Duratite is the UK distributor for GacoFlex commercial roof coatings — three systems, specified by roof type, drainage, traffic and budget, with manufacturer-backed warranties of up to 20 years and installation by an approved UK contractor network.
GacoFlex systems · UK distributorSilicone · acrylic · urethaneWhether 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.
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.
A cost-effective, weather-resistant elastomeric acrylic (127 Series) ideal for large commercial roofs where reflectivity, surface protection and value are the priorities.
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.
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 UK warehouses, factories and commercial buildings.
Specialist cleaning solution that removes dirt, algae, moss and surface contaminants — ensuring maximum adhesion of the silicone coating system.
Fibre-reinforced silicone seam sealant for laps, fixings, fasteners and detail areas. High-build formula bridges joints and movement points permanently.
Instant-cure silicone sealant for targeted leak repairs and emergency waterproofing — can be applied in wet or dry conditions, even during active rainfall.
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.
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
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 systems | Silicone — Gaco S42 Flagship · flat & low-slope | Acrylic — GacoFlex 127 Cost-efficient · cool roof | Urethane — U91/U92 Heavy-duty · trafficked |
|---|---|---|---|
| Best suited to | Flat & metal roofs with ponding water | Large reflective metal roofs & cool-roof projects | Pedestrian decks, plant rooms & trafficked areas |
| Ponding water resistance | Excellent | Poor | Very good |
| UV / weather resistance | Outstanding | Very good | Outstanding — U92 aliphatic top coat |
| Foot-traffic durability | Limited | Limited | Walk-on rated |
| Cool-roof / energy savings | High (white) | High (white) | Standard |
| Recoatable at end of life | Yes — silicone-on-silicone | Yes — compatible substrate | Yes — recoat with U92 |
| Application | Single coat, cold-applied | 2-coat, cold-applied, fast drying | 2-coat (base + top), cold-applied |
| Manufacturer warranty | Up to 20 yrs | Up to 15 yrs | Up to 20 yrs |
| Typical installed cost | From £20/m² | From £20/m² | From £30/m² |
UK 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 systems | GacoFlex S42 Duratite — UK distributor | Polyroof UK manufacturer | Triflex ProDetail PMMA · Germany | Liquasil UK manufacturer |
|---|---|---|---|---|
| System type | 100% silicone, single-coat | Polyester-reinforced PU | PMMA (acrylic resin) | Single-coat silicone |
| Manufacturer warranty | Up to 20 years | Up to 20 years — Protec / IBG variants | Up to 25 years — specifier scheme | Up to 25 years — Metalseal / SilaPrime |
| Application | Cold-applied, brush/roller/spray | Cold-applied, fully reinforced | Cold-applied, fast-cure PMMA | Cold-applied, brush/roller |
| Cure time (typical) | 4–8 hrs rainproof; 24 hrs full | 24–48 hrs resin + reinforcement | ~30 mins rainproof PMMA | 2–4 hrs rainproof; 24 hrs full |
| Solar reflectance (CRRC) | SR 0.91 white S42 | Not CRRC rated | Not CRRC rated | SR ~0.85 white |
| Ponding water rating | Permanent ponding rated | Drainage required | Drainage required | Permanent ponding rated |
| Typical UK installed cost | £20 – £30 / m² | £60 – £130 / m² | £80 – £150 / m² | £45 – £95 / m² |
| Pedestrian rated | Add U92 top coat for traffic | Yes — with anti-slip topcoat | Yes — heavy-duty PMMA | Add traffic-grade silicone |
| Best for | Flat & metal roofs with ponding; refurbishment over existing | Flat roof refurbishment with reinforcement layer | Complex details, balconies, fast-cure deadlines | Metal roof refurbishment, cut edge, gutters |
GacoFlex silicone typically costs £20–£30 per m² fully installed (heavy-duty urethane around £30–£40 per m²). A 1,000 m² flat or metal roof costs roughly £20,000–£30,000, a fixed written price. All quotes are fixed-price after a free site survey.
Duratite is your single point of contact: we survey and specify the system, then match you with a vetted contractor from our UK-wide approved network to carry out the work.
Owners, tenants and facilities managers send the building, roof and a few photos.
Substrate, ponding, cut edges, access and drainage assessed on site.
System, reinforcement and any traffic top coat — at a fixed price.
Cold-applied over the live building — no tear-off, building stays open.
Up to 20-year manufacturer-backed product warranty and documentation.
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.
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 an up to 20-year manufacturer-backed warranty.
Speak to a roof coatings specialist — silicone, acrylic or urethane, no obligation, no hard sell.
Tell us about your building and we’ll recommend the right system — foam, waterproofing or both — surveyed, specified and quoted at no cost.
