Northcot Brick
Cotswold bricks made at Blockley in a Victorian pan mill and a Hoffman kiln — a continuous ring kiln of a type almost extinct in Britain — fired on anthracite. That process is why the declaration reads 697 kgCO₂e per tonne, roughly three times an extruded brick. It is not an error and it is not hidden: it is the real cost of a handmade heritage brick, and on a conservation job where nothing else will match the existing work it is the honest number to specify against.
Carbon and evidence
Product Evidence
Evidence currently held for the Northcot Brick product record.
Recorded Carbon Result
A1–A3 GWP-total per tonne of brick. GWP-fossil is 697. For scale, UK independents in this catalogue run from −15.4 (an unfired earth block) through 106 for a wood-fired brick to 697 for a Hoffman-kiln handmade one — "clay brick" is not one number, and the firing route is what sets it.
Indicator: GWP-total
Northcot Brick (EPD-IES-0028131)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
- Product family
- Declared unit
- Not recorded
- Programme
- EPD International (The International EPD® System)
- Registration
- EPD-IES-0028131
- Standard
- EN 15804:2012+A2:2019/AC:2021, ISO 14025
- Valid until
- 2031-02-08
- Verification
- Third-party verified
Made at Blockley, Gloucestershire. Per-brick masses given in the declaration: 65 mm modern 2.04 kg → 1.42 kgCO2e/brick; 73 mm traditional 2.28 kg → 1.59; handmade 2.21 kg → 1.54.
Carbon profile
kgCO2e per 1 tonne · each bar starts at zero · local scale
A1-A3 product
697
A4-A5 site*
—
B use
—
C end of life
18.6
D reuse / recycling
-18.1
Reported GWP Modules
Displayed as stored; modules are not added together here.
A1–A3
697 kgCO₂e
per 1 tonne
C1
1.87 kgCO₂e
per 1 tonne
C2
15.2 kgCO₂e
per 1 tonne
C3
1.33 kgCO₂e
per 1 tonne
C4
0.18 kgCO₂e
per 1 tonne
D
-18.1 kgCO₂e
per 1 tonne
Sourced Product Claims
- Third-party verified EPD, valid to 2031-02-08Third-party verifiedSource
Evidence Sources
EPD International (The International EPD® System)
Comparison Status
This result should be displayed for information only and not ranked against another product.
- • The declared or functional unit is missing.
- • The EPD is not linked to an evidence source.
Design & Specification Notes
Qualitative notes for early design discussion. Not product-specific EPD evidence, and not a basis for numerical comparison.
Cotswold bricks made at Blockley in a Victorian pan mill and a Hoffman kiln — a continuous ring kiln of a type almost extinct in Britain — fired on anthracite.
Typical Uses
- •Facade cladding
- •Weather protection
- •External accents
Key Performance
Weather-resistant finish for facade exposure.
Typical Service-Life Estimate
100 yearsGeneric estimate for early design discussion; confirm with the manufacturer.
Specification Actions
- •Confirm the current EPD covers the selected product, finish and manufacturing route.
- •Calculate transport distances for primary materials.
- •Document material reuse or reclaimed content percentages.
Indicative Health & Indoor Air
Specification
- Range
- Northcot Brick
- Finish
- Clay facing brick, Hoffman kiln, pan mill
- Country of manufacture
- United Kingdom