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

40 years · basis not recorded

≈2 installations 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

FSC timber boards or battens used as ventilated cladding; renewable and visually warm.

Typical Uses

•Facade cladding
•Weather protection
•External accents

Key Performance

Weather-resistant finish for facade exposure.

Specification Actions

•Provide FSC or PEFC chain-of-custody proof (and origin details if reclaimed).
•Verify preservative treatment is non-toxic
•Specify ventilated cavity design

Indicative Health & Indoor Air

low Risk

•preservatives

Verify preservative treatment is non-toxic. External use minimises exposure.

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. No published sector average for timber cladding at A1–A3 per m² was found; results returned individual product EPDs only. Building a baseline from the products already in this catalogue would place roughly half of them below it by construction — the circularity trap recorded in CARBON_BASELINE_SCHEMA.md §4 — so that route is not taken here.

Products in this category

5 products from 4 manufacturers · 10 in this category. Ordered by the evidence each record holds, never by commercial standing.

Specification

Finish: FSC timber boards or battens
Service life: 40 years