Lignacrete Hollow 7.3N 215mm
A 215 mm hollow block for single-leaf structural walls, where the voids take reinforcement and fill. At 25.3 kgCO₂e/m² it is the heaviest and one of the higher-carbon options here, but it is doing the work of a thicker wall — compare it against a cavity build-up rather than against a 100 mm block.
Carbon and evidence
Product Evidence
Evidence currently held for the Lignacite product record.
Recorded Carbon Result
A1–A3 GWP-total per m² of 215 mm wall (233 kg). Essentially all fossil; this block holds no meaningful biogenic carbon. Carbonation adds a further declared -1.48 in use (B1).
Indicator: GWP-total
Lignacrete Hollow 7.3N 215mm (HUB-0143)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 215 mm block wall, 233 kg
- Programme
- EPD Hub
- Registration
- HUB-0143
- Standard
- EN 15804:2012+A2:2019, ISO 14025, ISO 21930
- Valid until
- 2027-10-07
- Verification
- Third-party verified
Lignacrete Hollow 7.3N 215mm, 7.3 N/mm², 215 mm. Declared per square metre of wall, so it is directly comparable with Lignacite’s other blocks.
Carbon profile
kgCO2e per 1 m² of 215 mm wall · each bar starts at zero · local scale
A1-A3 product
25.3
A4-A5 site*
1.85
B use
-1.48
C end of life
2.86
D reuse / recycling
-1.51
Reported GWP Modules
Displayed as stored; modules are not added together here.
A1–A3
25.3 kgCO₂e
per 1 m² of 215 mm wall
A4*
1.83 kgCO₂e
per 1 m² of 215 mm wall
A5*
0.0243 kgCO₂e
per 1 m² of 215 mm wall
B1
-1.48 kgCO₂e
per 1 m² of 215 mm wall
C1
0.771 kgCO₂e
per 1 m² of 215 mm wall
C2
1.09 kgCO₂e
per 1 m² of 215 mm wall
C3
0.749 kgCO₂e
per 1 m² of 215 mm wall
C4
0.246 kgCO₂e
per 1 m² of 215 mm wall
D
-1.51 kgCO₂e
per 1 m² of 215 mm wall
Upfront Carbon (A1–A5)*
27.2 kgCO₂e per 1 m² of 215 mm wall
A1–A3 25.3 + A4 1.83 + A5 0.0243 · GWP-total, as declared
Service Life — the B4 Replacement Input
100 years · EPD reference service life
The declaration states a 100-year reference service life.
≈1 installation over a 60-year building study period.
Evidence Sources
Comparison Status
This result should be displayed for information only and not ranked against another product.
- • 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 215 mm hollow block for single-leaf structural walls, where the voids take reinforcement and fill.
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
Specification
- Range
- Lignacrete
- Finish
- Hollow dense concrete block, 215 mm
- Thickness
- 215 mm
- Service life
- 100 years
- Country of manufacture
- United Kingdom