Lignacite GP 140 mm 3.6 N Concrete Blocks
Verified by manufacturer 2 days ago
General purpose, medium density concrete blocks.
Application
Suitable for use in commercial and housing projects.
Can be used to construct internal walls in commercial, industrial, leisure, and residential buildings. The blocks can be used for the following:
- The inner and outer leaves of external cavity walls;
- Internal walls including fire break walls;
- Separating walls including those conforming to Robust Detail specifications;
- External and internal walls below ground (3.6 N/mm² blocks can be used in both inner leaf and internal walls; 7.3 N/mm² blocks to other locations).
Lignacite GP blocks are manufactured with a distinctive scratched surface to aid the application of plaster and render finishes. The blocks can accommodate drylining, dense plaster, finishing coats and external rendering.
Description
Lignacite GP medium density concrete blocks are robust and durable, making them the perfect choice for walls built above and below ground. Manufactured to BS EN 771-3, their textured faces provide an excellent surface for mortars, renders and plasters. They also provide a strong base for holding fixings.
Lignacite GP blocks contain a proportion of recycled materials, and their sustainability performance has been verified through an Environmental Performance Declaration (EPD).
Features and benefits:
- Also available in 100 mm thickness (specified separately).
- Also available in mean unit strengths of 7.3 or 10.4 N/mm², in both in 100 or 140 mm thicknesses (specified separately).
- Robust and durable.
- Good surface key for the direct application of plasters and renders.
- For use internally and externally, above and below ground.
- High levels of air tightness, sound insulation and fire resistance.
- Provides a strong background for holding fixings.
- Credits available under BREEAM.
- BSI Kitemarked to BS EN 771-3.
- Can be used to satisfy the requirements of Part L of the Building Regulations.
- Good technical performance, high recycled content
General information
Color | Grey |
Finish | Grooved |
Material | Concrete |
Shape | Rectangle |
Length | 440 mm |
Width | 140 mm |
Height | 215 mm |
Uniclass | |
CAWS | E60/297 Proprietary infill blocks F10/18 Concrete facing blockwork F10/355 Concrete common blockwork |
SKU Code | G1403 |
Product range |
Specification data - Aggregate concrete blocks
Classification data | |
Standard | To BS EN 771-3. |
Block description | Medium density, load bearing block for general purpose walling applications. |
Appearance | Scratched surface to aid the key of plaster and render finishes. |
Configuration | Group 1. |
Compressive strength | |
Mean value | 3.6 N/mm². |
Category | 1. |
Thermal conductivity | 0.47 W/m·K at 3% moisture content (internal use); 0.51 W/m·K at 5% moisture content (external use). |
Thermal resistance | 0.298 m²K/W at 3% moisture content; 0.274 m²K/W at 5% moisture content.. |
Work sizes (length x width x height) | 440 x 140 x 215 mm. |
Tolerance category | D1. |
Density | |
Net dry density | 1450 kg/m³. |
Reaction to fire | Class A1. |
Water vapour permeability | 5/15 µ. |
Moisture movement | <0.5 mm/m. |
SpecificHeatCapacity | 1000 J/kg/K. |
Weighted sound reduction index, Rw | Rw 48–49 dB (dependent on application). Guidance for specification option: Plaster finish: 49 dB; plasterboard on dabs: 48 dB. |
Fire resistance | Non-loadbearing wall (criteria E1): 3 hours; loadbearing wall (criteria RE1): 4 hours. |
Third-party certification | BSI Kitemark approved. |
Unit weight | 19.6 kg. Guidance for specification option: Laid weight including mortar: 210 kg/m². |
Sustainability data
Contains Red List materials | No |
Country of material origin | Europe |
Country of product manufacture | United Kingdom |
Material | Concrete |
| Carbon dioxide equivalent | |
Carbon dioxide equivalent, as defined in BS EN 15804 Self-declared | |
Stage Normalised unit (kg CO₂ eq/kg) Declared unit (kg CO₂ eq/m²) Stage:A1–A3 ('Production stage') Normalised unit : 0.11 (kg CO₂ eq/kg) Declared unit : 22.4 Value guidance: A1-A3Rounded down to two decimal places; manufacturer's value is 0.144 kg·CO2e/kg. This figure is derived from the carbon value as per the EPD divided by the unit mass. | |
Recyclability | 100% |
Expected Life | 100 year Guidance for specification option: When properly constructed, the durability of walls built using Lignacite products will match that of traditional masonry and will fulfil their intended function for the life of the building in which they have been installed (typically 100 years). The blocks themselves will require no maintenance. Maintenance for walls will normally include the replacement of sealant in movement joints and at junctions / openings. Repointing for walls that are exposed to the elements may be necessary towards the end of their service life. |
Literature
Lignacite GP Range Data Sheet
Case studies
The Paddocks
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