Fixed horizontal overhangs (south)

Blocks high summer sun while admitting low winter sun; no moving parts.

Cost

Low

Upkeep

None

Skill to build

None

Lifespan

Matches structure/roof lifespan if built as part of the roof structure (a fixed geometry choice, not a separately wearing component)

Embodied carbon

Low

Space / material use

Low

Output timing

None

Skill to repair

None

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.