Spray Foam Insulation in Dublin — Enverge & Purios Spray Foam

Dublin is Ireland’s largest commercial property market, and a great deal of it is working space rather than offices. Warehousing and bonded stores cluster around Dublin Port, managed since 1997 by a self-financing state company, while logistics and trade units line the M50 and the approaches to Dublin Airport, which handled a record 36.43 million passengers in 2025. Freight, catering, maintenance and distribution businesses tend to occupy portal-frame sheds with profiled steel roofs and walls — large, draughty envelopes with long runs of purlins and plenty of leaky laps.

Rainfall is modest by Irish standards. Met Éireann’s Dublin Airport station averaged 772.5 mm a year over 1991–2020, well under the national figure of roughly 1,288 mm. A lower total does not make a shed dry inside, though: the same station logged close to 200 days a year with at least 0.2 mm, and condensation is driven by internal humidity and cold surfaces rather than by how much rain falls. When heated, occupied air meets the underside of a single-skin roof on a clear night, the moisture condenses and drips onto racking, pallets and vehicles below.

Closed-cell Enverge Nexseal LE tackles this by bonding straight to the inside of the sheeting. With a declared thermal conductivity of 0.022 W/m·K, it insulates in a relatively slim layer, and because there is no cavity behind it, warm air has nowhere to reach the cold metal. The same pass seals laps, eaves and fixings. Where a unit needs a lighter open-cell product — say, an office mezzanine or an already weathertight roof void — Sucraseal or Purios may suit better. Duratite supplies these materials and passes Dublin enquiries to an approved installer, who carries out the survey and application. Before spraying, the installer checks for loose fixings, failed rooflights or water getting in from outside, because foam should go onto a sound, dry sheet. Racking and stock in each bay are moved or sheeted over so the application can be done cleanly.

For compliance, non-domestic insulation upgrades in the Republic are measured against Technical Guidance Document L 2022 (Buildings other than Dwellings), in force for work beginning on or after 25 October 2022. Its material-alteration table gives an average U-value of 0.25 W/m²K for a pitched roof insulated on the slope. Within the city boundary, Dublin City Council’s building control section is the authority, and the Health and Safety Authority regulates the work itself — including safe access at height and keeping staff clear of the spray zone in a busy logistics building.

A good survey of a Dublin unit starts before anyone climbs a ladder. Owners near the port or along the airport approaches usually get the clearest recommendation when they gather a handful of things in advance: the original drawings or a simple floor plan showing bay widths, a note of which areas are heated and for how many hours, and dated phone photos of where water drips onto racking or vehicles. Pictures taken first thing on a cold morning are especially useful, because that is when moisture collecting beneath single-skin sheeting is easiest to see. It also helps to list what goes on inside each bay. A cold dispatch area with doors open to the yard behaves very differently from a heated trade counter or a first-floor office tucked under the same roof, and the installer may treat those zones differently rather than spraying the whole shed to one specification. Access matters too. Many estates off the M50 share yards, gates and loading docks with neighbouring tenants, so confirm who controls the service yard, where a mobile platform can stand, and whether any landlord consent is needed before work on the roof structure. If the building is leased, check the repairing clause as well. With that information to hand, the approved installer can price the job accurately, plan bay-by-bay working around deliveries, and identify early any roof defects that must be put right before foam goes on. Duratite's part is supplying the Enverge materials and making the introduction, so the conversation about timings happens directly with the installer.