Mass-based sound insulation from outside noise, a side benefit of thermal-mass wall choices.
Cost
Medium
Upkeep
None
Lifespan
Matches structure lifespan (mass is a permanent material property, not a wearing component)
Embodied carbon
Medium
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.