Engineered to interface seamlessly with modern composite facades, single-ply roof membranes, cold-rolled sub-structures, and high-performance industrial envelopes throughout Dublin, Cork, Shannon, and Belfast.
50–100mm stone wool slabs engineered for non-combustible parapet upstand cavity filling, meeting Irish TGD Part B fire containment and thermal bridging standards.
0.18–0.5mm heavy-gauge corrosion-proof alu-zinc steel substrate with stone granulate coating, built for harsh West Coast Atlantic marine salinity exposure.
Self-adhesive high-elasticity composite flashing roll. Non-toxic eco-alternative to Code 4 lead, creating flexible watertight seals across masonry and metal upstands.
Precision extruded aluminium drip trim engineered with an anti-capillary break, diverting intense wind-driven rain away from external render and rainscreen claddings.
Continuous steel-faced mineral wool core insulated panels providing up to 240 minutes fire resistance for boundary parapets and industrial logistics centres.
Engineered structural insulated envelope systems delivering continuous thermal breaks ($\lambda \approx 0.022\text{ W/m}\cdot\text{K}$) for agri-food storage facilities.
Industrial airtight access assemblies preventing condensation and air leakage along elevated maintenance walkways and plant-room parapet interfaces.
Precision-moulded thermal panels compatible with custom perimeter flashing cappings, built for retail, bakery distribution, and pharmaceutical clean-rooms.
A technical review of dynamic wind uplift forces, non-repeating thermal bridges, and driving rain resistance according to NSAI and Irish Building Regulations.
In Ireland's oceanic climate, the parapet perimeter represents the most vulnerable interface of any industrial or commercial flat roof. Characterised by frequent Atlantic low-pressure fronts, heavy directional rainfall, and severe gust velocity, parapets demand rigorous aerodynamic geometry, thermal continuity, and certified non-combustibility far beyond generic flashings.
When specifying parapet wall flashing systems for projects in Dublin, Cork, Limerick, or Galway, standard prescriptive detailing often fails due to three persistent failure mechanisms: capillary action beneath capping joints under cyclic wind gusts, micro-tearing of membrane junctions caused by uncalculated thermal expansion, and condensation tracking resulting from uninsulated structural upstands.
According to the Irish National Annex to Eurocode 1 (I.S. EN 1991-1-4), wind velocities along Irish coastal belts frequently reach peak dynamic pressures ($q_p$) exceeding 1.6 kN/m² in Zone 1 regions. As wind hits an industrial facade, it accelerates vertically up the building elevation, separating at the sharp leading edge of the parapet. This produces localized suction vortexes along corner zones (Zone F and Zone G) that can exert severe uplift forces on capping flashings.
Our bespoke architectural parapet capping profiles solve this through continuous folded hook cleats (standing lock strips) combined with double-sloped fall angles (minimum 1:40 inward fall toward the roof deck). By eliminating exposed top fixings and integrating concealed marine-grade stainless steel spring clips, our systems accommodate high thermal movement while resisting severe negative wind suction up to 4.2 kN/m² without joint dislocation.
Under Technical Guidance Document (TGD) Part L (Conservation of Fuel and Energy - Buildings other than Dwellings), the performance of the building envelope is heavily dictated by non-repeating linear thermal transmittance ($\psi$-values, Psi). Traditional uninsulated solid masonry parapet upstands create massive thermal short-circuits between internal ceiling planes and freezing exterior air.
By coupling continuous PIR or Non-Combustible Stone Wool insulation cores directly behind the vertical upstand flashing and underneath the metal coping bracket, our systems achieve linear thermal bridging coefficients as low as $\psi \le 0.04\text{ W/m}\cdot\text{K}$. This ensures that the internal surface temperature factor ($f_{Rsi}$) consistently stays above the critical 0.75 threshold, preventing mould formation and interstitial condensation inside data halls, pharmaceutical cleanrooms, and food processing plants.
Met Éireann records annual driving rain indexes exceeding 1,200 mm/year across western coastal tracts. Driven by 80 km/h winds, rainwater penetrates minute overlaps via capillary tension. Our CNC-folded flashings incorporate precision eagle-beak drip terminations with a minimum 40mm projection clear of the finished facade line, dual-hemmed capillary break troughs, and full vulcanised EPDM butyl gasketed interlocks that physically break water surface tension before moisture can bridge internal membranes.
Tailored flashing details built to perform in mission-critical facilities across the 26 counties.
FM Global Class 1 roof perimeter performance. Our dual-sealed aluminium copings with conductive earthing straps secure server facility roofs against sudden pressure differentials, ensuring zero moisture intrusion above critical server infrastructure.
Severe coastal atmospheric conditions (ISO 12944 C5-M). Marine-grade Qualicoat Class 2 powder-coated copings and 316 stainless steel substrate flashings resist chemical plant emissions, maritime fog, and aggressive saline coastal corrosion.
Integrating directly with high-density PIR and PUR insulated sandwich panels, our parapet trim systems prevent thermal leakage at cold room upstands, maintaining strict HACCP and food hygiene environments without moisture condensation.
Continuous modular parapets up to 6.2m length reducing joint frequency by 40%. Rapid mechanical installation cuts site crane hours during unpredictable Irish winter weather, guaranteeing rapid building dry-in milestones.
Standardised, factory-notched clip-on copings engineered for modern methods of construction (MMC). Pre-assembled parapet modules drop directly onto cold-formed steel frames with millimetre accuracy.
Aesthetic lead-look matte anthracite grey EPDM and architectural alu-zinc profiles matching traditional stone architecture, while delivering modern 100% lead-free, non-toxic environmental compliance.
Selecting the optimal material gauge, coating class, and thermal build-up for the project location and exposure life.
| Flashing Substrate | Typical Gauge | Reaction to Fire (EN 13501-1) | Durability / ISO 12944 | Recommended Project Location | Thermal Movement |
|---|---|---|---|---|---|
| Architectural Grade Aluminium (1050/3003) | 1.5mm – 3.0mm | Class A1 Non-Combustible | C4 to C5-M (Marine Powder Coated) | Coastal, Pharma, Data Centre perimeters | 2.4 mm/m @ $\Delta 50^\circ\text{C}$ (Needs slotted brackets) |
| Plastisol Coated Galvanised Steel | 0.7mm – 1.0mm | Class A2-s1, d0 | C3 Urban / Inland Industrial | Inland logistics warehouses (M50, Midlands) | 1.2 mm/m @ $\Delta 50^\circ\text{C}$ (High rigidity) |
| Alu-Zinc Coated Structural Steel (AZ185) | 0.6mm – 0.8mm | Class A1 Non-Combustible | C4 Industrial / High UV | Commercial retail units, manufacturing sheds | 1.3 mm/m @ $\Delta 50^\circ\text{C}$ (Self-healing cut edges) |
| Lead-Free EPDM Butyl Hybrid Membrane | 1.2mm – 2.0mm | Class B-s2, d0 | 35+ Years UV Stability | Stepped cavity trays, chimney & parapet saddles | Extremely elastic (>300% elongation at break) |
| Composite Insulated Flashing Saddle | 0.7mm Steel + 50mm PIR | B-s1, d0 / Rockwool A1 | C3 to C5 depending on skin | Cold storage, food processing envelopes | Composite rigidity (Zero internal cold bridge) |
How tightening regulations, nZEB net-zero goals, and supply chain rationalisation are changing the specification landscape in Ireland.
Following post-Grenfell regulatory shifts across the UK and Ireland, external wall cavities and parapet perimeters over 15 metres require non-combustible (Euroclass A1 or A2-s1, d0) mineral wool fire barriers. Designers are switching from combustible polymer-based details to continuous stone wool upstand cores and solid aluminium flashings.
Nearly Zero Energy Buildings (nZEB) standards mandate verified air-tightness levels below 3.0 m³/(h·m²) at 50 Pa. Parapet flashings are no longer purely rainwater sheds; they serve as critical terminations for continuous airtight vapor control layers (VCL), requiring integrated factory-applied butyl seal strips.
With environmental and health directives discouraging the use of traditional heavy lead in both commercial and residential developments, Irish contractors are standardising on multi-layer aluminium-composite and EPDM butyl flashing rolls that are 60% lighter, non-toxic, and 100% recyclable.
Tier-1 Irish main contractors require IFC/Revit BIM objects with pre-calculated Psi values and thermal boundary conditions. Parapet assemblies with accredited BIM libraries accelerate planning permissions and BCAR (Building Control Amendment Regulations) sign-offs.
Essential guidance for Quantity Surveyors, Facade Engineers, and Main Contractors procuring parapet envelopes in Ireland.
Combining industrial-scale production volume with bespoke architectural precision for critical envelopes.
We do not just fabricate edge trims. As a major manufacturer of continuous PIR/PUR and Rockwool sandwich panels, cold-formed structural Z & C purlins, and composite decking sheets, we engineer the entire parapet assembly as a unified, mathematically validated envelope system.
With massive automated roll-forming and lamination lines, our facilities deliver the volume and consistency required by hyperscale commercial developments, eliminating single-source supply chain bottlenecks and shielding contractors from local material shortages.
Our manufacturing and quality assurance frameworks operate strictly under ISO 9001:2015, ISO 14001, and EN standards. Every flashing profile undergoes automated optical gauge scanning, cross-hatch coating adhesion checks, and salinity resistance trials.
Whether you require bespoke CAD/BIM parapet details, wind uplift calculation reviews, or full-scale quotation for industrial roofing profiles, our technical engineering desk is ready to support your project team.
Our sales engineers respond to project questions during working hours (GST+4).