Zinc-Titanium and Copper Materials for Architecture
Everything you need to know about the materials we install: zinc-titanium in its various forms (natural, pre-weathered, pigmented, lacquered), rolled copper, and complementary metals.
This page brings together everything you need to know about the materials we install: zinc-titanium in its various forms (natural, pre-weathered, pigmented, lacquered), rolled copper, and the complementary metals — aluminium and stainless steel — used in specific flashings. We work exclusively with sheet from the three major European references (VMZINC, elZinc and RHEINZINK), in accordance with the EN 988 standard, with traceable provenance and certified composition. This is ZincArt's technical reference page — the starting point for choosing, together with you or your designer, the right material for your project.
What is zinc-titanium
The term "zinc" used in construction corresponds, in practice, to a rolled alloy known as zinc-titanium, governed by the European standard EN 988. The base alloy starts with high-purity electrolytic zinc (designation Z1, around 99.995% zinc) to which small percentages of titanium (0.06–0.2 %) and copper (0.08–1.0 %) are added. Titanium improves creep resistance — essential for sheet exposed to the sun that expands and contracts daily. Copper increases hardness and mechanical strength.
This alloy is distinct from the "old zinc" used in the 19th century (almost pure zinc, brittle in cold conditions) and is the only one suitable for modern roofs, facades and decorative elements.
Types of zinc-titanium finish
We work with the full range of finishes available on the European market:
- Natural zinc — rolled sheet with no surface treatment. It appears bright at first and naturally develops its blue-grey patina over months or years, depending on exposure. The preferred solution when you want to see the material's natural evolution.
- Pre-weathered QUARTZ-ZINC® (VMZINC) — a stable light-grey finish achieved at the factory by a controlled chemical process. It eliminates the visual "weathering" phase and offers a uniform colour from day one. Equivalents in other brands: elZinc Slate, RHEINZINK prePATINA blaugrau.
- Pre-weathered ANTHRA-ZINC® (VMZINC) — the dark, graphite-grey version, equally pre-weathered at the factory. Widely used in contemporary architecture for its strong contrast with glass, timber and exposed concrete. Equivalents: elZinc Graphite, RHEINZINK prePATINA schiefergrau.
- PIGMENTO® zinc (VMZINC) — a colour range with mineral pigmentation applied over the pre-weathered finish. Available in blue, brown, green and red. Allows colour combinations without losing the texture of zinc.
- AZENGAR® zinc (VMZINC) — a white pre-weathered finish with a hammered/granular surface. A distinctive, high-visibility solution.
- Bi-lacquered / gold-lacquered zinc — sheet with a polymer coating applied to both faces, suitable when long-term colour stability is required or when in contact with sensitive rainwater.
Copper for roofs and cladding
Rolled copper is the material with the longest historical presence in European architecture — it is on medieval churches, palaces and many iconic contemporary buildings. Supplied in sheet or coil, it evolves visually through three stages: from the initial golden-orange, through dark brown over the years, and ultimately to the characteristic green patina (basic copper carbonate). Far from being a defect, this green layer is an extraordinarily stable protective film that extends the service life of the roof beyond 100 years.
We install copper in main roofs, dome cladding, gutters, downpipes, copings and flashings on restoration works and on new architecture. Copper's natural antibacterial properties are an additional advantage for hospital equipment or sanitary applications.
Other complementary materials
For specific flashings, technical pieces or budget requirements, we also work with:
- Lacquered aluminium — a light, durable sheet, available in a wide RAL colour palette. Suited to facades, gable cladding and roofs where weight is a critical factor.
- Stainless steel (304/316 grade) — used for copings, soldered pieces in aggressive environments (coastal, industrial) and flashings where coexistence with other metals requires a stable galvanic pairing.
- Galvanised and coated steel sheet — cost-effective solutions for outbuildings, lean-tos and non-residential construction.
The choice of the right metal depends on the use, environmental exposure and budget. We always advise our clients on a case-by-case basis.
Standards and certification
All the materials we install comply with specific European standards:
- EN 988 — the European specification for rolled zinc and zinc-alloy sheet and strip for construction, including composition, dimension and tolerance requirements.
- EN 1172 — the equivalent for copper and copper alloys in construction.
- EN/DIN 1179 — defines the characteristics of high-purity electrolytic zinc (Z1 grade) used as the raw material for the zinc-titanium alloy.
Citing these standards is not bureaucratic detail: it is the guarantee that the installed material has factory-verified composition, thickness and mechanical properties. For public projects and works under technical supervision, we provide on request the manufacturers' technical data sheets and declarations of performance.
Technical characteristics of zinc-titanium
For designers and architects, the key reference values are listed here:
| Property | Value |
|---|---|
| Density | 7.2 kg/dm³ |
| Melting point | ~419.5 °C |
| Linear expansion coefficient | 0.022 mm/m/°C (in the rolling direction) |
| Standard thicknesses on site | 0.65 / 0.70 / 0.80 / 1.00 mm |
| Coil widths | 500, 600, 650, 670, 1000 mm |
| Recyclability | 100 %, with no loss of properties |
| Estimated service life | 80 to 100 years (rural), 40 to 70 years (coastal/urban), 30 to 40 years (aggressive industrial) |
The relatively high expansion requires correctly sized expansion joints and respect for minimum pitches (as a general rule, 5 % for standing seam roofs — see details on the pages for zinc and copper roofs and zinc and copper facades).
Sustainability and life cycle
Zinc and copper are 100 % recyclable metals with no loss of properties — an end-of-life sheet can return to the foundry and become new sheet indefinitely. The embodied energy per square metre is low when compared with the 80 to 100-year service life: the environmental cost per year of service is highly favourable. On-site maintenance is virtually nil, eliminating the painting or surface-treatment cycles that other solutions require.
Which material should you choose for your project?
Every project has its own constraints — solar exposure, proximity to the sea, roof pitch, maximum permissible weight, architectural intent, budget. There is no universal "best material": there is the right material for each case.
See also our rainwater drainage services in zinc and copper and our portfolio to see the finishes applied in real-world contexts. Speak to our technical team for a free recommendation.
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