Accoya Cladding
Cladding of Accoya® — radiata pine modified by acetylation, giving Class 1 durability (≈50 years above ground) and very high dimensional stability without biocides. Takes coatings well or weathers to silver-grey. A long-life timber cladding from FSC-certified fast-grown pine.
Carbon and evidence
Product Evidence
Evidence currently held for the Accoya product record.
Recorded Carbon Result
A1–A3 GWP-total per m² of cladding, per EPD (acetylation offsets biogenic storage)
A1–A3 covers raw-material supply, transport to manufacture and manufacturing. It is product-stage information, not a whole-life result.
Environmental Product Declaration
EPD recorded- Coverage
- Representative product
- Declared unit
- 1 m² cladding (15 mm planks + spruce framing + fasteners)
- Programme
- Self-published EPD (LCA by Agrodome B.V.)
- Registration
- Not recorded
- Standard
- EN 15804+A2 (ISO 14025 Type III)
- Valid until
- 2027-02-18
- Verification
- Manufacturer declared
ISO 14025 Type III EPD; the document states independent third-party verification, but carries no programme registration number (self-published via Agrodome). A1–A3 is low-positive, not negative like raw timber: acetylation (fossil A1 = 11.8) roughly cancels the biogenic storage (−9.98). Long service life is the trade-off.
Carbon profile
kgCO2e per 1 m² cladding · each bar starts at zero · local scale
A1-A3 product
2.24
A4-A5 site*
-1.29
B use
—
C end of life
10.5
D reuse / recycling
-0.744
End of life is the largest of the modules this EPD declares.
Reported GWP Modules
Displayed as stored; modules are not added together here.
A1–A3
2.24 kgCO₂e
per 1 m² cladding
A4*
0.387 kgCO₂e
per 1 m² cladding
A5*
-1.68 kgCO₂e
per 1 m² cladding
C1
0 kgCO₂e
per 1 m² cladding
C2
0.15 kgCO₂e
per 1 m² cladding
C3
7.85 kgCO₂e
per 1 m² cladding
C4
2.47 kgCO₂e
per 1 m² cladding
D
-0.744 kgCO₂e
per 1 m² cladding
Upfront Carbon (A1–A5)*
0.947 kgCO₂e per 1 m² cladding
A1–A3 2.24 + A4 0.387 + A5 -1.68 · as declared
Service Life — the B4 Replacement Input
60 years · EPD reference service life
The declaration's reference service life is 60 years, attributed to the manufacturer and conditional on the recommended maintenance schedule. Accoya warrant the cladding for up to 50 years, which is where this record's previous figure came from.
≈1 installation over a 60-year building study period.
3 claims and 2 certifications are held in the staging record but not presented as product evidence because an exact public source has not yet been mapped.
Comparison Status
This result should be displayed for information only and not ranked against another product.
- • The PCR and version are missing.
- • The GWP indicator is missing.
- • The carbon result is not linked to an evidence source.
- • The EPD is not linked to an evidence source.
Evidence Gaps
- •EPD registration number is missing.
- •3 sustainability claims are withheld because exact public evidence is not mapped.
- •2 certifications are withheld because exact public evidence is not mapped.
Design & Specification Notes
Qualitative notes for early design discussion. Not product-specific EPD evidence, and not a basis for numerical comparison.
Cladding of Accoya® — radiata pine modified by acetylation, giving Class 1 durability (≈50 years above ground) and very high dimensional stability without biocides.
Typical Uses
- •Facade cladding
- •Weather protection
- •External accents
Key Performance
Weather-resistant finish for facade exposure.
Specification Actions
- •Confirm FSC or PEFC certification for all timber products.
- •Request chain-of-custody documentation from supplier.
- •Confirm the current EPD covers the selected product, finish and manufacturing route.
Indicative Health & Indoor Air
Acetylated timber (acetic-acid odour when freshly cut, dissipates); no biocides. Standard cutting-dust precautions.
Specification
- Range
- Accoya wood cladding
- Collection
- Accoya Cladding
- Finish
- Acetylated modified-timber cladding
- Service life
- 60 years