Metals

Zinc.

Zinc has a significant CO₂ footprint but lasts 60–100 years and is almost fully recyclable. Specify recycled zinc from European producers where possible.

Key Figures

Carbon Footprint (GWP): 3.1 kg CO₂-eq/kg
Density: 7100 kg/m³
Expected Lifespan: 60–100 år

What is zinc?

Zinc is a traditional roofing metal used for roofing, gutters, flashings, and facade trim. It is corrosion-resistant and forms a natural protective patina. Lifespan up to 100 years. The carbon footprint is significant, but zinc is one of the most recycled metals — over 95% is recycled.

Carbon Footprint Compared

Zinc ← this material 3.1 kg CO₂/kg

Copper 3.5 kg CO₂/kg

Stainless steel 5.5 kg CO₂/kg

Aluminium 8.24 kg CO₂/kg

Negative carbon footprint (green) indicates carbon storage. Data based on EPD averages from ECO Platform and estimates per EN 15804.

Typical Applications

check_circle Roofing (standing seam)
check_circle Gutters and downpipes
check_circle Flashings and copings
check_circle Facade cladding (modern architecture)

In Renovation

Zinc is used in renovation for replacing gutters, flashings, and trims. It is easy to adapt and cuts easily with tin snips. Old zinc is melted and recycled.

Questions about zinc

What is the difference between natural zinc and titanium zinc?

Titanium zinc (VMZINC, RHEINZINK) is alloyed with titanium and copper, giving better formability and uniform patina. Natural zinc is pure zinc. Most modern zinc products are titanium zinc.

Does zinc require maintenance?

Very little. Zinc forms its own protective zinc oxide/carbonate layer (patina) that prevents further corrosion. Gutters should be cleaned of leaves and debris once a year.

Is zinc sustainable?

Zinc is a naturally occurring element that can be recycled indefinitely without quality loss. Over 95% of spent zinc is recycled in Europe. Production CO₂ is however significant.

What is zinc's expected lifespan?

60–100 years in Northern European climate. Coastal and urban environments with pollution can reduce lifespan. Correct drainage design and flashings are crucial for long lifespan.

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