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Lignacite Concrete Blocks

Third party certifications:
  • BSI Kitemark

    Certificate type

Lignacite Ltd

General purpose, fine textured concrete blocks.

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+44 (0)1842 810678 www.lignacite.co.uk
Application

Suitable for use in commercial and housing projects. Fair-faced and paint-grade blocks can be used to construct internal walls in commercial, industrial and leisure buildings. Can be used in the following locations:

  • 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).
  • Infill units to beam and block flooring.
  • Fair-faced blocks are recommended for internal use.

The blocks can accommodate drylining, dense plaster, finishing coats and external rendering. Consult manufacturer for further finish recommendations.

Description

A range of fine textured, loadbearing units, suitable for facing and general purpose applications. Select from a range of sizes, strengths and grades for total design flexibility. The blocks consist of a specially formulated mix which reduces density, producing a solid block under 20 kg unit weight.

The blocks are medium grey in colour with a fine textured surface. Available in a range of sizes, strengths and grades for design flexibility.

Features and benefits:

  • Loadbearing.
  • For use internally and externally, above and below ground.
  • High levels of air tightness, sound insulation and fire resistance.
  • Credits available under BREAAM and Code for Sustainable Homes.
  • CE marked to BS EN 771-3.
  • Can be used to satisfy the requirements of Part L of the Building Regulations.

The mortar type for work above ground level should be designation (iii) / Compressive Class M4. Stronger mixes may be used only with the permission of the designer. Stronger mixes may also be required for work below ground in accordance with PD 6697. Consult manufacturer for details.

Movement joints should be considered in accordance with PD 6697 at approximately 6 m spacings. In areas of concentrated stress, such as those above and below openings, consideration should be given to the use of bed joint masonry reinforcement.

The design of walls should be in accordance with relevant design standards including BS 8103: 2, BS EN 1996-1-1 and the requirements of the Building Regulations.

Application:

Suitable for use in commercial and housing projects. Fair-faced and paint-grade blocks can be used to construct internal walls in commercial, industrial and leisure buildings. Can be used in the following locations:

  • 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).
  • Infill units to beam and block flooring.
  • Fair-faced blocks are recommended for internal use.

The blocks can accommodate drylining, dense plaster, finishing coats and external rendering. Consult manufacturer for further finish recommendations.

General information
Color

Medium grey

Features

For use internally and externally above and below ground, high levels of air tightness, sound insulation and fire resistance

Material

Medium density aggregate concrete

Shape

Rectangular

Size

440 x 215 x 70 mm

440 x 215 x 90 mm

440 x 215 x 100 mm

440 x 215 x 140 mm

440 x 215 x 190 mm

440 x 215 x 215 mm

Uniclass 2015 Aggregate concrete blocks (Pr_20_93_52_01)
Specification data
Product Reference

Lignacite Concrete Blocks

Standard

BSI Kitemark approved to BS EN 771-3

Block description

Fine textured, loadbearing units for facing and general purpose applications

Appearance

Medium grey in colour with a fine textured surface

Configuration

Cellular (Group 2)

Hollow (Group 2)

Solid (Group 1)

Solid SP (Group 1)

140 mm width only. Please note there is a slight colour difference between the traditional block and the Lignacite SP.

CompressiveStrength -
Category

M4

ThermalConductivity

0.111–0.258 m²K/W depending on width

Recycled content

Up to 48%

Tolerance category

D1

Density -
Net dry density

All strengths: 1570 kg/m³; SP: 1450 kg/m³

Reaction to fire

Class A1

Water vapour permeability

5/15 µ

Work sizes (length x width x height)

440 x 75 x 215 mm

Solid only. Unit weight: 11.1 kg.

440 x 100 x 215 mm

Solid only. Unit weight: 14.9 kg.

440 x 140 x 215 mm

Available for all configurations. Unit weight: 19.2 kg (solid), 15.3 kg (cellular/ hollow).

440 x 190 x 215 mm

Solid and hollow only. Unit weight: 28.2 kg (solid), 19 kg (hollow).

440 x 215 x 215 mm

Solid and hollow only. Unit weight: 31.9 kg (solid), 20.8 kg (hollow).

Compressive strength options

3.6 N/mm²

7.3 N/mm²

10.4 N/mm²

Face grade

Fair-faced

For locations requiring a consistent colour and close textured block face.

Paint-grade

For locations where a consistent close textured face is required as a background for direct painting.

Standard

For locations where the surface will not be visible e.g. for plastering or use below ground.

Moisture movement

<0.7 mm/m

SpecificHeatCapacity

1000 J/kg/K

Sound reduction index

Varies dependent on width and application, consult manufacturer for details.

Fire resistance

Varies dependent on width and application, consult manufacturer for details.

Air tightness

Varies dependent on width and application, consult manufacturer for details.

Standard product features

Colour:

Medium grey.

Features:

Above and below ground use, Class A1 fire rating, high strength, good sound insulation.

Finish:

Fine textured. Available in fair faced, paint grade and standard grades.

Material:

Concrete.

Shape:

Rectangular block.

Size:

440 x 75–215 x 215 mm.

Recyclability:

100%.

Environmental information
Recyclability

100%

Recycled content

Up to 48%

Digital objects
PlatformCompatibleVersionCertified to
Revit
Revit 2016 4 2.0
IFC
IFC2X3 3 1.3
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