Lignacite ECO 70

A 7.3 N/mm² loadbearing block with at least 70% recycled and secondary aggregate, made in Suffolk by a family firm that has been putting biomass in its mix since the 1940s — "Lignacite" is lignum plus aggregate. The recycled content is the headline, but the declaration tells a subtler story: the block holds 2.96 kg of biogenic carbon per m² of wall, takes up CO₂ by carbonation in use (a declared negative B1), and hands the biogenic store back if the block is crushed and the wood content oxidised at end of life. Its declared A1–A3 is marginally HIGHER than ECO 50’s (6.81 vs 6.50 kgCO2e/m²): more recycled aggregate does not automatically mean less carbon, and the two declarations are recorded as printed rather than ranked by their badges.

Manufacturer page
Lignacite Lignacite ECO 70

Carbon and evidence

Product Evidence

Evidence currently held for the Lignacite product record.

Lignacite

Recorded Carbon Result

6.81kgCO₂e/m²

A1–A3 GWP-total per m² of 100 mm wall (149 kg). The figure is net of 10.9 kgCO2e biogenic carbon held in the block (GWP-fossil A1–A3 is 17.7); carbonation adds a further declared B1 credit of -1.31 in use, and C3+C4 return most of the biogenic store (+11.55) if the block is crushed at end of life.

Indicator: GWP-total

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
Specific product
Declared unit
1 m² 100 mm block wall, 149 kg
Programme
EPD Hub
Registration
HUB-2921
Standard
EN 15804:2012+A2:2019, ISO 14025, ISO 21930
Valid until
2030-01-30
Verification
Third-party verified

Product-specific declaration for the 100 mm 7.3N block; the 140 mm formats carry their own EPDs on the same page.

Read the EPDSource: Core environmental impact indicators table (EN 15804+A2, PEF VP-029-C), GWP rows

Carbon profile

kgCO2e per 1 m² of 100 mm wall (149 kg) · each bar starts at zero · local scale

A1-A3 product

6.81

A4-A5 site*

0.146

B use

-1.31

C end of life

12.9

D reuse / recycling

-1.08

End of life is the largest of the modules this EPD declares.

adds carbon stores or removes EPD scenario* reuse/recycling potential (D)
* EPD transport and installation scenario, not this project's. Module D shows potential impacts or benefits from reuse, recovery or recycling after the product's assessed life. It is reported separately and never added to A-C. Do not compare bar lengths between materials. Each chart may use a different scale and declared unit.

Reported GWP Modules

Displayed as stored; modules are not added together here.

A1–A3

6.81 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

A4*

0.123 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

A5*

0.0233 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

B1

-1.31 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

C1

0.55 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

C2

0.758 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

C3

9.21 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

C4

2.34 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

D

-1.08 kgCO₂e

per 1 m² of 100 mm wall (149 kg)

* A4/A5 are EPD scenarios, not project-specific results. Module D is outside the A–C system boundary and is not added to A–C. Module nomenclature follows BS EN 15978 / EN 15804. Declared values are suitable as inputs to a whole life carbon assessment under the RICS Professional Standard (2nd edition); this panel is not an assessment.

Upfront Carbon (A1–A5)*

6.96 kgCO₂e per 1 m² of 100 mm wall (149 kg)

A1–A3 6.81 + A4 0.123 + A5 0.0233 · GWP-total, as declared

* Includes the EPD’s A4/A5 scenario assumptions, not project-specific transport or installation. This is the aggregation the proposed Part Z applies upfront limits to. The A1–A3 figure includes declared biogenic storage of -10.9 kgCO₂e; Part Z aggregates upfront carbon excluding sequestered carbon, which is the assessor's adjustment to make.

Service Life — the B4 Replacement Input

100 years · EPD reference service life

Reference service life of 100 years, declared in the EPD.

≈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.

Sourced Product Claims

  • At least 70% recycled and secondary aggregateThird-party verifiedSource
  • Absorbs 1.31 kgCO2e/m² by carbonation in use (module B1)Third-party verifiedSource
  • Third-party verified EPD, valid to 2030-01-30Third-party verifiedSource

Evidence Sources

Third-party verified

Comparison Status

This result should be displayed for information only and not ranked against another product.

  • • The carbon result is not linked to an evidence source.
  • • 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.

A 7.

Typical Uses

  • •Primary frame
  • •Long-span elements
  • •Load-bearing supports

Key Performance

High load-bearing capacity for primary frame.

Specification Actions

  • •Specify GGBS/PFA cement replacement (target: 50%+ replacement).
  • •Request EPD showing embodied carbon per m3.
  • •Calculate transport distances for primary materials.

Indicative Health & Indoor Air

low Risk
Evidence:Third-party verified

Specification

Range
Lignacite ECO
Finish
Medium-dense loadbearing concrete block, 7.3 N/mm², 100 mm
Service life
100 years
Country of manufacture
United Kingdom

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