Four sloped sides rather than a gable reduce the surface area directly exposed to wind uplift.
Cost
Low
Upkeep
None
Skill to build
None
Lifespan
Matches roof structure lifespan (a form choice, not a separate material)
Embodied carbon
Low
Space / material use
None
Output timing
None
Skill to repair
None
Regulation (FR example)
Part of the structure or footprint: covered by the building permit (permis de construire) for a new dwelling. Rural sites are additionally constrained by the commune's PLU zoning, outside a constructible zone, a new dwelling is generally refused.
Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.
Inputs
none
Outputs
none
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.