Lignacrete 290 x 215 x 140 mm Midi 7.3 N Concrete Blocks - High Density Robust Loadbearing Units
Verified by manufacturer today
BSI Kitemark
Certificate type
Part of a range of high density, robust, loadbearing units, suitable for internal and external walls.
Application
Lignacrete Midi blocks can be used for all general-purpose walling applications below and above ground:
- Inner leaves of cavity walls.
- Internal walls, including fire break walls.
- Below ground.
Description
Lignacrete Midi are 140mm sold units with a face size of 290mm x 215mm. They have been developed for easier handling while providing all the performance associated with conventional-sized solid blocks.
There are options to specify standard or paint grade finishes, and with unit weights of less than 20kg (the recommended maximum weight for manual handling), Midi blocks are the perfect choice for commercial and industrial projects.
Features and benefits:
- Loadbearing and robust.
- Convenient to handle.
- For use internally and externally, above and below ground, including separating and partition walls.
- High levels of air tightness, sound insulation and fire resistance.
- 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. Paint Grade blocks can be directly painted. Consult manufacturer for further finish recommendations.
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 | 290 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 | MIDI7 |
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 | 7.3 N/mm². |
Category | I. |
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 | 0.105 m²K/W at 3% moisture content; 0.097 m²K/W at 5% moisture content. |
Work sizes (length x width x height) | 290 x 140 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: 55 dB; plasterboard on dabs: 53 dB; paint finish: 53 dB. |
Fire resistance | Non-loadbearing wall (criteria E1): 4 hours; loadbearing wall (criteria RE1): 3 hours. Guidance for specification option: See manufacturer's literature for further examples. |
Third-party certification | BSI Kitemark approved KM 09694. |
Air tightness | No finish: 3.36 m³/h/m²; paint finish (one side): 1.72 m³/h/m². |
Unit weight | 17.5 kg. Guidance for specification option: Laid weight including mortar: 279 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% |
Expected Life | 100 year Manufacturer guidanceWhen properly constructed, the durability of walls built using Lignacrete products will match that of traditional masonry. This means that they 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 actions such as 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. |
Product certifications
BSI Kitemark
BSI Kitemark Certificate
Literature
Literature type
Lignacrete Midi Datasheet
BES 6001 Certificate
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