Lignacrete 100 mm Solid 17.5 N Concrete Blocks - High Density Robust Loadbearing Units
Verified by manufacturer 1 day ago
BSI Kitemark
Certificate type
Part of a range of high density, robust, loadbearing units, suitable for internal and external walls.
Application
Lignacrete 17.5N blocks are intended for use in walls that require high loadbearing capacity. Applications include:
- The inner leaves of external cavity walls
- Internal walls, including fire break walls
- Separating walls, including those conforming to Robust Details acoustic specifications
- Below ground
Description
Lignacrete 17.5N are dense, high-strength blocks, ideal for walls requiring a high loadbearing capacity. Manufactured to BS EN 771-3, they are extremely robust and durable, with a technical performance that will meet most requirements.
Features and benefits:
- Exceptional loadbearing and robust
- High strength
- For use internally and externally, above and below ground
- High levels of air tightness, sound insulation and fire resistance
- Suitable for a wide range of applications, including separating and partition walls
- 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
Lignacrete blocks are medium grey to buff in colour. They are capable of being finished with all recognised treatments, including plaster, drylining and render, as well as cladding treatments.
General information
Color | Grey Guidance for specification option: Paint grade and standard. Fair faced - natural. |
Material | Concrete Aggregate Manufacturer guidanceDense aggregate concrete. |
Shape | Rectangle |
Length | 440 mm |
Width | 100 mm |
Height | 215 mm |
Uniclass | |
CAWS | E60/297 Proprietary infill blocks F10/18 Concrete facing blockwork F10/355 Concrete common blockwork |
SKU Code | D10017 |
Product range |
Specification data - Aggregate concrete blocks
Classification data | |
Standard | To BS EN 771-3. |
Block description | Fair-faced block. Guidance for specification option: For locations requiring a consistent colour and close textured block face. Paint-grade block. Guidance for specification option: For locations where a consistent close textured face is required as a background for direct painting. Common block (standard). Guidance for specification option: For locations where the surface will not be visible e.g. for plastering or use below ground. Manufacturer guidanceHigh density, robust, loadbearing units for internal and external walls. |
Appearance | Medium grey to buff in colour with a texture. |
Configuration | Group 1. Guidance for specification option: Solid. |
Compressive strength | |
Mean value | 17.5 N/mm². |
Category | 1. |
Thermal conductivity | 1.33 W/m·K at 3% moisture content (internal use), 1.43 W/m·K at 5% moisture content (external use). |
Thermal resistance | 0.075 m²K/W at 3% moisture content; 0.069 m²K/W at 5% moisture content. |
Work sizes (length x width x height) | 440 x 100 x 215 mm. |
Tolerance category | D1. |
Density | |
Net dry density | 2000 kg/m³. |
Reaction to fire | Class A1. |
Water vapour permeability | 5/15 µ. |
Moisture movement | <0.6 mm/m. |
Weighted sound reduction index, Rw | Plaster finish: 51 dB; plasterboard on dabs: 49 dB; paint finish: 48 dB. |
Fire resistance | Non-loadbearing wall (criteria E1): 3 hours; loadbearing wall (criteria RE1): 2 hours. Guidance for specification option: See manufacturer's literature for further examples. |
Third-party certification | BSI Kitemark approved KM 09694. |
Unit weight | 18.9 kg. Guidance for specification option: Laid weight including mortar: 198 kg/m². |
Sustainability data
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
Material | Concrete Aggregate Manufacturer guidanceDense aggregate concrete. |
Recyclability | 100% |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 100 % |
Expected Life | 100 year Guidance for specification option: When properly constructed, the durability of walls built using Lignacrete High Strength products will match that of walls 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. |
Product certifications
BSI Kitemark
BSI Kitemark Certificate
Literature
Literature type
BES 6001 Certificate
Lignacrete High Strength Datasheet
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