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Fibo 850 Concrete Blocks

Third party certifications:
  • BSI Kitemark

    Certificate type

Lignacite Ltd

General purpose, lightweight concrete blocks.

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

For use in housing or extension projects. It can also be used to construct walls in other buildings where there is a requirement to specify blockwork with a low weight, e.g. partition walls on floor slabs. Can be considered for use in the following locations:

  • Inner and outer leaves of external cavity walls.
  • 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).
  • Internal walls below ground, such as the inner leaf of external cavity walls and interior walls.

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

Description

General purpose, lightweight concrete blocks, suitable for walling applications.

The blocks are dark grey in colour with an opened textured surface. Available in 100 and 140 mm widths, solid form only.

Features and benefits:

  • Provides a high level of thermal insulation, reducing the amount of additional insulation required after installation.
  • Lightweight, easy to handle, and quick to lay.
  • Loadbearing.
  • Provides a high level of fire protection.
  • For use internally and externally, above and below ground.
  • Provides a strong background for direct application of plasters and renders (no bonding agents required).
  • The clay aggregate is bloated through heat expansion to create a low density, porous surface with numerous cavities.
  • Fixings will be held securely by the block (and can be nailed in directly).
  • 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:

For use in housing or extension projects. It can also be used to construct walls in other buildings where there is a requirement to specify blockwork with a low weight, e.g. partition walls on floor slabs. Can be considered for use in the following locations:

  • Inner and outer leaves of external cavity walls.
  • 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).
  • Internal walls below ground, such as the inner leaf of external cavity walls and interior walls.

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

General information
Color

Dark Grey

Features

High thermal insulation reducing the amount of added insulation required to comply with energy efficiency standards, lightweight, high level of fire protection

Finish

Open textured surface

Material

Aggregate concrete

Shape

Rectangular

Size

440 x 215 x 100 mm

440 x 215 x 140 mm

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

Fibo 850 Concrete Blocks

Standard

BSI Kitemark approved to BS EN 771-3

Block description

Lightweight, loadbearing unit for general purpose walling applications

Appearance

Open textured surface for applying plaster and render

Configuration

Group 1

CompressiveStrength -
Compressive strength (mean value)

3.6 N/mm²

Category

M4

ThermalConductivity

0.25 W/m·K at 3% moisture content (internal use), 0.28 W/m·K at 5% moisture content (external use)

Thermal resistance

At 3% moisture content: 100 mm width: 0.40 m²K/W, 140 mm width: 0.56 m²K/W. At 5% moisture content: 100 mm width: 0.35 m²K/W, 140 mm width: 0.50 m²K/W

Recycled content

Up to 22%

Tolerance category

D1

Density -
Net dry density

850 kg/m³

Reaction to fire

Class A1

Water vapour permeability

5/15 µ

Work sizes (length x width x height)

440 x 100 x 215 mm

Unit weight: 8.7 kg.

440 x 140 x 215 mm

Unit weight: 12.2 kg.

Moisture movement

<0.5 mm/m

SpecificHeatCapacity

1000 J/kg/K

Sound reduction index

At 100 mm width: 40–42 RW dB (dependent on application); at 140 mm width: 42–44 RW dB (dependent on application)

Fire resistance

100 mm: 2–3 hours; 140 mm: 3–4 hours

Standard product features

Colour:

Dark grey.

Features:

High thermal insulation, lightweight, Class A1 high level of fire protection.

Finish:

Open textured.

Material:

Concrete (expanded clay aggregates and other naturally occurring raw materials and cement).

Shape:

Rectangular block.

Size:

440 x 100/ 140 x 215 mm.

Recyclability:

100%.

Environmental information
Recyclability

100%

Recycled content

Up to 22%

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