Carbon and evidence

Product Evidence

Generic material record — no manufacturer product attached.

AI-estimated material

Evidence Base

Category estimate

No product evidence is attached to this generic material, so nothing on this card is numerical. The guidance below is qualitative — an AI-assisted category profile — for early design discussion, not for figures.

Next step: request a current product EPD or manufacturer carbon declaration, or swap in a branded product that holds one.

What's missing (3)

•No current product EPD is recorded.
•No quantified carbon result is recorded.
•No product-specific circularity or material-health claims are recorded.

Service Life — the B4 Replacement Input

100 years · basis not recorded

≈1 installation over a 60-year building study period.

B4 (replacement) follows the building, not the product: an assessor multiplies replacement cycles by project quantities. This record supplies the service life and does not compute B4.

Design & Specification Notes

Natural stone cladding or rainscreen systems; highly durable with long service life.

Typical Uses

•Facade cladding
•Weather protection
•External accents

Key Performance

Weather-resistant finish for facade exposure.

Specification Actions

•Provide origin and responsible-sourcing evidence (reclaimed/local preferred where possible).
•Prioritise local or reclaimed stone
•Specify screw/bolt fixings so it can be taken apart

Indicative Health & Indoor Air

low Risk

Inert natural material. External use means no indoor air quality impact.

Evidence:No evidence held

Category baseline

No baseline established

No published figure for this category meets the declared unit, lifecycle modules and standard needed to sit alongside product declarations.

Searched and rejected. The Brick Development Association EPD page carries no numerical figures. Secondary sources quote three different per-m² industry averages (26, 27.3 and 32.1 kgCO2e/m²) and two per-tonne ranges (211–242 and 250–350 kgCO2e/tonne) without a consistent scope. The three products here declare per kg, so a per-m² figure is the wrong dimension regardless. Revisit with the BDA Generic Guide, which the association cites as holding the underlying data.

Products in this category

6 products from 4 manufacturers · 291 in this category. Ordered by the evidence each record holds, never by commercial standing.

Specification

Finish: Natural stone cladding
Service life: 100 years