Impact-resistant roofing

Metal or fibre-cement roofing rated for hail impact.

Cost

Medium

Upkeep

Occasional

Lifespan

Metal roofing: 40-70 years; fibre-cement: 30-50 years

Embodied carbon

Medium

Space / material use

Low

Output timing

None

Skill to repair

Basic

Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.

Inputs

none

Outputs

none

Sources

• Roofing material industry durability consensus (general metal/fibre-cement roofing lifespan data)

What this page does not tell you

No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.