Roofing material

Metal roof

Metal roofing is one of the most common roof types in Finland. Profile steel sheet suits steep pitched roofs and standing seam metal roofing works for almost any pitch. Steel sheet is long-lasting, lightweight and cost-effective.

Lifespan

30–50 yr

Cost level

Weight

4–8 kg/m²

Min. roof pitch

1:7 (konesaumattu) / 1:3 (profiili)

Property comparison

Durability

How long the material lasts under optimal conditions.

Weather resistance

How well the material withstands Finland's weather variations: frost, moisture, UV.

Low maintenance

How little regular maintenance the material requires in normal use.

Value for money

The ratio of lifespan to installation cost — how much you get for your money.

What is a metal roof?

Metal roofing refers to roofing sheets made from steel, aluminium or titanium zinc. It is one of the most common roof types in Finland, with its popularity based on affordability, light weight and versatile applicability. Metal roofing falls into two main categories: profile steel sheet and standing seam metal.

The greatest advantage of metal roofing is its weight — only 4–8 kg/m² — making it an ideal material for replacing older, weaker roof structures. A lightweight covering requires no structural reinforcement.

Profile steel or standing seam?

Profile steel sheet

Lifespan 30–50 years
Price approx. 55–90 €/m² installed
Requires min. 14–18° pitch
Surface coating renewed every 10–15 years
Most common and affordable metal type

Standing seam metal

Lifespan 50–100+ years
Price approx. 110–160 €/m² installed
Works from as low as 6–7° pitch
Nearly maintenance-free when properly installed
Titanium zinc = over 100-year lifespan

Metal roofing material options

The most common metal roofing material in Finland is galvanised steel sheet with a polyester paint or polymer coating to protect against weather. Aluminium is lighter and corrosion-resistant but more expensive. Titanium zinc (an alloy) is the premium choice — it develops a natural protective patina over time and lasts virtually indefinitely when properly installed.

Maintenance and upkeep

Maintenance schedule

Annually Visual inspection, drainage functionality, fixing condition
5 yrs Flashings, penetrations and joints checked
10–15 yrs Profile steel surface coating renewed (generally not needed for standing seam)
As needed Treatment of rusted areas and resealing of flashings

When should you choose a metal roof?

A metal roof is the best choice for budget-conscious construction or replacing an old roof without structural reinforcement. Standing seam metal is also an excellent option for low-pitched roofs where tile or asphalt shingles are unsuitable. It is also an ecological choice — metal is a fully recyclable material.