquire

Owners, tenants and facilities managers send the building, roof and a few photos.

2

Free site survey

Substrate, ponding, cut edges, access and drainage assessed on site.

3

Design & fixed quote

System, reinforcement and any traffic top coat — at a fixed price.

4

Approved contractor installs

Cold-applied over the live building — no tear-off, building stays open.

5

Warranty & handover

Up to 20-year manufacturer-backed product warranty and documentation.

System In Service

UK project: NHS plant deck — the U9 urethane system at work

Failing asphalt over a trafficked plant room at a South West NHS Trust, with leaks risking the MRI scanner room below. The GacoFlex U91/U92 urethane two-coat walk-on system was specified with full pedestrian rating for ongoing M&E maintenance — watertight handover with no clinical disruption, and a 20-year manufacturer warranty issued.

800 m²
Hospital plant deck
U91/U92
Walk-on urethane system
0
Clinical disruption
20-yr
Warranty issued
Completed GacoFlex coating system on a large commercial roof
Seamless GacoFlex silicone membrane on a commercial roof
GacoFlex silicone — seamless, fully bonded
White reflective GacoFlex cool-roof coating on a commercial building
Cool-roof reflective coating
Industrial warehouse roof protected with a GacoFlex coating system
Industrial warehouse roof — coated
Straight Answers

Commercial roof coating questions

Is silicone or acrylic roof coating better for commercial roofs?
It depends on your roof’s conditions. GacoFlex silicone is best for roofs with ponding water, permanent puddles, or areas prone to standing water — silicone will not degrade in constant water contact. GacoFlex acrylic is ideal for large-area roofs with good drainage where fast application and cost-effectiveness are priorities. Both offer excellent UV resistance, reflectivity, and long-term waterproofing. A free Duratite roof survey will determine which system is right for your building.
What is the most durable commercial roof coating?
For long-term durability on commercial flat roofs, GacoFlex 100% silicone roof coating is the industry benchmark. Unlike organic coatings, silicone does not break down under UV exposure, does not become brittle with age, and permanently resists ponding water. It maintains its flexibility and waterproofing performance for 20+ years. At end of life, it can be recoated without removal.
What warranty do you get with GacoFlex roof coatings?
GacoFlex commercial roof coating systems are backed by manufacturer warranties of up to 20 years covering material defects and waterproofing performance. Gaco is part of Amrize. At end of warranty, the roof can be recoated to extend protection without replacement. Duratite also ensures all installations are carried out by trained, approved contractors.
Can roof coatings be applied in winter or cold weather?
GacoFlex silicone roof coatings can be applied in temperatures as low as 0°C, making them suitable for year-round application across Ireland and Northern Ireland. Acrylic coatings require temperatures above 5°C and no rain forecast for 24 hours. Your Duratite-approved contractor will schedule installation around weather conditions to ensure optimal adhesion and curing.
What is liquid applied roof waterproofing?
Liquid applied roof waterproofing is a cold-applied coating system that is rolled, brushed or sprayed directly onto an existing roof surface. It cures to form a seamless, elastomeric waterproof membrane with no joints or mechanical fixings. GacoFlex systems offer silicone, acrylic and urethane formulations for different roof types and conditions.
Do commercial roof coatings reduce energy costs?
Yes. GacoFlex white reflective roof coatings reflect up to 85% of solar radiation, significantly reducing heat absorption through the roof. This can lower internal temperatures by up to 10°C in summer, reducing air conditioning and cooling costs. Cool roof coatings also contribute to a better BER (Building Energy Rating).
Free Survey · Fixed Price

Get the right system specified — not just a coating sold

Tell us about your roof — type, approximate size and the problem. We survey it free, design the right GacoFlex system and issue a fixed quote with a manufacturer-backed product warranty of up to 20 years.

Prefer to talk it through?

Speak to a roof coatings specialist — silicone, acrylic or urethane, no obligation, no hard sell.

info@duratite.ie · Mon–Fri, 8am–5pm
Areas we cover

Duratite across Ireland and Northern Ireland

Free survey and fixed written specification in every county, installed through our approved installer network. Choose your area.

Commercial Roof Waterproofing

Roof Waterproofing DublinRoof Waterproofing CorkRoof Waterproofing GalwayRoof Waterproofing LimerickRoof Waterproofing WaterfordRoof Waterproofing KilkennyRoof Waterproofing DroghedaRoof Waterproofing DundalkRoof Waterproofing AthloneRoof Waterproofing SligoRoof Waterproofing LetterkennyRoof Waterproofing TraleeRoof Waterproofing EnnisRoof Waterproofing NavanRoof Waterproofing WexfordRoof Waterproofing BelfastRoof Waterproofing DerryRoof Waterproofing NewryRoof Waterproofing LisburnRoof Waterproofing Armagh
Roof Waterproofing by county (32)
County CarlowCounty DublinCounty KildareCounty KilkennyCounty LaoisCounty LongfordCounty LouthCounty MeathCounty OffalyCounty WestmeathCounty WexfordCounty WicklowCounty ClareCounty CorkCounty KerryCounty LimerickCounty TipperaryCounty WaterfordCounty GalwayCounty LeitrimCounty MayoCounty RoscommonCounty SligoCounty CavanCounty DonegalCounty MonaghanCounty AntrimCounty ArmaghCounty DownCounty FermanaghCounty LondonderryCounty Tyrone

Technical guides for Ireland

TGD L 2022 insulationImprove your BERAsbestos cement roofsFarm building condensationWarehouse insulationFlat roof leaksOpen vs closed cellNorthern Ireland guide

All areas we cover →

Free Site Survey

Get a Free Site Survey & Quote

Tell us about your building and we’ll recommend the right system — foam, waterproofing or both — surveyed, specified and quoted at no cost.

  • Reviewed by a Duratite specialist
  • No obligation, no hard sell
  • One team from survey to warranty
  • Ireland and Northern Ireland coverage
info@duratite.ie
No obligation · We’ll never sell your details · Typical reply within 1 working day
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Email a Duratite expert info@duratite.ie