B2B Trade Supply. Ireland.
We manufacture custom aluminium roof flashings in Ireland. Our roofline pressings are folded to order to ensure high weatherproofing security at critical boundaries.
Silicone is not a building material. Precision over speed.
Project Profile
We fabricate B2B components at our Dublin facility. Standard 2mm marine-grade alloy ensures durability in coastal environments. Qualicoat powder coating provides RAL-matched weather protection. Fast nationwide delivery in 3 to 5 working days. All measurements verified through the app are built to a 0mm fabrication tolerance.

// Specification Data
Our roof flashings are fabricated from raw two millimetre marine alloy. They protect parapets, valleys, and chimneys from water ingress. All sections are bent on precision CNC machinery to match the drawings of specifiers. We weld internal and external corner units in our workshop to guarantee watertight junctions. This is vital for the integrity of flat and pitched roof interfaces.
// Specification Data
We fold apron flashings, valley trays, and step flashing details to order. The systems connect seamlessly with standard roofing membranes and drainage gutters. The profiles feature back folds and turn downs to prevent wind driven rain from penetrating behind the masonry line.
// Specification Data
Roof flashings are subjected to extreme temperature fluctuations. We design our joints with slip joints or expansion splice plates. This allows the sections to expand and contract freely without distorting or breaking the sealant seals, preventing premature weathering leaks.
// Specification Data
Junction corners are the most common leak points in roofing flashings. We pre weld all internal and external corners in our workshop using TIG welding processes. This ensures a continuous metal skin around roof projections, eliminating reliance on silicone sealant at site joints.
// Specification Data
We apply Qualicoat powder coatings in any standard RAL color to ensure UV and corrosion resistance. The powder coated layer provides long term color retention that matches the roof tiles, facade panels, and matching rainwater gutters.
Technical FAQ
We fabricate roof flashing profiles in lengths up to three metres to minimize site joints.
Yes, we fold valley and boundary gutters to any width, depth, and angle to match structural designs.
Yes, our solid aluminium flashings are non-combustible and satisfy building regulations for commercial roofing.
We fabricate and deliver custom roof flashing orders nationwide within three to five working days.
The flashing is turned into a raked mortar joint by twenty-five millimetres. It is mechanically secured with lead wedges and finished with high performance polymer sealant.
Yes, we press matching heavy-duty galvanized steel or aluminium fixing brackets to support flashing cappings and resist wind uplift.
Related Fabrication
Visit CILLS.ie Flashing Details for detailed retail and system profile designs.
// CNC Production
Order standard or custom architectural metalwork profiles. Fabricated to order and delivered nationwide across Ireland.