Zinc, Copper & Aluminium Standing Seam MS460 roofing system. Met-Seam® Roof Drainage (Zambelli) PLULINE® Guttering and Stubai Tools. FALZONAL® is ideal for folding flashings and complex details it can also be used for rain-proof double-skin, rear-ventilated roof constructions, or single-skin roof constructions without rear-ventilation. Falzonal is available in different surface finishes: Uni and metallic colours as well as copper, zinc or titanium imitations. It comes in 40 standard colours in 5 colour groups each with its own pricing band.The next time you are in Belfast city centre take the lift to the top of the glass dome in Victoria Square shopping complex and look out over the FALZONAL® PATINA 2 patinated copper imitation dome supplied by MET-SEAM LIMITED.To meet your reqirements, Met-Seam provide a range of coiled metals direct to seam producers and craftsmen for use in situations were machined panels cannot be applied.